100 results on '"Luftfahrzeug"'
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2. A380 – Ein Nachruf
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Dalgas, Tom, Erb, Leonard, Gnutzmann, Anton, Petersen, Marvin, and Scholz, Dieter
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population ,Aeronautics ,Flugplatz ,Mühlenberger Loch ,Neuenfelde ,Werkserweiterung ,state ,S-LCA ,Tragflügel ,Runways (Aeronautics) ,Life-Cycle Assessment ,Bevölkerung ,Startbahn ,Elbe ,LCA ,government ,Hamburg-Finkenwerder ,Arbeiter ,Regierung ,OEM ,manufacturer ,Airplanes ,protection ,Landebahn ,Anleger ,Enteignung ,investor ,Zulieferer ,Deich ,subcontractor ,Airports ,Luftfahrzeug ,Finkenwerder ,Airbus 380 ,Hersteller ,stakeholders ,Flugzeug ,Natur ,Naturschutz ,Hamburg ,Luftverkehrsgesellschaft ,Airbus ,Gesellschaft ,airline ,Luftfahrt ,nature ,Flugbetrieb ,Airports—Planning ,jet blast ,620: Ingenieurwissenschaften ,society ,UNEP ,Frachtflugzeug ,Conservation of natural resources ,expropriation ,wake vortex ,worker ,Wirbelschleppe ,HFB ,Staat - Abstract
Nur 14 Jahre nach der Erstauslieferung wird die Produktion des größten Passagierflugzeuges der Welt eingestellt. Mit der letzten Auslieferung am 16.12.2021 an Emirates hob der letzte neu produzierte A380 vom Airbus Werksgelände in Hamburg-Finkenwerder ab. Eine kurze Zusammenfassung über die geschichtliche Entwicklung des Projekts A380 und dessen Auswirkung auf die Stakeholder.
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- 2022
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3. Belüftungsvergleich Flugzeug vs. Bahn fällt recht ähnlich aus
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Haße, David and Scholz, Dieter
- Subjects
Luftfahrzeug ,Filter ,Viren ,Zug ,HEPA-Filter ,Luftfahrt ,Maske ,Kabine ,Belüftung ,Luftwechselrate ,620: Ingenieurwissenschaften ,Flugzeug ,Passagierflugzeug ,FFP2 ,Bahn - Abstract
In Flugzeugen wird die Maskenpflicht nicht wie ursprünglich geplant verschärft, sondern zum Oktober 2022 abgeschafft. In der Bahn soll sie bestehen bleiben. Die Argumente, die dazu geführt haben, sind wissenschaftlich nicht nachzuvollziehen.
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- 2022
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4. Konzeptstudie
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Krebs, Heinz-Adalbert and Hagenweiler, Patricia
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Ingenieurbau ,Zustandsüberwachung ,Luftfahrzeug ,Structural Health Monitoring ,Flugkörper ,Datenmanagement ,Brückeninspektion ,Brücke ,Drohne ,Inspektionsprozesse - Abstract
Gefördert durch Bundesministerium für Verkehr und digitale Infrastruktur im Rahmen des mFUND. Das Startkapital für die Mobilität 4.0
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- 2022
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5. Passenger Aircraft at End-of-Life
- Author
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Scholz, Dieter
- Subjects
Airbus ,Luftfahrzeug ,aerolectures ,composite materials ,Kohlenstofffaserverstärkter Kunststoff ,ComputerApplications_COMPUTERSINOTHERSYSTEMS ,Luftfahrt ,end-of-life ,Aeronautics ,Airplanes ,AFRA ,Material ,Flugzeug ,Boeing ,PAMELA ,repair ,Lebenszyklus ,aerolectures2022 ,Recycling ,product life cycle ,CFK ,CFRP ,Prof. Scholz @ Zenodo ,Reparatur - Abstract
Purpose – The presentation summarizes the state-of-the-art in aircraft end-of-life strategies. Methodology – A literature review is the basic research method utilized. A visit to a dismantling site complemented the findings. Journeys and the Internet show examples of special reuse approaches giving aircraft and components a second life. Findings – In the past aircraft went to "boneyards" at their end-of-live where they were simply left on their own. This should be avoided in the future. Instead aircraft are initially parked and stored. If no further operation is possible, aircraft are dismantled. Components and material is recycled as far as possible. The rest is disposed. Research has been done on the topic by Airbus, Boeing, other industrial companies, and academic institutions. The aircraft recycling industry starts to build up now by the launch of several recycling plants. The aircraft recycling market will slowly mature with associations like the Aircraft Fleet Recycling Association (AFRA) and with the publication of guidance material for best practices. The significant higher percentage of composites in modern aircraft types is a challenge for aircraft recycling. Special reuse approaches are only a niche market and not able to cope with the number of aircraft that need to be decommissioned each year. Value – The presentation gives a year 2022 overview on the state-of-the-art of aircraft end-of-life handling with many pictures., Hamburg Aerospace Lecture Series --- Collection of Presentations --- http://www.AeroLectures.de
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- 2022
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6. The 21st Century Renaissance of the Transonic Wind Tunnel
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Greenwell, Doug
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Luftfahrzeug ,aerolectures ,Windkanal ,wind tunnel ,Luftfahrt ,computational fluid dynamics ,Flugzeugaerodynamik ,transonic ,Flugzeug ,aeronautics ,aerolectures2022 ,airplanes ,CFD ,aerodynamics ,Luftwiderstand - Abstract
Received wisdom is that in this age of digital engineering, wind tunnels are in decline. The imminent demise of the wind tunnel has been eagerly anticipated for over 50 years now ... and yet they have stubbornly refused to die. Indeed, the last 10 years have seen high-speed wind tunnels stage a remarkable comeback; new tunnels are being built, existing tunnels are being upgraded, and mothballed tunnels are being reactivated. This presentation has a focus on industrial-scale transonic wind tunnels, reviews the historical development of these facilities and then looks at their current and near-future status., Hamburg Aerospace Lecture Series --- Collection of Presentations --- http://www.AeroLectures.de
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- 2022
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7. Drones, Augmented Reality and Virtual Reality Journalism: Mapping Their Role in Immersive News Content
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Pavlik, John V.
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Medienökonomie, Medientechnik ,Luftfahrzeug ,Computer science ,Journalism ,050801 communication & media studies ,Volumetric ,virtuelle Realität ,journalism ,02 engineering and technology ,Virtual reality ,computer.software_genre ,ddc:070 ,lcsh:Communication. Mass media ,0508 media and communications ,Communicator Research, Journalism ,audiovisual media ,Journalismus ,audiovisuelle Medien ,0202 electrical engineering, electronic engineering, information engineering ,news ,Drones ,News media, journalism, publishing ,augmented reality ,drones ,photogrammetry ,volumetric ,Nachrichten ,media technology ,Augmented Reality ,Multimedia ,Video capture ,Communication ,05 social sciences ,Perspective (graphical) ,Virtual Reality ,Kommunikatorforschung, Journalismus ,lcsh:P87-96 ,Drone ,Medientechnik ,Visual flight ,neue Technologie ,Aerial perspective ,Photogrammetry ,new technology ,virtual reality ,020201 artificial intelligence & image processing ,Augmented reality ,Publizistische Medien, Journalismus,Verlagswesen ,Media Economics, Media Technology ,aircraft ,computer - Abstract
Drones are shaping journalism in a variety of ways including in the production of immersive news content. This article identifies, describes and analyzes, or maps out, four areas in which drones are impacting immersive news content. These include: 1) enabling the possibility of providing aerial perspective for first-person perspective flight-based immersive journalism experiences; 2) providing geo-tagged audio and video for flight-based immersive news content; 3) providing the capacity for both volumetric and 360 video capture; and 4) generating novel content types or content based on data acquired from a broad range of sensors beyond the standard visible light captured via video cameras; these may be a central generator of unique experiential media content beyond visual flight-based news content.
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- 2020
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8. Drone Journalism as Visual Aggregation: Toward a Critical History
- Author
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James Hamilton
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Warrant ,History ,Medienökonomie, Medientechnik ,Luftfahrzeug ,Analogy ,050801 communication & media studies ,journalism ,Space (commercial competition) ,ddc:070 ,lcsh:Communication. Mass media ,0508 media and communications ,drones ,Communicator Research, Journalism ,Journalismus ,Fotografie ,0601 history and archaeology ,visual culture ,news agency ,Visual culture ,News media, journalism, publishing ,media technology ,060101 anthropology ,Communication ,05 social sciences ,Media studies ,aerial view ,unmanned aerial vehicles ,visual aggregation ,06 humanities and the arts ,Kommunikatorforschung, Journalismus ,Drone ,photography ,lcsh:P87-96 ,Medientechnik ,Antecedent (grammar) ,Journalism ,Publizistische Medien, Journalismus,Verlagswesen ,Media Economics, Media Technology ,Nachrichtenagentur ,aircraft ,Data journalism - Abstract
The use of unmanned aerial vehicles (UAVs—commonly referred to as drones) in journalism has emerged only recently, and has grown significantly. This article explores what makes drone imagery as an instance of what scholars of visual culture call an aerial view so compelling for major news organizations as to warrant such attention and investment. To do this, the concept ‘visual aggregation’ is introduced to theorize the authority of drone imagery in conventional journalistic practice. Imagery produced through drone journalism is a visual analogy to statistical summary and, more recently, of what is referred to as data journalism. Just as these combine an aggregate of cases to produce an understanding of an overall trend, drone imagery aggregates space visually, its broad visual field revealing large-scale spatial patterns in ways analogous to the statistical capture/analysis of large bodies of data. The article then employs a cultural and historical approach to identify key points in the emergence of visual aggregation as authoritative truth. The aerial view as a claim to truth is manifest in a wide range of antecedent social formations, devices and practices prior to their amalgamation in what has today become drone journalism. This analysis aids understanding of how drone journalism is a response to the institutional crises of journalism today.
