6 results on '"Mccue, Leigh S."'
Search Results
2. Work-in-Progress: Development of a new hands-on STEM program for biologically inspired maritime robotics.
- Author
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Mccue, Leigh S., Hagarty, Adrian, Nowzari, Cameron, Raz, Ali Khalid, Rosenberg, Jessica, Shishika, Daigo, Smith, Cynthia, Riggi, Michael Vincenzo, and Nelson, Jill K.
- Subjects
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STEM education , *OUTREACH programs , *REMOTE submersibles , *ROBOT design & construction , *ENGINEERING students - Abstract
This paper documents the work-in-progress to develop a STEM outreach program providing 9th-12th grade high-school aged learners with an introduction to biologically inspired underwater robotics using lighter-than-air (LTA) vehicles. This work includes prototype kit development targeting a comparable cost per kit as SeaPerch ($179) and SeaGlide ($249) and instructional materials comprised of demonstration videos and standards-aligned written curricular content to facilitate classroom implementation. LTA vehicles are utilized specifically for their unique ability to demonstrate fundamental concepts applicable to both aircraft and underwater vehicles including structural analysis, aerodynamics and hydrodynamics, biologically inspired propulsion, systems engineering, and swarm dynamics, without requiring student access to pools or other bodies of water. Of modern naval relevance, LTA vehicles provide an opportunity to demonstrate key concepts applicable to submarine design without dependence on access to water. The Naval Research and Development Framework and corresponding Addendum speaks to the need for "[u]ndersea dominance...as the Navy designs and build the next generation of strategic and tactical submarines" including "[e]xpanded use of autonomous undersea vehicles..." [1]. Furthermore, the Addendum's Integrated Research Portfolio on Warfighter Supremacy speaks to training and education as well as development of biologically inspired autonomous systems. Current interest in biologically inspired vehicles is documented in the Navy's proposed FY22 budget [2]. Handson robotics activities using LTA platforms provide a novel opportunity to develop the future naval workforce by promoting interest and learning in underwater and unmanned systems without the need for access to a pool or lake to test in. This paper documents work-in-progress to develop a SeaPerch-inspired educational kit. The kit will include three hulls - balloons to be filled with helium in shapes that idealize the shapes of sea creatures: a hemisphere to emulate a jellyfish, an ellipsoid to emulate a tuna, and a flying wing to emulate a ray. Both propeller and flapping propulsion options will be provided to expose learners to traditionally and biologically-inspired propulsors. By using idealized geometries, fundamentals of aero/hydrodynamics like added mass effects that are often ignored because they are relatively small for aircraft but of relevance for submarines and LTA vehicles can be demonstrated. Navy supported STEM programming such as SeaPerch, and more recently SeaGlide, have been enormously successful for fostering an interest in engineering and robotics with participants in all 50 states and 35 countries with growth from 22 regional SeaPerch competitions in 2014 to 89 regional competitions in 2018 [4]. The SeaPerch kit-based structure has proven pivotal for widespread adoption, though access to water is a barrier. The described activities take a logical step in kit-based naval STEM outreach activities, without the constraint of water, and targeting high-school aged learners. [ABSTRACT FROM AUTHOR]
- Published
- 2022
3. Design wave elevations leading to extreme roll motion
- Author
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Alford, Laura K., Troesch, Armin W., and McCue, Leigh S.
- Published
- 2006
- Full Text
- View/download PDF
4. Implementing and Integrating an Engineering Video Game into a Variety of Educational Contexts.
- Author
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Briscoe, Michael, McCue, Leigh S., and Lumme, Dale A.
