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The air refueling receiver that does not complainStephenson, Jeffrey L. January 1900 (has links)
Thesis--School of Advanced Airpower Studies, Maxwell Air Force Base, Ala., 1997-98. / Title from title screen (viewed Nov. 5, 2003). "October 1999." Includes bibliographical references.
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Design and implementation of a GPS-based navigation system for micro air vehiclesKanowitz, Scott M. January 2002 (has links)
Thesis (M.S.)--University of Florida, 2002. / Title from title page of source document. Document formatted into pages; contains vi, 41 p.; also contains graphics. Includes vita. Includes bibliographical references.
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A decision model for predicting the cost of aluminum airframe detail partsSpanton, Donald Leslie 08 1900 (has links)
No description available.
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Introduction of a tiltrotor aircraft service to the Atlanta air transportation marketMeyer, Stephen A. 08 1900 (has links)
No description available.
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The design and development of a modular avionics systemKahn, Aaron David 05 1900 (has links)
No description available.
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Engine modeling, control, and synchronization for an unmanned aerial vehicleHelmick, Daniel Martin 12 1900 (has links)
No description available.
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Limit analysis of cylinder-cylinder intersectionsErbatur, F. January 1972 (has links)
No description available.
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Structural health monitoring of aircraft structures: development of a phased array system.Rocha, Bruno Filipe Ferreira Graca 17 October 2011 (has links)
This work consisted in the research and development of a phased array embedded
system for Structural Health Monitoring (SHM) of aircraft structures. This system is
based on piezoelectric (PZT) transducers to excite fast propagating first symmetric Lamb
wave mode (S0) wavefronts. The intent of this research is to contribute for an increasing
safety and efficient operation of aircraft.
Currently applied ultrasound inspections to aircraft structures in operation, as a
conventional Non Destructive Tests and Evaluations (NDT&E) technique, were
reviewed. Such and the previous development of a Lamb wave based SHM system using
PZT transducers in a network configuration served as the basis and for comparison to the
phased array SHM system developed. Lamb waves’ propagation behaviour was carefully
analyzed and a linear PZT phased array SHM system was developed and experimentally
tested. The PZT phased array was applied to representative aircraft structural aluminum
panels, considering also the existence of structural reinforcements and joints. New
techniques, hardware and software, leading to automated damage detection and location,
were researched, developed and implemented.
Tests for damage detection and location were performed, with the introduction of
damages into the specimens being simulated by surface and through the thickness holes
and cuts. Damages with a maximum dimension of 1mm applied cumulatively to the
specimens subject to different boundary conditions were successfully detected and
located. / Graduate
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Study of forces and moments on wing-bodies at high incidenceJohnson, G. A. January 1987 (has links)
No description available.
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Evolutionary decomposition of complex design spacesBonham, Christopher Richard January 2000 (has links)
This dissertation investigates the support of conceptual engineering design through the decomposition of multi-dimensional search spaces into regions of high performance. Such decomposition helps the designer identify optimal design directions by the elimination of infeasible or undesirable regions within the search space. Moreover, high levels of interaction between the designer and the model increases overall domain knowledge and significantly reduces uncertainty relating to the design task at hand. The aim of the research is to develop the archetypal Cluster Oriented Genetic Algorithm (COGA) which achieves search space decomposition by using variable mutation (vmCOGA) to promote diverse search and an Adaptive Filter (AF) to extract solutions of high performance [Parmee 1996a, 1996b]. Since COGAs are primarily used to decompose design domains of unknown nature within a real-time environment, the elimination of apriori knowledge, speed and robustness are paramount. Furthermore COGA should promote the in-depth exploration of the entire search space, sampling all optima and the surrounding areas. Finally any proposed system should allow for trouble free integration within a Graphical User Interface environment. The replacement of the variable mutation strategy with a number of algorithms which increase search space sampling are investigated. Utility is then increased by incorporating a control mechanism that maintains optimal performance by adapting each algorithm throughout search by means of a feedback measure based upon population convergence. Robustness is greatly improved by modifying the Adaptive Filter through the introduction of a process that ensures more accurate modelling of the evolving population. The performance of each prospective algorithm is assessed upon a suite of two-dimensional test functions using a set of novel performance metrics. A six dimensional test function is also developed where the areas of high performance are explicitly known, thus allowing for evaluation under conditions of increased dimensionality. Further complexity is introduced by two real world models described by both continuous and discrete parameters. These relate to the design of conceptual airframes and cooling hole geometries within a gas turbine. Results are promising and indicate significant improvement over the vmCOGA in terms of all desired criteria. This further supports the utilisation of COGA as a decision support tool during the conceptual phase of design.
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