Modeling and Validation of a Navy A6-Intruder Actively Controlled Landing Gear System PDF Download
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Author: National Aeronautics and Space Administration (NASA) Publisher: Createspace Independent Publishing Platform ISBN: 9781720627647 Category : Languages : en Pages : 32
Book Description
Concepts for long-range air travel are characterized by airframe designs with long, slender, relatively flexible fuselages. One aspect often overlooked is ground-induced vibration of these aircraft. This paper presents an analytical and experimental study of reducing ground-induced aircraft vibration loads by using actively controlled landing gear. A facility has been developed to test various active landing gear control concepts and their performance, The facility uses a Navy A6 Intruder landing gear fitted with an auxiliary hydraulic supply electronically controlled by servo valves. An analytical model of the gear is presented, including modifications to actuate the gear externally, and test data are used to validate the model. The control design is described and closed-loop test and analysis comparisons are presented.Horta, Lucas G. and Daugherty, Robert H. and Martinson, Veloria J.Langley Research CenterACTIVE CONTROL; CONTROL THEORY; LANDING GEAR; SERVOMECHANISMS; VALVES; VIBRATION; MATHEMATICAL MODELS; CONTROL SYSTEMS DESIGN; DYNAMIC CONTROL; DYNAMIC TESTS; AIRCRAFT TIRES; FUSELAGES; LAPLACE TRANSFORMATION; EQUATIONS OF MOTION
Author: National Aeronautics and Space Administration (NASA) Publisher: Createspace Independent Publishing Platform ISBN: 9781720627647 Category : Languages : en Pages : 32
Book Description
Concepts for long-range air travel are characterized by airframe designs with long, slender, relatively flexible fuselages. One aspect often overlooked is ground-induced vibration of these aircraft. This paper presents an analytical and experimental study of reducing ground-induced aircraft vibration loads by using actively controlled landing gear. A facility has been developed to test various active landing gear control concepts and their performance, The facility uses a Navy A6 Intruder landing gear fitted with an auxiliary hydraulic supply electronically controlled by servo valves. An analytical model of the gear is presented, including modifications to actuate the gear externally, and test data are used to validate the model. The control design is described and closed-loop test and analysis comparisons are presented.Horta, Lucas G. and Daugherty, Robert H. and Martinson, Veloria J.Langley Research CenterACTIVE CONTROL; CONTROL THEORY; LANDING GEAR; SERVOMECHANISMS; VALVES; VIBRATION; MATHEMATICAL MODELS; CONTROL SYSTEMS DESIGN; DYNAMIC CONTROL; DYNAMIC TESTS; AIRCRAFT TIRES; FUSELAGES; LAPLACE TRANSFORMATION; EQUATIONS OF MOTION
Author: Lucas G. Horta Publisher: ISBN: Category : Airplanes Languages : en Pages : 36
Book Description
Concepts for long-range air travel are characterized by airframe designs with long, slender, relatively flexible fuselages. One aspect often overlooked is ground-induced vibration of these aircraft. This paper presents an analytical and experimental study of reducing ground-induced aircraft vibration loads by using actively controlled landing gear. A facility has been developed to test various active landing gear control concepts and their performance. The facility uses a Navy A6 Intruder landing gear fitted with an auxiliary hydraulic supply electronically controlled by servo valves. An analytical model of the gear is presented, including modifications to actuate the gear externally, and test data are used to validate the model. The control design is described and closed-loop test and analysis comparisons are presented.
Author: Kari T. Koskinen Publisher: Springer ISBN: 3319270648 Category : Technology & Engineering Languages : en Pages : 672
Book Description
This book comprises refereed papers from the 10th World Congress on Engineering Asset Management (WCEAM 2015), held in Tampere, Finland in September 2015. These proceedings include a compilation of state-of-the-art papers covering a comprehensive range of subjects equally relevant to business managers and engineering professionals alike. With a focus on various aspects of engineering asset management ranging from strategic level issues to detail-level machine health issues, these papers address both industry and public sector concerns and issues, as well as advanced academic research. Proceedings of the WCEAM 2015 is an excellent reference and resource for asset management practitioners, researchers and academics, as well as undergraduate and postgraduate students at tertiary institutions or in the industry.
Author: Norman S. Currey Publisher: AIAA ISBN: 9781600860188 Category : Airplanes Languages : en Pages : 394
Book Description
This is the only book available today that covers military and commercial aircraft landing gear design. It is a comprehensive text that will lead students and engineers from the initial concepts of landing gear design through final detail design. The book provides a vital link in landing gear design technology from historical practices to modern design trends, and it considers the necessary airfield interface with landing gear design. The text is backed up by calculations, specifications, references, working examples.
Author: Nancy G. Leveson Publisher: MIT Press ISBN: 0262297302 Category : Science Languages : en Pages : 555
Book Description
A new approach to safety, based on systems thinking, that is more effective, less costly, and easier to use than current techniques. Engineering has experienced a technological revolution, but the basic engineering techniques applied in safety and reliability engineering, created in a simpler, analog world, have changed very little over the years. In this groundbreaking book, Nancy Leveson proposes a new approach to safety—more suited to today's complex, sociotechnical, software-intensive world—based on modern systems thinking and systems theory. Revisiting and updating ideas pioneered by 1950s aerospace engineers in their System Safety concept, and testing her new model extensively on real-world examples, Leveson has created a new approach to safety that is more effective, less expensive, and easier to use than current techniques. Arguing that traditional models of causality are inadequate, Leveson presents a new, extended model of causation (Systems-Theoretic Accident Model and Processes, or STAMP), then shows how the new model can be used to create techniques for system safety engineering, including accident analysis, hazard analysis, system design, safety in operations, and management of safety-critical systems. She applies the new techniques to real-world events including the friendly-fire loss of a U.S. Blackhawk helicopter in the first Gulf War; the Vioxx recall; the U.S. Navy SUBSAFE program; and the bacterial contamination of a public water supply in a Canadian town. Leveson's approach is relevant even beyond safety engineering, offering techniques for “reengineering” any large sociotechnical system to improve safety and manage risk.
Author: Timothy M. Laur Publisher: Berkley Trade ISBN: 9780425164372 Category : Military weapons Languages : en Pages : 0
Book Description
An accessible encyclopedia of military weapons represents a collaboration with The Army, Navy, and Air Force Times, and covers each weapon system, its evolution, development, and combat experience.
Author: National Aeronautics and Space Administration (NASA)
Author: National Aeronautics and Space Administration (NASA)
Author: Lucas G. Horta
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Author: Kari T. Koskinen
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Author: Norman S. Currey
Author: Nancy G. Leveson
Author: Timothy M. Laur