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Book Application of Unsteady Aerodynamic Methods for Transonic Aeroelastic Analysis

Download or read book Application of Unsteady Aerodynamic Methods for Transonic Aeroelastic Analysis written by and published by . This book was released on 1988 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Application of Approximate Unsteady Aerodynamics for Flutter Analysis

Download or read book Application of Approximate Unsteady Aerodynamics for Flutter Analysis written by Nasa Technical Reports Server (Ntrs) and published by BiblioGov. This book was released on 2013-07 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A technique for approximating the modal aerodynamic influence coefficient (AIC) matrices by using basis functions has been developed. A process for using the resulting approximated modal AIC matrix in aeroelastic analysis has also been developed. The method requires the unsteady aerodynamics in frequency domain, and this methodology can be applied to the unsteady subsonic, transonic, and supersonic aerodynamics. The flutter solution can be found by the classic methods, such as rational function approximation, k, p-k, p, root locus et cetera. The unsteady aeroelastic analysis using unsteady subsonic aerodynamic approximation is demonstrated herein. The technique presented is shown to offer consistent flutter speed prediction on an aerostructures test wing (ATW) 2 and a hybrid wing body (HWB) type of vehicle configuration with negligible loss in precision. This method computes AICs that are functions of the changing parameters being studied and are generated within minutes of CPU time instead of hours. These results may have practical application in parametric flutter analyses as well as more efficient multidisciplinary design and optimization studies.

Book Future Research on Transonic Unsteady Aerodynamics and Its Aeroelastic Applications

Download or read book Future Research on Transonic Unsteady Aerodynamics and Its Aeroelastic Applications written by ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (France) and published by . This book was released on 1987 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Workshop focused on strategies for promoting and developing engineering-level transonic flutter prediction techniques. The technology of transonic aerodynamics is currently undergoing rapid development. Significant progress is being made to solve the inherently nonlinear equations describing unsteady motions of wings in transonic flow, while the availability of reliable and efficient computational methods will greatly enhance the ability to predict the aeroelastic behaviour of modern aircraft operating under transonic flow conditions. AGARD-SMP has previously coordinated unsteady aerodynamic research carried out on a number of standard wind tunnel model configurations and published the results. The proposals contained in the Evaluation Report (W.J. Mykytow) on the Fall 1984 Structures and Materials Panel Specialists' Meeting on Transonic Unsteady Aerodynamics, together with an expanded range of aeroelastic configurations, formed the guidelines which this Workshop followed.

Book Aeroservoelasticity

Download or read book Aeroservoelasticity written by Ashish Tewari and published by Springer. This book was released on 2015-03-24 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Book Future Research on Transonic Unsteady Aerodynamics and Its Aeroelastic Applications

Download or read book Future Research on Transonic Unsteady Aerodynamics and Its Aeroelastic Applications written by Organisation du traité de l'Atlantique Nord. Groupe consultatif pour la recherche et le développement aérospatial. Structures and Materials Panel. Meeting and published by . This book was released on 1987 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Introduction to Unsteady Aerodynamics and Dynamic Aeroelasticity

Download or read book Introduction to Unsteady Aerodynamics and Dynamic Aeroelasticity written by Luciano Demasi and published by Springer Nature. This book was released on with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Unsteady Transonic Aerodynamics

Download or read book Unsteady Transonic Aerodynamics written by David Nixon and published by . This book was released on 1989 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume complements Transonic aerodynamics (v.81 in the series) which is concerned with steady flow. This is the only book to address the subject of unsteady transonic aerodynamics, a field much different from steady aerodynamics. The most pronounced difference is the complex shock wave motions

Book Computational Unsteady Aerodynamics for Aeroelastic Analysis

Download or read book Computational Unsteady Aerodynamics for Aeroelastic Analysis written by and published by . This book was released on 1987 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Recent Advances in Transonic Computational Aeroelasticity

Download or read book Recent Advances in Transonic Computational Aeroelasticity written by and published by . This book was released on 1988 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book CFD Methods Development Considerations for Unsteady Aerodynamic Analysis

Download or read book CFD Methods Development Considerations for Unsteady Aerodynamic Analysis written by and published by . This book was released on 1992 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: