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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 332
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 332
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Author:
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ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 742
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Category : Government publications
Languages : en
Pages :
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ISBN:
Category : Government publications
Languages : en
Pages : 1038
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Author: William M. Adams (Jr.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 48
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Author:
Publisher:
ISBN:
Category : Aeroelasticity
Languages : en
Pages : 460
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Book Description
These proceedings represent a collection of the latest advances in aeroelasticity and structural dynamics from the world community. Research in the areas of unsteady aerodynamics and aeroelasticity, structural modeling and optimazation, active control and adaptive structures, landing dynamics, certification and qualification, and validation testing are highlighted in the collection of papers. The wide range of results will lead to advances in the prediction and control of the structural response of aircraft and spacecraft.
Author: Ashish Tewari
Publisher: Springer
ISBN: 1493923684
Category : Mathematics
Languages : en
Pages : 323
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This monograph presents the state of the art in aeroservoelastic (ASE) modeling and analysis and develops a systematic theoretical and computational framework for use by researchers and practicing engineers. It is the first book to focus on the mathematical modeling of structural dynamics, unsteady aerodynamics, and control systems to evolve a generic procedure to be applied for ASE synthesis. Existing robust, nonlinear, and adaptive control methodology is applied and extended to some interesting ASE problems, such as transonic flutter and buffet, post-stall buffet and maneuvers, and flapping flexible wing. The author derives a general aeroservoelastic plant via the finite-element structural dynamic model, unsteady aerodynamic models for various regimes in the frequency domain, and the associated state-space model by rational function approximations. For more advanced models, the full-potential, Euler, and Navier-Stokes methods for treating transonic and separated flows are also briefly addressed. Essential ASE controller design and analysis techniques are introduced to the reader, and an introduction to robust control-law design methods of LQG/LTR and H2/H∞ synthesis is followed by a brief coverage of nonlinear control techniques of describing functions and Lyapunov functions. Practical and realistic aeroservoelastic application examples derived from actual experiments are included throughout. Aeroservoelasiticity fills an important gap in the aerospace engineering literature and will be a valuable guide for graduate students and advanced researchers in aerospace engineering, as well as professional engineers, technicians, and test pilots in the aircraft industry and laboratories.
Author:
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Category : Airplanes
Languages : en
Pages : 20
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This report describes strain-gage calibration loading through the application of known loads of the Active Aeroelastic Wing F/A-18 airplane. The primary goal of this test is to produce a database suitable for deriving load equations for left and right wing root and fold shear; bending moment; torque; and all eight wing control-surface hinge moments. A secondary goal is to produce a database of wing deflections mesured by string potentiometers and the onboard flight deflection measurement system. Another goal is to produce strain-gage data through both the laboratory data acquisition system and the onboard aircraft data system as a check of the aircraft system. Thirty-two hydraulic jacks have applied loads through whiffletrees to 104 tension-compression load pads bonded to the lower wing surfaces. The load pads covered approximately 60 percent of the lower wing surface.
Author:
Publisher:
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Category : Aeronautics
Languages : en
Pages : 538
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Author: Sherwood Tiffany Hoadley
Publisher:
ISBN:
Category : Aeroelasticity
Languages : en
Pages : 24
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