- Published
- 2020
9. Technische Informationen und Hintergründe zur Start- und Landebahnverlängerung in Hamburg-Finkenwerder für den Airbus A380
- Author
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Bürgervertretung Neuenfelde – Francop – Cranz Von 1976
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Gefahrenabwehr ,Airports ,Luftfahrzeug ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau ,Flugmechanik ,Aeronautics ,Flugplatz ,ddc:629,1 ,Airbus 380 ,Anflugwinkel ,Werkserweiterung ,Flugwissenschaft ,Runways (Aeronautics) ,Hamburg ,Airports--Planning ,Flugleistung ,Startbahn ,Airbus ,Hindernisfreifläche ,Hindernisfreiflächen ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::629,1 | Luft- und Raumfahrttechnik ,Luftfahrt ,Hamburg-Finkenwerder ,Flugbetrieb ,Airplanes ,Dewey Decimal Classification::600 | Technik ,jet blast ,Landebahn ,Passagierflugzeug ,Frachtflugzeug ,ddc:620 ,ddc:600 ,Risikoanalyse ,Wirbelschleppe - Abstract
Zweck – Es ging in den Jahren 2002 bis 2006 darum, zu beantworten, ob eine erneute Verlängerung der Start- und Landebahn in Hamburg-Finkenwerder über die vorhandene Bahnlänge von 2684 m hinaus für den Airbus A380 Frachter notwendig war. Überprüfung der von Airbus in Auftrag gegebenen Gutachten. Information der Entscheidungsträger. Beteiligung am Planfeststellungsverfahren. Methodik – Recherche der von Airbus veröffentlichten Angaben und Vergleich mit den Erkenntnissen aus dem Flugbetrieb und den Flugwissenschaften. Ergebnisse – Eine Verlängerung der Start- und Landebahn ist nicht notwendig. Grenzen der Anwendbarkeit – Es wurden keine eigenen Berechnungen der Start- und Landestrecken durchgeführt, weil Diagramme dafür von Airbus im Internet veröffentlicht waren und genutzt werden konnten. Bedeutung in der Praxis – Information der Betroffenen im Dorf Neuenfelde. Soziale Bedeutung – Allgemeine Information über die Presse mit dem Ziel der Versachlichung der Diskussion. Originalität – Es gab außer dieser unabhängigen Aufklärungsarbeit keine andere Information, die auch nur annähernd vergleichbar detailliert und fachlich fundiert war., Internetseite zum Bericht: https://purl.org/bv-nfc
- Published
- 2022
10. A method for determining the central lateral position of a spray swath.
- Author
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Herbst, Andreas and Bonds, Jane A. S.
- Subjects
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SWATH ships , *CENTER of mass , *CROSSWINDS - Abstract
An aerial swath offset experiment was conducted to measure the accuracy of two commercial navigational systems for compensation of cross wind influence. The swaths produced in this experiment presented many different deposit patterns. A method was required to determine a position for the differing distributions on the ground. This paper describes a possible solution of this problem. Equivalent to the centre of gravity in mechanics, the use of a Centre of Deposition calculation proved appropriate. The way of calculation is exemplified. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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11. Umweltschutz in der Luftfahrt - Hintergründe und Argumente zur aktuellen Diskussion
- Author
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Scholz, Dieter and Scholz, Dieter
- Abstract
Zweck: Dieser Bericht mit Hintergründen zum Umweltschutz in der Luftfahrt ist ein Erklärtext. Er richtet sich an interessierte Laien, die bereit sind, sich in Sachverhalte einzuarbeiten jenseits grober Vereinfachungen. Der Text soll ein unabhängiges eigenes Verständnis ermöglichen. --- Methodik: Der Text basiert auf einem Literaturstudium, sowie auf eigenen Berechnungen. --- Ergebnis: Die Emissionen der Zivilluftfahrt sind seit den Anfängen der Fliegerei bisher exponentiell gewachsen mit einer Verdoppelung alle 20 Jahre. Der Anteil der Zivilluftfahrt an den Emissionen des Verkehrssektors beträgt 13,9 % in der EU. Der Anteil steigt. 1 % der Weltbevölkerung verursacht 50 % der CO2-Emissionen der Zivilluftfahrt. Die Verteilung ist daher extrem ungleich. Kraftstoffverbrauch und CO2-Emissionen sind gekoppelt. Aus der Masse von einem kg Kerosin werden 3,15 kg CO2, aber das Klimadesaster kommt vor dem Ende der fossilen Energien. "Zero Emission" wird durch die Luftverkehrswirtschaft propagiert, scheint aber nur ein Ablenkungsmanöver zu sein. Die EU wird konkret: Ende der kostenlosen Emissionszertifikate für die Luftfahrt, Steuern auf Kerosin und Beimischung nachhaltige Flugkraftstoffe. Aktuell werden zwei Vorschläge für neue Energieträger in der Luftfahrt diskutiert: flüssiger Wasserstoff (LH2) und synthetisches Kerosin (E-Fuel). Aufgrund der Nicht-CO2-Effekte bleibt die Klimawirkung. Durch Umwandlungsverluste wird erheblich mehr Ausgangsenergie benötigt. E-Fuels funktionieren nur zusammen mit der Abscheidung von CO2 aus der Luft. Die Nutzung der regenerativen Energie zur Substitution von Kohlekraftwerken vermeidet 15-mal mehr CO2 als bei der Nutzung im Flugzeug. Der Kraftstoffverbrauch pro Sitzplatz steigt stark an, wenn sehr kurze oder für das Flugzeug sehr lange Strecken geflogen werden. Die Nicht-CO2-Effekte durch Stickoxide und Kondensstreifen (mit Zirrenbildung) verursachen eine Klimawirkung der Luftfahrt etwa dreimal so groß, wie durch das CO2 allein. Die Nicht-CO2-E
- Published
- 2021
12. Die Diederich-Methode zur Berechnung der Auftriebsverteilung am Tragflügel in Microsoft Excel
- Author
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Schnoor, Max
- Subjects
Design ,Lift ,Auftrieb ,Luftfahrzeug ,Machzahl ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau ,ISA ,Aeronautics ,Distribution ,Wing ,Reynoldszahl ,Flugzeug ,Aerodynamics ,Tragflügel ,Triebwerk ,Pfeilung ,Zuspitzung ,Rumpf ,Stall ,Strömung ,Atmosphere ,Flugzeugentwurf ,Luftfahrt ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::629,1 | Luft- und Raumfahrttechnik ,Airplanes ,Mason ,Dewey Decimal Classification::600 | Technik ,Diederich ,Profil ,Airplanes--Wings ,Subsonic ,Taper ,Aerodynamik - Abstract
Ziel der Arbeit ist es, die Diederich-Methode zur Berechnung der Auftriebsverteilung eines Tragflügels im Tabellenkalkulationsprogramm Microsoft Excel basierend auf didaktischen Überlegungen zur Verfügung zu stellen. Die Diederich-Methode wird basierend auf Primär- und Sekundärliteratur beschrieben. Diagramme werden digitalisiert, damit die Methode automatisch ablaufen kann. Zur Optimierung der Auftriebsverteilung des Flügels werden die elliptische und die dreieckige Auftriebsverteilung sowie die Auftriebsverteilung nach Mason zum Vergleich angeboten. Es wird eine Methode zur Berechnung des maximalen Auftriebsbeiwertes des Flügels in die Diederich-Methode integriert. Dazu müssen die maximalen Auftriebsbeiwerte der Profile an der Flügelwurzel und an der Flügelspitze in das Programm eingegeben werden. Die Berechnung setzt einen Trapezflügel voraus. Sowohl Flügelpfeilung als auch eine lineare Flügelverwindung können berücksichtigt werden. Die Streckung darf keine zu kleinen Werte annehmen. Es wird subsonische Strömung vorausgesetzt und eine Strömung ohne Ablösung. Da nur der Flügel beschrieben wird, bleiben alle weiteren Einflüsse wie beispielsweise vom Rumpf oder von den Triebwerken unberücksichtigt. Die Excel-Arbeitmappe wurde für die Lehre im Flugzeugvorentwurf erstellt. Derzeit wird die Diederich-Methode offenbar nirgends als Tabellenkalkulation angeboten. Mit dieser Arbeit kann diese Lücke geschlossen werden., Aim of this project is to provide the Diederich Method for calculating the lift distribution of a wing in a Microsoft Excel spreadsheet based on didactic considerations. The Diederich Method is described based on primary and secondary literature. Diagrams are digitized so that the method can run automatically. To optimize the lift distribution of the wing, the elliptical and triangular lift distribution as well as Mason's lift distribution are offered for comparison. A method for calculating the maximum lift coefficient of the wing is integrated into the Diederich Method. To do this, the maximum lift coefficients of the airfoils at the wing root and at the wing tip must be entered in the program. The calculation assumes a trapezoidal wing. Both wing sweep and linear wing twist can be taken into account. The aspect ratio must not assume values that are too small. Subsonic flow and unseparated flow are assumed. Since only the wing is described, all other influences such as from the fuselage or from the engines are not taken into account. The Excel workbook was created for teaching in aircraft preliminary design. At the moment, the Diederich Method is apparently nowhere offered as a spreadsheet. With this work, this gap can be closed.
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- 2021
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13. The Cubic Wing Loading Parameter in Passenger Aircraft Preliminary Sizing
- Author
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Láinez Muñiz, Alfonso
- Subjects
Luftfahrzeug ,design ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau ,Flugzeugentwurf ,Luftfahrt ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::629,1 | Luft- und Raumfahrttechnik ,Aeronautics ,CWL ,Airplanes ,Dewey Decimal Classification::600 | Technik ,loading ,Flugzeug ,Aerodynamics ,Airplanes--Wings ,Aerospace engineering ,Passagierflugzeug ,Flugzeugbau ,cubic ,aircraft ,wing ,Flächenbelastung ,aircraft design - Abstract
Purpose – This thesis investigates the parameter Cubic Wing Loading (CWL). It is the mass of the aircraft divided by the wing surface area taken to the power of 3/2. As such the unit of the denominator is converted from m² to m³ and CWL has the unit of kg/m³. Classical Wing Loading (WL) is aircraft mass divided by wing area. It is investigated, if CWL (unlike WL) is independent of aircraft size, if it has advantages in preliminary aircraft design, and if it can be used as a basis for interesting correlations. --- Methodology – Aircraft preliminary sizing equations for passenger jet aircraft are rewritten to replace WL with CWL. Aircraft statistical data are investigated with respect to CWL. --- Findings – It is known that WL increases with aircraft size. Unfortunately, also CWL depends on aircraft size. However, CWL decreases with aircraft size. CWL introduced to preliminary sizing leads to additional (but manageable) iterations compared to preliminary sizing based on WL. Correlations with other aircraft design parameters are weak and no relation with accident rates for high CWL aircraft is found. --- Research Limitations – 209 airplanes are studied for initial statistical correlations. Some correlations were limited to 72 airplanes due to lack of detailed data. --- Practical Implications – There are no advantages to replace WL by CWL in passenger aircraft preliminary sizing. --- Originality – This seems to be the first report to fully investigate CWL with respect to passenger aircraft and to offer a related user-friendly preliminary sizing spreadsheet.