- Abstract
Future Leaders in Experience-based Engineering & Technology (FLEET) engages students in the engineering design process through the gamification of shipbuilding. This program is funded by the Office of Naval Research so all program components (software, curriculum, etc.) are free, and yet we encountered challenges that required adaptation to the implementation strategies as we gathered more user feedback through early roll-out phases. Initial formal and informal data collection efforts showed that students were engaging with the video game, but we could see through informal data collection that students were not actively connecting science concepts and vocabulary. Key instructional strategies were developed to move students from a gaming mindset to a STEM mindset. These approaches are formalized in middle- and high-school curricula that align to states' science and reading standards. The curricula first require students to work collaboratively and establish their own engineering process. Initial survey data shows that after engaging with the FLEET curriculum, students' interest in STEM careers increases and they find their STEM experiences beneficial. Further development and research efforts are explained. [ABSTRACT FROM AUTHOR]
- Published
- 2019
5. Modal Analysis of the Ice-Structure Interaction Problem.
- Author
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Venturella, Michael A., Patil, Mayuresh J., and McCue, Leigh S.
- Subjects
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ICE mechanics , *MODAL analysis , *STRUCTURAL dynamics , *STRUCTURAL analysis (Engineering) , *RESONANT vibration - Abstract
In this paper the authors present a multimode ice-structure interaction model based on the single degree of freedom ice-structure interaction model initially proposed by Matlock et al. (1969, "A Model for the Prediction of Ice-Structure Interaction," Proceedings of the First Offshore Technology Conference, Houston, TX, Vol. 1, pp. 687-694, Paper No. OTC 1066; 1971, "Analytical Model for Ice Structure Interaction," ASCE Journal of the Engineering Mechanics Division, EM4, pp. 1083-1092). The model created by Matlock et al. assumed that the primary response of the structure would be in its fundamental mode of vibration. In order to glean a greater physical understanding of the ice-structure interaction phenomena, it was critical that this study set out to develop a multimode forced response for the pier when a moving ice floe makes contact at a specific vertical pier location. Modal analysis is used in this study, in which the response of each mode is superposed to find the complete modal response of the entire length of a pier subject to incremental ice loading. This incremental ice loading includes ice fracture points as well as loss of contact between ice and structure. In the work of Matlock et al., the physical system is a bottom supported pier modeled as a cantilever beam. Realistic conditions such as ice accumulation on the pier modeled as a point mass and uncertainties in the ice characteristics are introduced in order to provide a stochastic response. The impact of number of modes in modeling is studied as well as dynamics due to fluctuations of ice impact height as a result of typical tidal fluctuations. A Poincaré based analysis following on the research of Karr et al. (1992, "Nonlinear Dynamic Response of a Simple Ice-Structure Interaction Model," Proceedings of the 11th International Conference of Offshore Mechanics and Arctic Engineering, Vol. 4, pp. 231-237) is employed to identify any periodic behavior of the low and high velocity ice system responses. Recurrence plotting is also utilized to further define any existing structure of the ice-structure interaction time series for low and high speed ice floes. While the Matlock model on which this research is based is admittedly simplistic, the intention of this work is to provide a foundation for future work using time series analysis and modal analysis on more sophisticated models coupling multiple piers and connecting structure for a comprehensive ice-wind-structural dynamics model. [ABSTRACT FROM AUTHOR]
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- 2011
- Full Text
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6. Improved prediction of the threshold of surf-riding of a ship in steep following seas
- Author
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Wu, Wan, Spyrou, Kostas J., and McCue, Leigh S.
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SURFING , *BIFURCATION theory , *BROACHING , *COMPUTER simulation , *NAVAL architecture , *DAMPING (Mechanics) , *FORCING (Model theory) , *OCEAN engineering - Abstract
Abstract: An extended version of Melnikov''s method is implemented in order to predict more accurately the threshold of global surf-riding for a ship operating in steep following seas. The key advantage of the proposed method is that it overcomes the limitation of small damping and/or small forcing that are intrinsic to the implementation of the standard Melnikov''s method. A reference ITTC ship is used here by way of example and the result is compared to that obtained from standard analysis as well as numerical simulations. Because of the primary drawback of the extended Melnikov''s method is the inability to arrive at a closed form equation, in this work the authors arrive at a “best fit” approximation to the extended Melnikov numerically predicted result. [Copyright &y& Elsevier]
- Published
- 2010
- Full Text
- View/download PDF
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