Search

In the modern era, new and innovative ways of securing data and communications are continuously developing. One such recent development is using the concept of DNA as a means of data encryption. In this work, we propose a new approach to encrypt data and communications on the MAVLink protocol for unmanned aerial vehicles (UAVs) using a lightweight GIFT algorithm and dynamic DNA coding (with binary bits). MAVLink is a communication protocol for UAVs, which is currently unencrypted and can easily be intercepted by anyone. As such, a secure MAVLink protocol has long been needed in the UAV industry. We describe a novel secure communication protocol for UAVs using dynamic DNA coding to encrypt MAVLink packets, which we call DMAV. Experimental results show that this novel means of securing the MAVLink protocol performs better than the traditional method (i.e., using public and private key cryptography). Therefore, the proposed approach could potentially change the way secure communications are conducted between UAVs in the future. [ABSTRACT FROM AUTHOR]

Most interesting area is the growing demand of flying-IoT mergers with smart cities. However, aerial vehicles, especially unmanned aerial vehicles (UAVs), have limited capabilities for maintaining node energy efficiency. In order to communicate effectively, IoT is a key element for smart cities. While improving network performance, routing protocols can be deployed in flying-IoT to improve latency, packet drop rate, packet delivery, power utilization, and average-end-to-end delay. Furthermore, in literature, proposed techniques are verymuch complex which cannot be easily implemented in realworld applications. This issue leads to the development of lightweight energyefficient routing in flying-IoT networks. This paper addresses the energy conservation problem in flying-IoT. This paper presents a novel approach for the internet of flying vehicles using DSDV routing. ISH-DSDV gives the notion of bellman-ford algorithm consisting of routing updates, information broadcasting, and stale method. DSDV shows optimal results in comparison with other contemporary routing protocols. Nomadic mobility model is utilized in the scenario of flying networks to check the performance of routing protocols. [ABSTRACT FROM AUTHOR]

Military, law enforcement, surveillance, leisure, scientific, and research have benefited from drones. Recent decades have seen considerable advances in aerial robot structure, working method, flying features, and navigation control, notably small UAVs and drones. Their use in civilized places needs regulation. Early covid products delivery and sanitization involved drones. This thorough analysis of UAV applications in numerous domains from respected journals and scientific reports during the past decade. Summary of UAV-based sanitization research inputs. This review helps inexperienced researchers evaluate studies. This concise review of materialistic and sustainable drone sanitization literature is useful for novice researchers and practitioners.

Abstract This paper evaluates the crucial role of unmanned aerial vehicles –UAV's- (or Drones) in the case of natural disasters response and humanitarian relief aid. The primary objective of this paper is to evaluate how unmanned aerial vehicles –UAV's- (or Drones) in the present or near future can help survivors in the case of a tsunami, earthquake, flooding, and any natural disaster. Initially, we assume that in any natural disaster always exist the high possibility of damage to the infrastructure, transportation systems, telecommunications systems access, and basic services immediately. This research proposes three areas the uses of unmanned aerial vehicles –UAV's- (or Drones) in the case of natural disasters response and humanitarian relief aid. These are (i) the aerial monitoring post-natural disaster damage evaluation, (ii) the natural disaster logistic and cargo delivery, (iii) the post-natural disaster aerial assessment. [ABSTRACT FROM AUTHOR]

Recent and ongoing technological developments make the application of unmanned aerial platforms increasingly accessible for archaeological research and heritage management. While the effectiveness of drones for documentation purposes of standing monuments and excavations has been amply demonstrated in recent years, there are also promising developments in their application for landscape archaeological projects. In this paper, the potential use of drones for the detection of subsurface archaeological remains in mountainous, Mediterranean landscapes is explored by presenting a case study in Molise, South Italy. In this rugged, Apennine area, traditional aerial archaeology approaches have in the past failed to yield good results as regards the detection and documentation of subsurface structures through crop marks. Recent experiments with low altitude, both vertical and oblique aerial photography using small, consumer friendly UAV's drones have, however, produced important and clearly readable information about the existence and extent of subsurface features in a series of sites in the Tappino Valley in Molise. This paper presents the first results of a case study of a complex rural site of the Classical-Roman period. Consequently, the paper discusses the potential value and feasibility of UAV's for archaeological research and cultural heritage management. In particular, the potential of the integration of UAV imagery in existing standard landscape archaeological research methods, such as field survey and geophysical prospection, is discussed. It is concluded that the targeted use of small remote controlled aerial platforms can significantly add to existing practices of both site-recognition and heritage management in the heavily threatened Mediterranean landscapes, and that it can be feasibly and efficiently integrated within standard methodologies applied in field survey projects. [ABSTRACT FROM AUTHOR]

The United States has accumulated an unequivocal ability to collect intelligence as a result of the technological advances of the 20th century. Numerous methods of collection have been employed in clandestine operations around the world including those that focus on human, signals, geospatial, and measurements and signals intelligence. An infatuation with technological methods of intelligence gathering has developed within many intelligence organizations, often leaving the age old practice of espionage as an afterthought. As a result of the focus on technical methods, some of the worst intelligence failures of the 20th century can be attributed to an absence of human intelligence. The 21st century has ushered in advances in technology have allowed UAVs to become the ultimate technical intelligence gathering platform; however human intelligence is still being neglected. The increasing reliance on UAVs will make the United States susceptible to intelligence failures unless human intelligence can be properly integrated. In the near future UAVs may be able to gather human level intelligence, but it will be a long time before classical espionage is a thing of the past. [ABSTRACT FROM AUTHOR]

• It reveals that crack growth in Grade 2, 3 and 4 Titanium can be approximated by the same master curve. • This master curve representation is R ratio independent. • It reveals that for Grade 3 Titanium this representation also holds for a range of different environments. • It reveals that this representation is similar to that of AA7050-T7451. • The durability analyses suggest that CP Titanium may be attractive for use as replacement parts. One of the challenges in aircraft sustainment is to develop additively manufactured (AM) replacement parts for legacy aircraft. This is particularly important for fixed and rotary wing aircraft that operate in in aggressive environments, i.e. off carriers, in a marine environment, etc. On the other hand the United States Air Force (USAF) have now adopted the concept of using AM to rapidly field limited-life unmanned air platforms. Whilst the temptation is to use AM Ti-6Al-4 V for these purposes, Ti-6Al-4 V powder is both costly and its supply is somewhat restricted. This paper reveals that the yield and ultimate strengths, the strain to failure of commercially pure (CP) Titanium, which is highly corrosion resistant, and it's resistance to crack growth is superior to that of the commonly used aluminium ally AA7050-T7451, which is used in the F/A-18 Hornet, Super Hornet and F-35 (Joint Strike Fighter). Interestingly, when allowance is made for these improved properties then, if the crack growth rate da/dN is expressed as per the Hartman-Schijve crack growth equation, the resultant crack growth curves for Grade 2, 3 and 4 Titanium, and AA7050-T7451 all fall onto (essentially) the same master curve. It is also shown that the effect of different aggressive environments on Grade 3 Titanium is merely to change the fatigue threshold and that, when allowance is made for this, the crack growth curves associated with these different environments also fall onto the same master curve determined for CP Titanium and AA7050-T7451 tested in a laboratory air environment. Consequently, the damage tolerance and durability analyses presented in this paper suggest that CP Titanium may be attractive both for use as replacement parts for many aircraft parts, and for unmanned aerial vehicles (UAV's). [ABSTRACT FROM AUTHOR]