- Published
- 2021
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14. Pilot Measures against Cabin Air Contamination
- Author
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Stichternath, Lukas
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cabin air ,Air pilots ,emergency ,Luftfahrzeug ,event ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau ,Luftfahrt ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::629,1 | Luft- und Raumfahrttechnik ,Detectors ,Aeronautics ,Flugzeugkabine ,Airplanes ,Checklists ,Dewey Decimal Classification::600 | Technik ,fume ,contamination ,Air conditioning ,Passagierflugzeug ,Luftverschmutzung ,Smoke ,Aircraft cabins ,CACE ,Air--Pollution - Abstract
Purpose – This thesis tries to improve the situation of pilots in a Cabin Air Contamination Event (CACE) by increasing awareness through added information. Pilot activities in a CACE center around getting information about the level of contamination, applying checklists, and troubleshooting procedures, and if necessary, descending to 10000 ft. --- Methodology – Starting from the results of previous work at HAW Hamburg information available on the Internet was reviewed. Information from manuals available to pilots was added from own sources or also discovered on the Internet. --- Findings – Sensors are necessary to help pilots to identify a CACE. Handheld sensors can be used without any delay today. Fixed sensors placed at various positions in the air conditioning system yield earlier warning and allow better trouble shooting. Suitable markers like formaldehyde have been identified. Suitable sensors are available. An electrical nose can recognize a pattern of substances and can distinguish e.g. engine oil from hydraulic fluid contamination. Although checklists dedicated to CACEs could guide pilots much better, if circumstances and the known smell already indicate a bleed air related problem, few airlines seem to use dedicated CACE related checklists. If a fire on board can be ruled out, descending to 10000 ft for direct cabin ventilation and cruise to the next alternate can prevent damage to passenger and crew health from otherwise continued flight at altitude with contaminated cabin air. --- Research limitations – The investigation is based on a limited number of emergency checklists. Information is limited about sensors of marker substances for cabin air contamination. --- Practical implications – Knowledge about CACEs can help pilots to make a better suited informed decision rather than following a smoke checklist blindly. Pilots are given hints what type of sensors to buy. A suitable sensor adds further to making an informed decision in a CACE. --- Originality – This seems to be the first scientific discussion of pilot measures in a CACE.
- Published
- 2021
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15. Software Testing: VSPAERO
- Author
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Mariën, Floris
- Subjects
Wirbelgitterverfahren ,Aircraft ,Luftfahrzeug ,Tabellenkalkulation ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau ,VLM ,Aeronautics ,Computational fluid dynamics ,Box Wing ,induced ,Flugzeug ,Aerodynamics ,Numerische Strömungssimulation ,Panelverfahren ,Luftfahrt ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::629,1 | Luft- und Raumfahrttechnik ,Airplanes ,Flugzeugaerodynamik ,Dewey Decimal Classification::600 | Technik ,Drag ,factor ,Electronic spreadsheets ,CFD ,Drag (Aerodynamics) ,Oswald ,Flow visualization ,Luftwiderstand - Abstract
Purpose – Test the aerodynamic analysis code VSPAERO, which is part of OpenVSP from NASA. Apply VSPAERO to calculate the lift curve slope and the span efficiency factor of straight wings (for various aspect and taper ratios) as well as the induced drag of box wings (for various h/b-ratios) relative to their reference wing. --- Methodology – VSPAERO results are compared with results from analytical equations, wind tunnel measurements, and results produced with other aerodynamic codes. --- Findings – VSPAERO offers correct and reliable results, if the simulation is set up with care. The user must always keep an eye on model discretization and refinement, flow conditions, and number of iterations. The Vortex Lattice Method (VLM) and the panel method are best used for different purposes. The VLM shows shorter simulation time and produces reliable results. The panel method is more complicated to use. Numerical results are also good. In addition, the panel method can be used better to visualize flow phenomena. Hoerner's simple approach to induced drag estimation can be used to approximate results of the VLM and the panel method, if a simple correction factor is applied. --- Research Limitations – Most of the tests of VSPAERO have been done with a simple wing geometry, as such much simpler than a full aircraft geometry. --- Practical Implications – VSPAERO can be used with relative ease. It can also be used to show flow phenomena on full aircraft geometry. --- Originality – Repeating simple calculations done many times before does not sound original, but doing this with the relatively new software VSPAERO offering the VLM as well as the panel method seems to be original after all.
- Published
- 2021
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16. Flugversuche beim DLR mit EC 135, Bo 105, Do 228, VFW 614 und A320 – Erfahrungen eines Projekt- und Entwicklungsingenieurs
- Author
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Antrack, Florian
- Subjects
Airbus ,EASA ,Flugversuchsinstallation ,Entwicklungsbetrieb ,Luftfahrzeug ,DLR ,aerolectures ,Flugversuch ,Zulassung ,Luftfahrt ,Hubschrauber ,A320 ,Flächenflugzeug ,Versuchseinbauten ,Flugzeug ,aerolectures2020 ,Passagierflugzeug ,Entwicklung ,VFW ,Dornier ,ATRA ,Konfiguration - Abstract
Der Vortrag stellt den Flugversuch in den heutigen Kontext der Luftfahrt mit seinen Verknüpfungen zur Zulassung und Entwicklung des Luftfahrzeuges. Welche Anforderungen gibt es? Welche Vorgaben der EASA müssen beachtet werden. Was ist ein Entwicklungsbetrieb? Anhand von Beispielen aus der täglichen Arbeit wird die praktische Umsetzung der Flugversuche dargestellt. Zusammen mit den beteiligten Wissenschaftlern bereitet der Projekt- und Entwicklungsingenieur die Flugversuche vor und übernimmt die Verantwortung für die strukturelle Implementierung der Flugversuchsinstallationen. Für einen sicheren Betrieb des Versuchsträgers bei sich ständig ändernden Versuchseinbauten ist die Konfigurationsdefinition und Konfigurationskontrolle unerlässlich. Das DLR betreibt sowohl Hubschrauber als auch Flächenflugzeuge. Dabei geht/ging es von der für 19 Passagiere ausgelegten Dornier Do 228 über die VFW 614 bis zum Airbus A320-200 als Advanced Technology Research Aircraft (ATRA)., Hamburg Aerospace Lecture Series --- Collection of Presentations --- http://www.AeroLectures.de
- Published
- 2020
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17. Journalism from Above: Drones and the Media in Critical Perspective
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Harvard, Jonas, Hyvönen, Mats, Wadbring, Ingela, Harvard, Jonas, Hyvönen, Mats, and Wadbring, Ingela
- Abstract
In the last decade, the development of small, remotely operated multicopters with cameras, so-called drones, has made aerial photography easily available. Consumers and institutions now use drones in a variety of ways, both for personal entertainment and professionally. The application of drones in media production and journalism is of particular interest, as it provides insight into the complex interplay between technology, the economic and legal constraints of the media market, professional cultures and audience preferences. The thematic issue Journalism from Above: Drones, the Media, and the Transformation of Journalistic Practice presents new research concerning the role of drones in journalism and media production. The issue brings together scholars representing a variety of approaches and perspectives. A broad selection of empirical cases from Finland, Spain, Sweden, the UK and the US form the basis of an exploration of the changing relations between the media, technology and society. The articles address topics such as: Adaption of drone technology in the news-rooms; audience preferences and reactions in a changing media landscape; the relation between journalists and public authorities who use drones; and attitudes from journalistic practitioners as well as historical and future perspectives.
- Published
- 2020
18. Diffusion of Drone Journalism: the Case of Finland, 2011-2020
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Uskali, Turo, Manninen, Ville, Ikonen, Pasi, Hokkanen, Jere, Uskali, Turo, Manninen, Ville, Ikonen, Pasi, and Hokkanen, Jere
- Abstract
This article details Finnish news organizations’ adoption of drones for journalistic purposes from 2011 to 2020. The theoretical starting point of the article is Rogers’ (1962) diffusion of innovations theory, which explains how new ideas and technologies spread in societies. The main empirical data for the study were derived from a phone survey conducted among the 80 most popular newspapers in Finland. The findings reveal that drone journalism in Finland has already diffused from a few pioneering organizations to a large number of newsrooms, including regional, mid-sized newspapers. Most of the newspapers are either using in-house drones, buying commissioned images, or using both strategies. The frequency of use was found to be much higher for those newsrooms using their own drones. Finally, the article ponders possible explanations for different trajectories in the adoption of drones in various countries based on the Finnish case
- Published
- 2020
19. Technologies, Ethics and Journalism's Relationship with the Public
- Author
-
Duncan, Megan, Bartzen Culver, Kathleen, Duncan, Megan, and Bartzen Culver, Kathleen
- Abstract
Drones can provide a bird’s eye view of breaking news and events that can be streamed live or used in edited news coverage. Past research has focused on the training and ethics of journalists and drone operators. Little attention, however, has been given to audiences and their acceptance and perception of ethics. We suggest that audiences who are open to personal technology use will perceive news media using unmanned aerial vehicles (UAVs) as more ethical in an extension of the Diffusion of Innovation Theory. In a survey (N = 548) of adults living in the United States, we explore the correlates between trust, technology, privacy, and the use of UAVs. Results suggest all three are positively correlated with openness toward drone journalism. We find the audience has preferences for the types of news stories that should be covered using drones. Participants indicated they welcome drone journalism when covering traffic and investigative stories, but not celebrities and politicians. The findings have implications for newsrooms, suggesting transparency and outreach to educate people on the technology could help build trust. Further, the results suggest that Diffusion of Innovation theory can be applied when mediated through news media.
- Published
- 2020
20. Post-Hype Uses of Drones in News Reporting: Revealing the Site and Presenting Scope
- Author
-
Harvard, Jonas and Harvard, Jonas
- Abstract
Camera-equipped drones have emerged as an increasingly commonplace tool for media to acquire aerial imagery. Previous research has mainly focused on the innovative aspects and creative potential of the technology. This article argues that early optimistic projections reflected a novelty effect, typical of a culturally embedded idea that new and better technologies continuously replace older ones. Using a historical theory which distinguishes techno-optimistic innovation discourse from actual observations of technology in use, photojournalists were interviewed on the role of drones in news reporting. The results show that the practitioners historicise drones, relating them to previous aerial technologies, and they reflect on current and future uses of drones in journalism based on a notion of phases, where early hype gives way to subsequent drone fatigue. Drones are seen by many as a more convenient tool to do things that journalism has done before, but the convenience increases the use of aerial imagery. The results also show that, although photojournalists see a wide range of potential uses, there are also limitations, including the ideals of the invisible observer, safety concerns, and the perils of over-aesthetic imagery. The post-hype uses of drone photography were summarized in two categories: (a) revealing the site, establishing ‘this happened here’ and (b) presenting scope, or showing how vast or large something is.
- Published
- 2020
21. Drone Journalism as Visual Aggregation: Toward a Critical History
- Author
-
Hamilton, James F. and Hamilton, James F.
- Abstract
The use of unmanned aerial vehicles (UAVs - commonly referred to as drones) in journalism has emerged only recently, and has grown significantly. This article explores what makes drone imagery as an instance of what scholars of visual culture call an aerial view so compelling for major news organizations as to warrant such attention and investment. To do this, the concept 'visual aggregation' is introduced to theorize the authority of drone imagery in conventional journalistic practice. Imagery produced through drone journalism is a visual analogy to statistical summary and, more recently, of what is referred to as data journalism. Just as these combine an aggregate of cases to produce an understanding of an overall trend, drone imagery aggregates space visually, its broad visual field revealing large-scale spatial patterns in ways analogous to the statistical capture/analysis of large bodies of data. The article then employs a cultural and historical approach to identify key points in the emergence of visual aggregation as authoritative truth. The aerial view as a claim to truth is manifest in a wide range of antecedent social formations, devices and practices prior to their amalgamation in what has today become drone journalism. This analysis aids understanding of how drone journalism is a response to the institutional crises of journalism today.
