Modeling and Validation of a Navy A6-Intruder Actively Controlled Landing Gear System PDF Download
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Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781723743276
Category : Science
Languages : en
Pages : 34
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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 Adm Nasa
Publisher: Independently Published
ISBN: 9781723743276
Category : Science
Languages : en
Pages : 34
Get Book Here
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
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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:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 182
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Book Description
Author: Kari T. Koskinen
Publisher: Springer
ISBN: 3319270648
Category : Technology & Engineering
Languages : en
Pages : 672
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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:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 446
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Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 148
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1042
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Book Description
Author: Norman S. Currey
Publisher: AIAA
ISBN: 9781600860188
Category : Airplanes
Languages : en
Pages : 394
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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
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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: Mike Tooley
Publisher: Routledge
ISBN: 1135052816
Category : Technology & Engineering
Languages : en
Pages : 277
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Book Description
An introduction to the principles of aircraft digital and electronic systems, this book is written for anyone pursuing a career in aircraft maintenance engineering or a related aerospace engineering discipline. Suitable for those studying towards licensed aircraft maintenance engineer status as part of an EASA Part-66 or FAR-147 approved course, or those taking Aerospace Engineering City & Guilds modules, EDEXCEL National Units, EDEXCEL Higher National Units or a Degree in aircraft engineering.