- Published
- 2020
22. Relationships between Law Enforcement Authorities and Drone Journalists in Spain
- Author
-
Gallardo-Camacho, Jorge, Rodríguez Breijo, Vanessa, Gallardo-Camacho, Jorge, and Rodríguez Breijo, Vanessa
- Abstract
The article analyzes the relationship between law enforcement authorities and drone journalists, professionals who use unmanned aerial vehicles (UAVs) for newsgathering purposes, in Spain. The study has two specific objectives. First, to identify the criteria that law enforcement authorities have set for the public dissemination in traditional and social media of the drone footage they have obtained as part of their police operations, and to characterize the relationship that exists between law enforcement authorities and drone journalists. The study is guided by three hypotheses: Spanish law enforcement authorities have more capacity than journalists to shoot aerial news footage (H1); for Spanish law enforcement authorities, the informational use that can be made of the drone footage they obtain is of secondary importance (H2); and drone journalists feel their work is heavily restricted by law enforcement authorities (H3). These hypotheses are tested with the use of in-depth interviews with representatives of three law enforcement organizations in Spain and five drone pilots who have collaborated with news media outlets. The study concludes that the current regulatory framework for UAVs in Spain is very restrictive, in comparison to other countries, which prevents the development of drone journalism.
- Published
- 2020
23. Audience Attention and Emotion in News Filmed with Drones: a Neuromarketing Research
- Author
-
Mañas-Viniegra, Luis, García-García, Alberto, Martín-Moraleda, Ignacio J., Mañas-Viniegra, Luis, García-García, Alberto, and Martín-Moraleda, Ignacio J.
- Abstract
Emotional journalism is being driven by audiovisual technology such as drones, also known as unmanned aerial vehicles, which have demonstrated their usefulness in transforming objective news into news stories from a new visual perspective, facilitating access to dangerous or difficult places. They also allow for greater immersion by an audience that has become an active participant in the news, and they contribute to the storytelling of communication despite the risk to privacy and security that their misuse might entail. The aim of this research is to determine the differences in attention and intensity of the emotions experienced when viewing two pieces of audiovisual news: One was filmed with the technological support of a drone, and the other was produced in the conventional way. The techniques of eye tracking and galvanic skin response were used in 30 Spanish university students. The results suggest that attention was focused on the most spectacular visual elements, although the images filmed with a drone received a higher concentration of attention from the subjects, and this attention was spread throughout the entire image, which demonstrates that drones enhance the effectiveness of panoramic images with natural landscapes. The greatest emotion generated by viewing the images recorded with drones was statistically significant, but it was limited exclusively to these particular scenes, and not to the entire recording of the news.
- Published
- 2020
24. Dual Control: Investigating the Role of Drone (UAV) Operators in TV and Online Journalism
- Author
-
Adams, Catherine and Adams, Catherine
- Abstract
At a time when TV and online journalism embraces more moving images filmed from drones than ever before, this article seeks to explore the thoughts and actions of those who produce them. It builds on earlier research into how aerial images impact on the viewer through the lens of ‘quality journalism’ (Adams, 2018). It investigates how drone operators are involved in the journalistic process, what meanings and effects they seek and who controls their work in a market-driven environment. Qualitative analysis was carried out of seventeen in-depth interviews with drone operators, journalists and editors working in UK and around the world. Data revealed a high degree of creative freedom among the operators, a passion for using drones and some desire to immerse and impress the viewer. It showed that aerial images have become paramount in video journalism amid market pressures to find ever more sophisticated and ‘cinematic’ shots. Interviewees felt drones had been “good for journalism,” by providing raw data, exciting new perspectives, context and story-telling techniques and “space to think.” The article explores the significant yet often unplanned contribution to the journalistic process of the drone operator and recommends more is done to increase understanding between journalist and pilot, such as providing training courses designed to teach quality drone journalism, as the media approaches ‘peak drone.’
- Published
- 2020
25. A Stunt, A Shut-Down, and Heavy Diplomatic Propaganda: The Story of Curtiss-Wright Corporation's Penetration to the Turkish Market
- Author
-
Iplikci, Murat and Iplikci, Murat
- Abstract
This article analyzes Curtiss-Wright Aerospace Industry’s inflow process to the Turkish market in the early 1930s. In these years, aviation was a quite significant industry that contributed economic, military, and political prestige of the states. Progressive decision-makers of Turkey were looking for an opportunity to establish a partnership with a multinational company to manufacture its own aircraft because the young state was destitute of such technology. Curtiss-Wright was eager to do business in Turkey; two American pilots’ record-breaking flight from New York to Istanbul in 1931; withdraw of German Junkers Aerospace Industry’s from Turkey in 1929 and American Ambassador Joseph Grew’s public diplomacy between 1927 to 1932, helped this process.
- Published
- 2020
26. Environmental Information for Aviation Passengers
- Author
-
Ridao Velasco, Alejandro
- Subjects
EASA ,Luftfahrzeug ,Passenger ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau ,Aeronautics ,Surveys ,Klimaänderung ,Greenhouse effect ,wastwater ,Umwelt ,taxes ,restrictions ,Luftverkehrsgesellschaft ,Treibhauseffekt ,ICAO ,CORSIA ,Pandemie ,Global warming ,greenwashing ,Luftfahrt ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::629,1 | Luft- und Raumfahrttechnik ,Airplanes ,Dewey Decimal Classification::600 | Technik ,Luftverschmutzung ,Climate Changes ,Abgasemission ,Air--Pollution ,IATA ,Reise - Abstract
Purpose - Review of tools that inform passengers about the environmental impact of their flight. Review of tools that allow passengers to compare flying with other means of transportation. Improve already existing tools and develop new ways to determine the environmental impact of passenger transport. --- Methodology - Continue work previously done on the ecolabel for aircraft. Study how the scientific community, governmental institutions, passengers, and the general public think about the environmental impact of aviation. Perform a survey that shows how airlines are perceived with respect to their environmental action and how environmental information should be presented to passengers. --- Findings - The majority of people are willing to make changes in their travelling behavior in order to make it more environmentally friendly. Taxes or even restrictions would be accepted if fairness and transparency were felt. Passengers would like to be informed with an ecolabel for aircraft. Offsetting carbon emissions would be accepted, if the scheme is explained in detail. The bad reputation of airlines after years of not taking any measures for reducing their absolute environmental impact has made people skeptical about any airline initiative. In the corona pandemic it became apparent that airline associations were never in favor of reducing the number of flights. --- Practical Implications - Methods for airline passenger to compare their travel emissions are proposed. --- Social Implications - If passengers are able to compare travel options in terms of environmental impact, it will open up a new type of competition among airlines. --- Originality - It is the first time that tools are collected and compared to allow airline passengers making an educated choice about their way of travelling regarding its environmental impact.
- Published
- 2020
- Full Text
- View/download PDF
27. Diffusion of Drone Journalism: the Case of Finland, 2011-2020
- Author
-
Jere Hokkanen, Ville Manninen, Turo Uskali, and Pasi Ikonen
- Subjects
Aviation ,communications ,visual journalism ,ddc:070 ,Finland ,aviation ,drone journalism ,news organizations ,Newspaper ,lcsh:Communication. Mass media ,0508 media and communications ,dronet ,ilmakuvat ,Phone ,050602 political science & public administration ,drone-journalismi ,media technology ,Point (typography) ,Communication ,05 social sciences ,ilmakuvaus ,visuaalinen viestintä ,uutiskuvat ,Kommunikatorforschung, Journalismus ,lcsh:P87-96 ,0506 political science ,neue Technologie ,new technology ,Nachrichtenwesen ,Media Economics, Media Technology ,aircraft ,Diffusion (acoustics) ,Medienökonomie, Medientechnik ,Luftfahrzeug ,Frequency of use ,050801 communication & media studies ,journalism ,newspapers ,Communicator Research, Journalism ,Political science ,Journalismus ,Zeitung ,uutistoimistot ,News media, journalism, publishing ,business.industry ,Media studies ,Drone ,Medientechnik ,Finnland ,finland ,journalismi ,Journalism ,sanomalehdet ,Publizistische Medien, Journalismus,Verlagswesen ,business ,newspaper - Abstract
This article details Finnish news organizations’ adoption of drones for journalistic purposes from 2011 to 2020. The theoretical starting point of the article is Rogers’ (1962) diffusion of innovations theory, which explains how new ideas and technologies spread in societies. The main empirical data for the study were derived from a phone survey conducted among the 80 most popular newspapers in Finland. The findings reveal that drone journalism in Finland has already diffused from a few pioneering organizations to a large number of newsrooms, including regional, mid-sized newspapers. Most of the newspapers are either using in-house drones, buying commissioned images, or using both strategies. The frequency of use was found to be much higher for those newsrooms using their own drones. Finally, the article ponders possible explanations for different trajectories in the adoption of drones in various countries based on the Finnish case
- Published
- 2020
28. Post-Hype Uses of Drones in News Reporting : Revealing the Site and Presenting Scope
- Author
-
Jonas Harvard
- Subjects
history of engineering ,Medienökonomie, Medientechnik ,Luftfahrzeug ,drone journalism ,drone use ,drones ,photojournalism ,unmanned aerial vehicles ,050801 communication & media studies ,journalism ,050905 science studies ,ddc:070 ,lcsh:Communication. Mass media ,0508 media and communications ,Communicator Research, Journalism ,Medie- och kommunikationsvetenskap ,Journalismus ,Fotografie ,Sociology ,News media, journalism, publishing ,Berichterstattung ,Technikgeschichte ,media technology ,reporting ,Communication ,05 social sciences ,Photography ,History of technology ,Novelty ,Media studies ,Kommunikatorforschung, Journalismus ,Media and Communications ,Drone ,history of technology ,lcsh:P87-96 ,photography ,innovation ,Aerial imagery ,Medientechnik ,neue Technologie ,Photojournalism ,new technology ,Journalism ,Publizistische Medien, Journalismus,Verlagswesen ,0509 other social sciences ,Media Economics, Media Technology ,aircraft - Abstract
Camera-equipped drones have emerged as an increasingly commonplace tool for media to acquire aerial imagery. Previous research has mainly focused on the innovative aspects and creative potential of the technology. This article argues that early optimistic projections reflected a novelty effect, typical of a culturally embedded idea that new and better technologies continuously replace older ones. Using a historical theory which distinguishes techno-optimistic innovation discourse from actual observations of technology in use, photojournalists were interviewed on the role of drones in news reporting. The results show that the practitioners historicise drones, relating them to previous aerial technologies, and they reflect on current and future uses of drones in journalism based on a notion of phases, where early hype gives way to subsequent drone fatigue. Drones are seen by many as a more convenient tool to do things that journalism has done before, but the convenience increases the use of aerial imagery. The results also show that, although photojournalists see a wide range of potential uses, there are also limitations, including the ideals of the invisible observer, safety concerns, and the perils of over-aesthetic imagery. The post-hype uses of drone photography were summarized in two categories: (a) revealing the site, establishing ‘this happened here’ and (b) presenting scope, or showing how vast or large something is.
- Published
- 2020
29. Aircraft Recycling – A Literature Review
- Author
-
Maaß, Svenja and Scholz, Dieter
- Subjects
Luftfahrzeug ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau ,ComputerApplications_COMPUTERSINOTHERSYSTEMS ,Aeronautics ,ddc:629,1 ,Material ,Boeing ,Flugzeug ,PAMELA ,Product life cycle ,Recycling ,CFRP ,Materials ,Regulations ,Airbus ,Kohlenstofffaserverstärkter Kunststoff ,Luftfahrt ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::629,1 | Luft- und Raumfahrttechnik ,Composite materials ,Airplanes ,AFRA ,Dewey Decimal Classification::600 | Technik ,End-of-Life ,Lebenszyklus ,ddc:620 ,CFK ,Richtlinie ,GLARE ,ddc:600 ,Repair ,Reparatur - Abstract
Purpose - The report summarizes the state-of-the-art in aircraft end-of-life strategies. A focus is on latest aircraft types with a high percentage of composite materials. --- Methodology - A literature review is the basic research method utilized. Apart from books, journals, conference proceedings, and dissertations, also technical reports and industrial news have been included into the search results. The field of aircraft end-of-life is still comparatively small, resulting in a manageable amount of literature addressing the topic directly. --- Findings - Research has been done on the topic by Airbus, Boeing, other industrial companies, and academic institutions. A market for recycled material is missing. Regulations about aircraft recycling are strongly needed but are not foreseeable in the near future. Nevertheless, the trend goes to extended producer responsibility. The aircraft recycling industry starts to build up now by the launch of several recycling plants. The aircraft recycling market will slowly mature with associations like the Aircraft Fleet Recycling Association (AFRA) and with the publication of guidance material for best practices. The significant higher percentage of composites in modern aircraft types is a challenge for aircraft recycling. --- Research limitations - The study provides only an overview on the aircraft end-of-life sector. Further research needs to be done on individual specific aspects. --- Value - The paper gives a year 2020 update on the state-of-the-art of aircraft end-of-life handling, including an overview on composite recycling regarding latest aircraft types.
- Published
- 2020
- Full Text
- View/download PDF
30. Relationships between Law Enforcement Authorities and Drone Journalists in Spain
- Author
-
Vanessa Rodríguez Breijo and Jorge Gallardo-Camacho
- Subjects
journalist ,Luftfahrzeug ,aerial footage ,pilot ,050801 communication & media studies ,journalism ,Media Politics, Information Politics, Media Law ,Medienpolitik, Informationspolitik, Medienrecht ,ddc:070 ,lcsh:Communication. Mass media ,0508 media and communications ,drones ,Communicator Research, Journalism ,Political science ,Journalismus ,fotografía aérea ,Social media ,news ,Fernsehen ,News media ,News media, journalism, publishing ,Spanien ,Nachrichten ,media technology ,prosecution ,Communication ,05 social sciences ,Law enforcement ,television ,Kommunikatorforschung, Journalismus ,lcsh:P87-96 ,Drone ,Medientechnik ,Work (electrical) ,Spain ,Law ,Strafverfolgung ,Journalism ,Publizistische Medien, Journalismus,Verlagswesen ,unmanned aerial vehicles ,0509 other social sciences ,periodismo ,050904 information & library sciences ,news production ,aircraft - Abstract
The article analyzes the relationship between law enforcement authorities and drone journalists, professionals who use unmanned aerial vehicles (UAVs) for newsgathering purposes, in Spain. The study has two specific objectives. First, to identify the criteria that law enforcement authorities have set for the public dissemination in traditional and social media of the drone footage they have obtained as part of their police operations, and to characterize the relationship that exists between law enforcement authorities and drone journalists. The study is guided by three hypotheses: Spanish law enforcement authorities have more capacity than journalists to shoot aerial news footage (H1); for Spanish law enforcement authorities, the informational use that can be made of the drone footage they obtain is of secondary importance (H2); and drone journalists feel their work is heavily restricted by law enforcement authorities (H3). These hypotheses are tested with the use of in-depth interviews with representatives of three law enforcement organizations in Spain and five drone pilots who have collaborated with news media outlets. The study concludes that the current regulatory framework for UAVs in Spain is very restrictive, in comparison to other countries, which prevents the development of drone journalism.
- Published
- 2020
31. The Mass Growth Factor – Snowball Effects in Aircraft Design
- Author
-
Cheema, John Singh and Scholz, Dieter
- Subjects
operating empty mass ,Reichweite ,Massenzunahme ,Betriebsleermasse ,Design ,Airplanes--Performance ,SFC ,Luftfahrzeug ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau ,Flugmechanik ,Aeronautics ,DOC ,ddc:629,1 ,Flugzeug ,Aerodynamics ,mass growth ,Airplanes--Fuel consumption ,aircraft design ,Payloads ,Flugzeugentwurf ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::629,1 | Luft- und Raumfahrttechnik ,Luftfahrt ,Betriebskosten ,Airplanes ,Dewey Decimal Classification::600 | Technik ,Nutzlast ,Masse ,Passagierflugzeug ,range ,mass ,ddc:620 ,ddc:600 ,aircraft - Abstract
Purpose – This project work shows a literature survey, clearly defines the mass growth factor, shows a mass growth iteration, and derives an equation for a direct calculation of the factor (without iteration). Definite values of the factor seem to be missing in literature. To change this, mass growth factors are being calculated for as many of the prominent passenger aircraft as to cover 90% of the passenger aircraft flying today. The dependence of the mass gain factor on requirements and technology is examined and the relation to Direct Operating Costs (DOC) is pointed out. --- Methodology – Calculations start from first principles. Publically available data is used to cal-culate a list of mass growth factors for many passenger aircraft. Using equations and the result-ing relationships, new knowledge and dependencies are gained. --- Findings – The mass growth factor is larger for aircraft with larger operating empty mass ratio, smaller payload ratio, larger specific fuel consumption (SFC), and smaller glide ratio. The mass growth factor increases much with increasing range. The factor depends on an increase in the fixed mass, so this is the same for the payload and empty mass. The mass growth factor for subsonic passenger aircraft is on average 4.2, for narrow body aircraft 3.9 and for wide body aircraft (that tend to fly longer distance) 4.9. In contrast supersonic passenger aircraft show a factor of about 14. --- Practical implications – The mass growth factor has been revisited in order to fully embrace the concept of mass growth and may lead to a better general understanding of aircraft design. --- Social implications – A detailed discussion of flight and aircraft costs as well as aircraft de-velopment requires detailed knowledge of the aircraft. By understanding the mass growth fac-tor, consumers can have this discussion with industry at eye level. --- Originality/value – The derivation of the equation for the direct calculation of the mass growth factor and the determination of the factor using the iteration method for current aircraft was not shown in the examined literature.
- Published
- 2020
32. Einfluss der unerwünschten Polarisationsanteile auf die empfangene Zielgröße einer DVOR-Antenne
- Author
-
Sandmann, Sergei and Garbe, Heyno
- Subjects
Luftfahrzeug ,ddc:621,3 ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik ,DVOR ,Dewey Decimal Classification::600 | Technik ,ddc:600 ,Konferenzschrift ,Doppler-Drehfunkfeuer - Abstract
Die Funktionsweise eines Doppler-Drehfunkfeuers (engl. Doppler Very High Frequency Omnidirectional Radio Range (DVOR)) beruht darauf, dem Luftfahrzeug (LFZ) den azimutalen Winkel ϕ zur Verfügung zu stellen, der sich aus der Perspektive der DVOR zwischen magnetisch Nord und der Standlinie zum LFZ ergibt. Wie in Kap. 2 genauer erläutert, ist die DVOR-Anlage dabei auf eine möglichst ungestörte Feldausbreitung im Raum angewiesen, um eine hohe Genauigkeit der Zielgröße zu erreichen. Neben einer gestörten Feldausbreitung im Raum existieren jedoch weitere Störmechanismen, die bei der Untersuchung der Zielgrößengenauigkeit berücksichtigt werden müssen. So ist der Gegenstand der vorliegenden Arbeit die Untersuchung des Einflusses der unerwünschten Polarisationsanteile auf die empfangene Zielgröße ϕ. Während die DVOR-Anlage ihre Zielgröße in der orbitalen Polarisation abstrahlt [1], empfängt die Antenne des FLZ auch Anteile aus der radialen und vertikalen Polarisation. Das Verhältnis dieser Polarisationsanteile variiert dabei in Abhängigkeit von der Lage des LFZ im Raum. Um die entsprechenden Einflüsse zu untersuchen, wurde auf einer zylindrischen, repräsentativ angeordneten Analysefläche im Raum die Zielgröße ϕ eines im Ursprung befindlichen DVOR für ein LFZ berechnet, während dessen Schräglage in allen drei Achsen variiert wurde. Zusätzlich wurden Windenergieanlagen (WEA) zwischen DVOR und Analysefläche eingefügt, sodass die Störeinflüsse auch in Gegenwart von Streukörpern untersucht werden konnten.
- Published
- 2020
- Full Text
- View/download PDF
33. Audience Attention and Emotion in News Filmed with Drones: A Neuromarketing Research
- Author
-
Alberto Luis García-García, Ignacio J. Martín-Moraleda, and Luis Mañas-Viniegra
- Subjects
Tecnología de la información ,Medienökonomie, Medientechnik ,Luftfahrzeug ,Neuromarketing ,galvanic skin response ,050801 communication & media studies ,Periodismo ,breaking news ,journalism ,drone ,eye tracking ,ddc:070 ,lcsh:Communication. Mass media ,0508 media and communications ,Communicator Research, Journalism ,audiovisual media ,Journalismus ,0502 economics and business ,audiovisuelle Medien ,news ,audiovisual technology ,emotional journalism ,neuromarketing ,unmanned aerial vehicles ,News media, journalism, publishing ,Audiovisual technology ,Nachrichten ,media technology ,communication ,05 social sciences ,Media studies ,Kommunikation ,Comunicación audiovisual ,Kommunikatorforschung, Journalismus ,Drone ,lcsh:P87-96 ,Medientechnik ,Eye tracking ,050211 marketing ,Journalism ,Publizistische Medien, Journalismus,Verlagswesen ,Media Economics, Media Technology ,Psychology ,Skin conductance ,aircraft ,Storytelling - Abstract
Emotional journalism is being driven by audiovisual technology such as drones, also known as unmanned aerial vehicles, which have demonstrated their usefulness in transforming objective news into news stories from a new visual perspective, facilitating access to dangerous or difficult places. They also allow for greater immersion by an audience that has become an active participant in the news, and they contribute to the storytelling of communication despite the risk to privacy and security that their misuse might entail. The aim of this research is to determine the differences in attention and intensity of the emotions experienced when viewing two pieces of audiovisual news: One was filmed with the technological support of a drone, and the other was produced in the conventional way. The techniques of eye tracking and galvanic skin response were used in 30 Spanish university students. The results suggest that attention was focused on the most spectacular visual elements, although the images filmed with a drone received a higher concentration of attention from the subjects, and this attention was spread throughout the entire image, which demonstrates that drones enhance the effectiveness of panoramic images with natural landscapes. The greatest emotion generated by viewing the images recorded with drones was statistically significant, but it was limited exclusively to these particular scenes, and not to the entire recording of the news.
- Published
- 2020
34. Dual Control: Investigating the Role of Drone (UAV) Operators in TV and Online Journalism
- Author
-
Catherine Adams
- Subjects
Medienökonomie, Medientechnik ,Process (engineering) ,Luftfahrzeug ,media_common.quotation_subject ,pilot ,050801 communication & media studies ,Passion ,Context (language use) ,Großbritannien ,journalism ,Space (commercial competition) ,drone ,tv ,ddc:070 ,lcsh:Communication. Mass media ,0508 media and communications ,Communicator Research, Journalism ,Journalismus ,0501 psychology and cognitive sciences ,Quality (business) ,Sociology ,Fernsehen ,050107 human factors ,media_common ,News media, journalism, publishing ,Online-Medien ,media technology ,Communication ,05 social sciences ,Media studies ,Great Britain ,Video ,television ,Kommunikatorforschung, Journalismus ,online media ,Drone ,lcsh:P87-96 ,Medientechnik ,operator ,unmanned aerial vehicles ,Journalism ,Publizistische Medien, Journalismus,Verlagswesen ,Media Economics, Media Technology ,Raw data ,aircraft - Abstract
At a time when TV and online journalism embraces more moving images filmed from drones than ever before, this article seeks to explore the thoughts and actions of those who produce them. It builds on earlier research into how aerial images impact on the viewer through the lens of ‘quality journalism’ (Adams, 2018). It investigates how drone operators are involved in the journalistic process, what meanings and effects they seek and who controls their work in a market-driven environment. Qualitative analysis was carried out of seventeen in-depth interviews with drone operators, journalists and editors working in UK and around the world. Data revealed a high degree of creative freedom among the operators, a passion for using drones and some desire to immerse and impress the viewer. It showed that aerial images have become paramount in video journalism amid market pressures to find ever more sophisticated and ‘cinematic’ shots. Interviewees felt drones had been “good for journalism,” by providing raw data, exciting new perspectives, context and story-telling techniques and “space to think.” The article explores the significant yet often unplanned contribution to the journalistic process of the drone operator and recommends more is done to increase understanding between journalist and pilot, such as providing training courses designed to teach quality drone journalism, as the media approaches ‘peak drone.’
- Published
- 2020
35. UAV-borne 2-D and 3-D radar-based grid mapping
- Author
-
Christina Knill, Christian Waldschmidt, Philipp Hugler, and Timo Grebner
- Subjects
Occupancy grid mapping ,Computer science ,Luftfahrzeug ,MIMO ,Real-time computing ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,ComputerApplications_COMPUTERSINOTHERSYSTEMS ,Grids (Cartography) ,law.invention ,MIMO systems ,Computer Science::Robotics ,multiple-input multiple-output (MIMO) radar ,law ,Robustness (computer science) ,unmanned aerial vehicle (UAV) ,DDC 620 / Engineering & allied operations ,ComputerSystemsOrganization_SPECIAL-PURPOSEANDAPPLICATION-BASEDSYSTEMS ,Electrical and Electronic Engineering ,Radar ,Drohne ,Drone aircraft ,occupancy gridmap (OGM) ,Payload ,Ranging ,Geotechnical Engineering and Engineering Geology ,Grid ,Lidar ,Frequency-modulated continuous-wave radar ,ddc:620 - Abstract
For unmanned aerial vehicles (UAVs), grid maps can be a versatile tool for navigation and self-localization. In general, payload is critical for UAVs and every additional sensor limits the flight duration. Due to its robustness and the ability to directly measure velocities, radar sensors are well suited for sense and avoid applications (SAAs) for UAVs. It would be advantageous if these sensor data could be used to generate grid maps instead of mounting additional sensors such as light detection and ranging (LiDAR). This letter demonstrates that using the data from high-resolution multiple-input-multiple-output (MIMO) imaging radars, high-resolution 2-D and 3-D radar grid maps can be created. The necessary adaption of the sensors free-space model for MIMO radar-based occupancy grid maps is presented in detail. UAV-borne measurements resulting in 2-D and 3-D grid maps with an adequate representation of the environment validate this approach., acceptedVersion
- Published
- 2020
- Full Text
- View/download PDF
36. Media and Communication
- Author
-
M. S. Duncan, Kathleen Bartzen Culver, and Communication
- Subjects
United States of America ,Medienethik ,ddc:070 ,lcsh:Communication. Mass media ,0508 media and communications ,drones ,050602 political science & public administration ,Data Protection Act 1998 ,Sociology ,media ethics ,Berichterstattung ,media technology ,reporting ,Communication ,05 social sciences ,Kommunikatorforschung, Journalismus ,innovation ,lcsh:P87-96 ,0506 political science ,news audiences ,Outreach ,publication ,Media Economics, Media Technology ,confidence ,aircraft ,News audiences ,Vertrauen ,Medienökonomie, Medientechnik ,Luftfahrzeug ,050801 communication & media studies ,journalism ,Unmanned aerial vehicles ,Communicator Research, Journalism ,Journalismus ,Openness to experience ,Publikation ,Innovation ,News media ,USA ,Drones ,News media, journalism, publishing ,unmanned aerial vehicles ,data protection ,Media studies ,Datenschutz ,Transparency (behavior) ,Drone ,Medientechnik ,Media ethics ,Journalism ,Publizistische Medien, Journalismus,Verlagswesen - Abstract
Drones can provide a bird’s eye view of breaking news and events that can be streamed live or used in edited news coverage. Past research has focused on the training and ethics of journalists and drone operators. Little attention, however, has been given to audiences and their acceptance and perception of ethics. We suggest that audiences who are open to personal technology use will perceive news media using unmanned aerial vehicles (UAVs) as more ethical in an extension of the Diffusion of Innovation Theory. In a survey (N = 548) of adults living in the United States, we explore the correlates between trust, technology, privacy, and the use of UAVs. Results suggest all three are positively correlated with openness toward drone journalism. We find the audience has preferences for the types of news stories that should be covered using drones. Participants indicated they welcome drone journalism when covering traffic and investigative stories, but not celebrities and politicians. The findings have implications for newsrooms, suggesting transparency and outreach to educate people on the technology could help build trust. Further, the results suggest that Diffusion of Innovation theory can be applied when mediated through news media. Published version
- Published
- 2020
37. Induced Drag Estimation of Box Wings for Conceptual Aircraft Design
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Scholz, Dieter
- Subjects
Luftfahrzeug ,BWA ,angle of attack ,Vortex Lattice Method ,wind tunnel ,Flugmechanik ,VLM ,decalage ,lift ,Oswald Factor ,Prandtl ,wing ,aircraft design ,static stability ,Flugzeugentwurf ,Luftfahrt ,box wing ,aviation ,induced drag ,flight mechanics ,stagger ,drag ,aircraft ,aerodynamics ,Aerodynamik - Abstract
This presentation gives straight advice to calculate induced drag of box wings for the conceptual aircraft design phase. Common for passenger aircraft is a Box Wing Aircraft (BWA) with negative stagger: The forward wing is the low wing. As such the aft wing can use the vertical tail structure for highest h/b ratio. This configuration could use slight positive decalage (more angle of attack on the upper wing) to adapt the upper wing to the downwash from the front wing. However: Positive decalage can lead to separation already at lower angle of attack and hence reduced maximum lift coefficient. A conservative design should do without decalage. An unequal lift share (between forward and aft wing) – as required by static longitudinal stability – does not necessarily lead to increased induced drag at (typical) negative stagger. Wind tunnel measurements and Vortex Lattice Method (VLM) calculations lead to a proposal of "k-values" for the "box wing equation" not far from Prandtl's results., https://dlrk2019.dglr.de
- Published
- 2019
- Full Text
- View/download PDF
38. Dynamic Cabin Air Contamination Calculation Theory
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Lakies, Marcel and Lakies, Marcel
- Abstract
In this report an equation is derived to calculate the dynamic effect of primary and secondary aircraft cabin air contamination. The equation is applied in order to understand implications and hazards. Primary contamination is from an outside source in form of normal low level contamination or high level contamination in a failure case. Secondary contamination originates from deposited material released into the cabin by a trigger event. The dynamic effect is described as an initial value problem (IVP) of a system governed by a nonhomogeneous linear first order ordinary differential equation (ODE). More complicated excitations are treated as a sequence of IVPs. The ODE is solved from first principles. Spreadsheets are provided with sample calculations that can be adapted to user needs. The method is not limited to a particular principle of the environmental control system (ECS) or contamination substance. The report considers cabin air recirculation and several locations of contamination sources, filters, and deposit points (where contaminants can accumulate and from where they can be released). This is a level of detail so far not considered in the cabin air literature. Various primary and secondary cabin contamination scenarios are calculated with plausible input parameters taken from popular passenger aircraft. A large cabin volume, high air exchange rate, large filtered air recirculation rate, and high absorption rates at deposit points lead to low contamination concentration at given source strength. Especially high contamination concentrations would result if large deposits of contaminants are released in a short time. The accuracy of the results depends on the accuracy of the input parameters. Five different approaches to reduce the contaminant concentration in the aircraft cabin are discussed and evaluated. More effective solutions involve higher implementation efforts. The method and the spreadsheets allow predicting cabin air contamination concentrations i
- Published
- 2019
39. Ausgewählte statistische Betrachtungen im Flugzeugentwurf: Superkritische Profile und Fahrwerk
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Gulla, Duncan and Gulla, Duncan
- Abstract
Kenntnisse über Parametereigenschaften und Charakteristiken von Flugzeugkomponenten sind eine wesentliche Grundlage für Methoden des Flugzeugentwurfs. Daher ist Ziel dieser Arbeit, statistische Merkmale und Kenngrößen einer für den Flugzeugbau und Entwurf relevanten Auswahl an Komponenten zu erschließen. Dabei wurden zunächst superkritische Tragflügelprofile hinsichtlich ihrer geometrischen Eigenschaften (relative Profildicke, Wölbung, Dickenrücklage, Wölbungsrücklage und der sogenannte "Leading Edge Sharpness Parameter") untersucht. Diese Eigenschaften wurden mit der Software XFLR5 aus einer Auswahl an superkritischen Profilgeometrien erhoben und mit grafischen und beschreibenden Statistikmethoden ausgewertet. Die Profile wiesen relative Wölbungen von 0 % bis 3,4 % auf, die Mehrzahl entfiel auf Wölbungen von 1 % bis 2 %. Die Wölbungsrücklagen zeigten die für superkritische Profile typische Lage im hinteren Profilbereich zwischen 70 % und 90 % der Profiltiefe. Die Dickenrücklagen verteilten sich um einen Mittelwert von 37 % der Profiltiefe. Eine Betrachtung von Flugzeugreifendimensionen sollte das Verhältnis von Reifenbreite zum Durchmesser w/d charakterisieren. Es wurde ein annähernd lineares Verhalten festgestellt. Die Werte des Parameters w/d umfassten einen Bereich von 0,3 bis 0,4. Durch Regressionsanalysen konnten auch die Abhängigkeiten des Parameters w/d von nur einer bekannten Reifendimension (Breite oder Durchmesser) aufgezeigt werden. Die im Rahmen dieser Arbeit dargestellten Erkenntnisse können als Grundlage weiterführender Untersuchungen genutzt werden.
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- 2019
40. Health Monitoring for Aircraft Systems using Decision Trees and Genetic Evolution
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Gerdes, Mike and Gerdes, Mike
- Abstract
Reducing unscheduled maintenance is important for aircraft operators. There are significant costs if flights must be delayed or cancelled, for example, if spares are not available and have to be shipped across the world. This thesis describes three methods of aircraft health condition monitoring and prediction; one for system monitoring, one for forecasting and one combining the two other methods for a complete monitoring and prediction process. Together, the three methods allow organizations to forecast possible failures. The first two use decision trees for decision-making and genetic optimization to improve the performance of the decision trees and to reduce the need for human interaction. Decision trees have several advantages: the generated code is quickly and easily processed, it can be altered by human experts without much work, it is readable by humans, and it requires few resources for learning and evaluation. The readability and the ability to modify the results are especially important; special knowledge can be gained and errors produced by the automated code generation can be removed. A large number of data sets is needed for meaningful predictions. This thesis uses two data sources: first, data from existing aircraft sensors, and second, sound and vibration data from additionally installed sensors. It draws on methods from the field of big data and machine learning to analyse and prepare the data sets for the prediction process.
- Published
- 2019
41. Überprüfung einer einfachen Kopfrechenmethode zur Umrechnung der Fluggeschwindigkeit von CAS in TAS
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Lucht, Dennis and Lucht, Dennis
- Abstract
Zweck - Von Piloten werden u.a. die sogenannten "Manual Flying Skills" gefordert. Dabei muss der Pilot in der Lage sein (ohne Autopiloten) nach grundlegenden Instrumenten zu fliegen. Dafür sind neben Geschick auch Faustformeln erforderlich. Die Faustformeln müssen dafür verlässlich sein. Der Inhalt dieser Arbeit beschäftigt sich exemplarisch mit einer Faustformel zur Umrechnung der kalibrierten Fluggeschwindigkeit (Calibrated Airspeed, CAS) in die wahre Fluggeschwindigkeit (True Airspeed, TAS). --- Methodik - In Excel und Matlab werden die Ergebnisse aus den Berechnungen der Faustformel mit dem Ergebnis einer exakten Berechnungsweise anhand flugmechanischer Formeln verglichen. Dabei wird die Flughöhe und Fluggeschwindigkeit variiert. Es werden die Abweichungen ermittelt und in Diagrammen zwei- und dreidimensional visualisiert. --- Ergebnisse - Die zu prüfende Faustformel liefert in dem für Sie vorgesehen Anwendungsbereich hinreichend genaue Ergebnisse mit Abweichungen unter 5 %. Dabei nehmen die Abweichung zu, umso weiter die Parameter (Höhe und Geschwindigkeit) von typischen Reiseflugbedingungen entfernt sind. --- Bedeutung in der Praxis - Piloten können bedenkenlos auf die in dieser Arbeit geprüfte Faustformel zurückgreifen und kommen so mit überschaubarem Kopfrechenaufwand auf relativ genaue Ergebnisse. --- Wert - Diese Arbeit zeigt, wie mit mäßigem Zeitaufwand in Excel eine Faustformel über einen gesamten Bereich geprüft werden kann. Das Vorgehen kann auf weitere Faustformeln übertragen werden, sodass sich ein Pilot sein "Kniebrett" mit verifizierten Faustformeln füllen kann.
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- 2019
42. Evaluation of the Hybrid-Electric Aircraft Project Airbus E-Fan X
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Benegas Jayme, Diego and Benegas Jayme, Diego
- Abstract
Purpose - This master thesis evaluates the hybrid-electric aircraft project E-Fan X with respect to its economical and environmental performance in comparison to its reference aircraft, the BAe 146-100. The E-Fan X is replacing one of the four jet engines of the reference aircraft by an electric motor and a fan. A turboshaft engine in the cargo compartment drives a generator to power the electric motor. --- Methodology - The evaluation of this project is based on standard aircraft design equations. Economics are based on Direct Operating Costs (DOC), which are calculated with the method of the Association of European Airlines (AEA) from 1989, inflated to 2019 values. Environmental impact is assessed based on local air quality (NOx, Ozone and Particulate Matter), climate impact (CO2, NOx, Aircraft-Induced Cloudiness known as AIC) and noise pollution estimated with fundamental acoustic equations. --- Findings - The battery on board the E-Fan X it is not necessary. In order to improve the proposed design, the battery was eliminated. Nevertheless, due to additional parts required in the new configuration, the aircraft is 902 kg heavier. The turboshaft engine saves only 59 kg of fuel. The additional mass has to be compensated by a payload reduced by 9 passengers. The DOC per seat-mile are up by more than 10% and equivalent CO2 per seat-mile are more than 16% up in the new aircraft. --- Research limitations - Results are limited in accuracy by the underlying standard aircraft design calculations. The results are also limited in accuracy by the lack of knowledge of some data of the project. --- Practical implications - The report contributes arguments to the discussion about electric flight. --- Social implications - Results show that unconditional praise given to the environmental characteristics of this industry project are not justified.
- Published
- 2019
43. Basic Comparison of Three Aircraft Concepts: Classic Jet Propulsion, Turbo-Electric Propulsion and Turbo-Hydraulic Propulsion
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Rodrigo, Clinton and Rodrigo, Clinton
- Abstract
Purpose - This thesis presents a comparison of aircraft design concepts to identify the superior propulsion system model among turbo-hydraulic, turbo-electric and classic jet propulsion with respect to Direct Operating Costs (DOC), environmental impact and fuel burn. --- Approach - A simple aircraft model was designed based on the Top-Level Aircraft Requirements of the Airbus A320 passenger aircraft, and novel engine concepts were integrated to establish new models. Numerous types of propulsion system configurations were created by varying the type of gas turbine engine and number of propulsors. --- Findings - After an elaborate comparison of the aforementioned concepts, the all turbo-hydraulic propulsion system is found to be superior to the all turbo-electric propulsion system. A new propulsion system concept was developed by combining the thrust of a turbofan engine and utilizing the power produced by the turbo-hydraulic propulsion system that is delivered via propellers. The new partial turbo-hydraulic propulsion concept in which 20% of the total cruise power is coming from the (hydraulic driven) propellers is even more efficient than an all turbo-hydraulic concept in terms of DOC, environmental impact and fuel burn. --- Research Limitations - The aircraft were modelled with a spreadsheet based on handbook methods and relevant statistics. The investigation was done only for one type of reference aircraft and one route. A detailed analysis with a greater number of reference aircraft and types of routes could lead to other results. --- Practical Implications - With the provided spreadsheet, the DOC and environmental impact can be approximated for any commercial reference aircraft combined with the aforementioned propulsion system concepts. --- Social Implications - Based on the results of this thesis, the public will be able to discuss the demerits of otherwise highly lauded electric propulsion concepts. --- Value - To evaluate the viability of the hydraulic propu
- Published
- 2019
44. Fallbeispiele zum Reverse Engineering im Passagierflugzeugentwurf
- Author
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Cheema, John Singh and Cheema, John Singh
- Abstract
Zweck - In dieser Bachelorarbeit werden die öffentlich nicht zugänglichen Technologieparameter von Passagierflugzeugen näherungsweise bestimmt. Das sind maximaler Auftriebsbeiwert bei Start und Landung, maximale Gleitzahl und spezifischer Kraftstoffverbrauch im Reiseflug. Folgende Flugzeuge werden paarweise untersucht und verglichen: A340-300 und IL-96-300, Boeing 727-200 Advanced und TU-154M, Fokker 100 und MD-82, A319-100 und An-72. --- Methodik - Die Berechnung erfolgt mit dem Excel-basierten Werkzeug "Passenger Jet Reverse Engineering" (PJRE). Grundlage der Berechnung ist die aus dem Flugzeugentwurf bekannte Dimensionierung mit dem Entwurfsdiagramm. Für die ausgewählten Passagierflugzeuge werden die erforderlichen Eingangsparameter recherchiert. Die zunächst unbekannten Technologieparameter werden dann mit PRJE sowohl ermittelt als auch verifiziert. --- Ergebnisse - Die Ergebnisse aus dem Reverse Engineering stimmen recht gut überein mit den Werten aus der Verifikation. Lediglich die Werte der maximalen Gleitzahl im Reiseflug sind berechnet aus der Verifikation oft deutlich höher als berechnet aus dem Reverse Engineering. Der spezifische Kraftstoffverbrauch im Reiseflug hat sich über die Jahrzehnte der Flugzeugentwicklung stark verringert. --- Bedeutung für die Praxis - Durch die Konkurrenzsituation der Flugzeughersteller können viele Flugzeugparameter nicht öffentlich zur Verfügung gestellt werden. Die Anwendung von PJRE zeigt, wie diese Parameter trotzdem näherungsweise ermittelt werden können. --- Soziale Bedeutung - Eine detaillierte Diskussion über Flugkosten, Ticketpreise und die Umweltverträglichkeit des Flugverkehrs setzt detaillierte Kenntnisse über die Flugzeuge voraus. Durch ein Reverse Engineering können Verbraucher diese Diskussion mit der Industrie auf Augenhöhe führen. --- Originalität / Wert - Nach der Entwicklung von PJRE wird die Methode hier zum ersten Mal angewandt.
- Published
- 2019
45. Der A400M - deutscher Beitrag zum Aufbau eigener EU-Lufttransportfähigkeiten: drei Optionen für eine Umsetzung unter Beteiligung der EU
- Author
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Stiftung Wissenschaft und Politik -SWP- Deutsches Institut für Internationale Politik und Sicherheit, Schulz, René, Stiftung Wissenschaft und Politik -SWP- Deutsches Institut für Internationale Politik und Sicherheit, and Schulz, René
- Abstract
Verteidigungsministerin Ursula von der Leyen sagte in ihrer Rede auf der Berliner Sicherheitskonferenz 2018, die europäische Verteidigungsunion sei im Werden und alle Initiativen dienten der Verzahnung der Streitkräfte sowie dem Aufbau gemeinsamer Fähigkeiten. Zurzeit plant das Bundesministerium der Verteidigung (BMVg) den Aufbau einer multinationalen Transporteinheit mit 13 Airbus-Flugzeugen des Typs A400M, die Deutschland gekauft hat, aber selbst nicht nutzen will. Es gibt jedoch Alternativen zum Vorschlag des BMVg: Deutschland könnte diese Maschinen der EU für Missionen oder Operationen im Rahmen der Gemeinsamen Sicherheits- und Verteidigungspolitik (GSVP) zur Verfügung stellen – dies wäre ein konkreter Schritt in Richtung einer europäischen Verteidigungsunion. Damit könnte die Bundesrepublik ein Signal für weitere Vorhaben setzen, zum Beispiel für ein europäisches Ausbildungsprogramm. (Autorenreferat)
- Published
- 2019
46. Der A400M - deutscher Beitrag zum Aufbau eigener EU-Lufttransportfähigkeiten: drei Optionen für eine Umsetzung unter Beteiligung der EU
- Author
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Schulz, René, Stiftung Wissenschaft Und Politik, and Stiftung Wissenschaft und Politik -SWP- Deutsches Institut für Internationale Politik und Sicherheit
- Subjects
Reichweite ,weapon ,Luftfahrzeug ,Politikwissenschaft ,Friedens- und Konfliktforschung, Sicherheitspolitik ,Einsatz ,Peace and Conflict Research, International Conflicts, Security Policy ,Konzeption ,Transport ,civil-military cooperation ,coverage ,Federal Republic of Germany ,internationale Zusammenarbeit ,deployment ,Political science ,military ,transportation ,Militär ,zivil-militärische Zusammenarbeit ,international cooperation ,Bundesrepublik Deutschland ,ddc:320 ,Waffe ,A400M ,Militärische Anforderungen an Waffen/Gerät ,Flugkörpern oder Lenkwaffen ,Nutzlast von Luftfahrzeugen ,conception ,EU ,aircraft - Abstract
Verteidigungsministerin Ursula von der Leyen sagte in ihrer Rede auf der Berliner Sicherheitskonferenz 2018, die europäische Verteidigungsunion sei im Werden und alle Initiativen dienten der Verzahnung der Streitkräfte sowie dem Aufbau gemeinsamer Fähigkeiten. Zurzeit plant das Bundesministerium der Verteidigung (BMVg) den Aufbau einer multinationalen Transporteinheit mit 13 Airbus-Flugzeugen des Typs A400M, die Deutschland gekauft hat, aber selbst nicht nutzen will. Es gibt jedoch Alternativen zum Vorschlag des BMVg: Deutschland könnte diese Maschinen der EU für Missionen oder Operationen im Rahmen der Gemeinsamen Sicherheits- und Verteidigungspolitik (GSVP) zur Verfügung stellen – dies wäre ein konkreter Schritt in Richtung einer europäischen Verteidigungsunion. Damit könnte die Bundesrepublik ein Signal für weitere Vorhaben setzen, zum Beispiel für ein europäisches Ausbildungsprogramm. (Autorenreferat)
- Published
- 2019
47. Proceedings of the International Aircraft Cabin Air Conference 2017
- Author
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Global Cabin Air Quality Executive (GCAQE), Scholz, Dieter, Michaelis, Susan, Loraine, Tristan, Scholz, Dieter, Michaelis, Susan, King, Emma, and Loraine, Tristan
- Subjects
cabin air ,Technology ,Trikresylphosphat ,air ,Luftfahrzeug ,Science ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau ,Aircraft Cabins ,Aeronautics ,Flugzeugkabine ,ddc:629,1 ,cabin ,contamination ,Airline ,ACA2017 ,Aerospace ,ECS ,Luftfahrt ,Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::629,1 | Luft- und Raumfahrttechnik ,Airplanes ,Proceedings ,Health ,Passagierflugzeug ,Operator ,tricresyl phosphate ,Air--Pollution ,ddc:620 ,Safety ,TCP ,aircraft ,Regulation - Abstract
The conference proceedings deal with aircraft air supplies in current large passenger transport aircraft. Apart from the Boeing 787, all passenger aircraft utilize nonfiltered air (bleed air) drawn from the compressor stage of turbine engines to provide pressurization and breathing air. This design has been utilized since the 1950s and 60s. Synthetic jet engine oils and other fluids in aircraft systems are recognized and known to contaminate the bleed air supply, impacting flight safety, occupational and public health. The conference principal organizer was the Global Cabin Air Quality Executive (GCAQE), which was established in 2006 as a global coalition of health and safety advocates committed to raising awareness and finding solutions to poor air quality in aircraft. The conference program of the 2017 International Aircraft Cabin Air Conference included more than 30 oral and video presentations presented by scientists, doctors, pilots, cabin crew, engineers and experts from 11 countries covering a broad spectrum of topics. Most of these presentations are presented in these proceedings published first with the Journal of Health & Pollution. The topics include engine design and mechanisms of oil leakage, flight safety, occupational health and safety, regulatory issues, risk management, international actions, reporting, medical and scientific evidence, jet oils, filtration, air quality sensors, legal implications and causation., https://www.AircraftCabinAir.com
- Published
- 2019
- Full Text
- View/download PDF
48. Technical Solutions to the Problem of Contaminated Cabin Air
- Author
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Scholz, Dieter
- Subjects
cabin air ,filter ,Kontamination ,Luftfahrzeug ,air ,smell event ,Kabinenluft ,Luftfahrt ,air conditioning ,crew ,cabin ,contamination ,passenger ,aviation ,fume event ,recirculation ,CACE ,compressor ,aircraft ,bleed air - Abstract
Purpose – This presentation gives an introduction to the problem of contaminated cabin air and points out possible solutions especially by looking at carbon filters placed in the main path of the bleed air from the engine to the cabin ("total cabin air filtration") in additon to filters in the cabin air recirculation path. Maintenance issures related to the topic are also considered. --- Design/methodology/approach – The literature review is complemented with own explanations, thoughts and derivations. --- Findings – There is a real health and flight safety risk due to contaminated cabin air. For the infrequent flyer the risk is very low. Also aviation statistics are not dominated by cabin air related accidents. Nevertheless, a bleed air based air conditioning system can be regarded as applying a fundamentally wrong systems engineering approach. A substantial improvement of the situation can only be reached with filters added to the large fleet of existing airplanes. A full solution, however, requires air conditioning with outside air and dedicated compressors. --- Research limitations/implications – The study is based primarily on references. --- Practical implications – Passengers and crew are made aware of the risk of cabin air contamination based on technical facts. Given detailes of technical solutions contribute to the scientific discussion. --- Social implications – Better knowledge of the problem should enable passengers and crew to maintain a firm position in the sometimes heated discussion. --- Originality/value – Engineering based information with a critical view on the topic seems to be missing in public. This presentation contributes filling this gap., https://dlrk2018.dglr.de
- Published
- 2018
- Full Text
- View/download PDF
49. Characteristics of the Specific Fuel Consumption for Jet Engines
- Author
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Bensel, Artur and Bensel, Artur
- Abstract
Purpose of this project is a) the evaluation of the Thrust Specific Fuel Consumption (TSFC) of jet engines in cruise as a function of flight altitude, speed and thrust and b) the determination of the optimum cruise speed for maximum range of jet airplanes based on TSFC characteristics from a). Related to a) a literature review shows different models for the influence of altitude and speed on TSFC. A simple model describing the influence of thrust on TSFC seems not to exist in the literature. Here, openly available data was collected and evaluated. TSFC versus thrust is described by the so-called bucket curve with lowest TSFC at the bucket point at a certain thrust setting. A new simple equation was devised approximating the influence of thrust on TSFC. It was found that the influence of thrust as well as of altitude on TSFC is small and can be neglected in cruise conditions in many cases. However, TSFC is roughly a linear function of speed. This follows already from first principles. Related to b) it was found that the academically taught optimum flight speed (1.316 times minimum drag speed) for maximum range of jet airplanes is inaccurate, because the derivation is based on the unrealistic assumption of TSFC being constant with speed. Taking account of the influence of speed on TSFC and on drag, the optimum flight speed is only about 1.05 to 1.11 the minimum drag speed depending on aircraft weight. The amount of actual engine data was extremely limited in this project and the results will, therefore, only be as accurate as the input data. Results may only have a limited universal validity, because only four jet engine types were analyzed. One of the project's original value is the new simple polynomial function to estimate variations in TSFC from variations in thrust while maintaining constant speed and altitude.
- Published
- 2018
50. Die Genauigkeit einer vereinfachten Berechnung der Steigzeit von Flugzeugen
- Author
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Mutschall, Marcel and Mutschall, Marcel
- Abstract
Ziel - Die Zeit die ein Flugzeug benötigt, um auf eine bestimmte Höhe zu steigen (die Steigzeit) kann mit einer Formel berechnet werden, die vereinfachend annimmt, dass die Steiggeschwindigkeit über dem gesamten Steigflug mit zunehmender Höhe linear abnimmt. Ziel der Untersuchung ist, zu ermitteln, ob die Annahme einer linear abnehmenden Steiggeschwindigkeit realistisch ist bzw. welche Fehler sich aus der Annahme ergeben. ----- Methode - Mit der Höhe ändern sich Parameter wie Luftdichte, Widerstand, Schub und damit auch die optimale Fluggeschwindigkeit für den Steigflug. Die Parameter beeinflussen sich dabei gegenseitig. Der Schub wird dabei nach drei unterschiedlichen Methoden berechnet, gegeben von Bräunling, Scholz und Howe. Analysiert wird der Verlauf des Schubes mit der Höhe und der Verlauf der Steiggeschwindigkeit mit der Höhe für jede der drei Schubberechnungen. Abschließend wird für jede Schubberechnung die Steigzeit verglichen wie sie sich ergibt a) aus der einfachen Formel und b) aus einer Integrationsberechnung, bei der der Verlauf der Steiggeschwindigkeit durch eine Funktion beschrieben wird. ----- Ergebnisse - Die drei Schubberechnungen liefern ausgehend vom gleichen Startschub unterschiedliche Schübe in der Höhe. In die Methode nach Bräunling gehen mehr Parameter ein als in die anderen beiden Methoden. Es kann angenommen werden, dass die Methode nach Bräunling genauer ist, der Beweis kann aber nicht geführt werden. Der Schub nach Scholz und Howe fällt nahezu linear mit der Höhe ab. Der Schubverlauf nach Bräunling zeigt eine deutliche Nichtlinearität. Es wird die Steigzeit von 0 km auf 11 km Höhe berechnet nach a) und b), mit jeder der drei Schubberechnungen. Dabei wird jeweils der Unterschied in der Steigzeit ermittelt. Aufgrund der Nichtlinearität im Schubverlauf zeigt die Methode nach Bräunling dann auch den größten Unterschied zwischen den Berechnungsmethoden von 7,1 %. Bei einer Schubberechnung nach Scholz ergeben sich 1,7 % und nach Howe 1,4 %. We
- Published
- 2018
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