Download or read book Examples of Static Aeroelastic Effects on Present Combat Aircraft Projects written by W. E. Sharpe and published by . This book was released on 1986 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The paper first describes results of static aeroelastic calculations for a recent canard/cranked delta fighter project, in which a complete aircraft aerodynamic and structural model is used to demonstrate full-interacted 'free' aircraft deflection modes and resulting stability effects. The significance of these results is illustrated by comparison with corresponding 'fixed root' calculations, thereby indicating a requirement for complete aircraft aeroelastic modelling at the earliest possible stage in project design. Aeroelastic modelling of external stores in the context of store/aircraft integration is also discussed. Finally, the correction of high-speed wind-tunnel model results for aeroelastic distortion is addressed, indicating those parameters which are likely to be significantly affected.
Download or read book Static Aeroelasticity in Combat Aircraft written by and published by . This book was released on 1986 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Analysis of the Effects of Aeroelasticity on Static Longitudinal Stability and Control of a Swept back wing Airplane written by Richard B. Skoog and published by . This book was released on 1951 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Static Aeroelastic Analysis for Generic Configuration Aircraft written by In Lee and published by . This book was released on 1987 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermal Effects on Static Aeroelastic Stability and Control sup Description and results of tests conducted to determine the thermally affected behavior of corrugated multiweb wing structures by J F Quinn written by Bell Aircraft Corp and published by . This book was released on 1959 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Static Aeroelastic Effects on High Performance Aircraft written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Static Aeroelasticity in the Design of Modern Fighters written by E. G Wilson (Jr) and published by . This book was released on 1986 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Static aeroelastic effects are manifested in the form of changes in the total load or lift on the aircraft, or in changes in the overall distribution of load or lift. These changes affect the structural integrity of the vehicle, its static stability, the effectiveness of various control surfaces, and the overall flight performance. The characteristics and magnitude of these aeroelastic effects are dependent on the aerodynamic shape of the vehicle, the structural orientation, the structural stiffness, and the particular flight condition in terms primarily of Mach number and dynamic pressure. A review of fighter aircraft development programs over the past 30 years indicates a trend of increasing emphasis on the consideration of static aeroelastic effects. While early concerns addressed only the impact on air vehicle structural integrity, current design philosophy recognizes and addresses aeroelasticity as a primary design parameter affecting structural optimization, vehicle aerodynamic stability, control effectiveness, and overall performance. Examples from wind tunnel testing, analytical studies and operational aircraft applications are presented to justify this emphasis illustrate current methodology and analysis techniques, and make a case for an integrated approach to the consideration of static aeroelastic effects at all stages of the design process.
Download or read book Static Aeroelastic Effects on High Performance Aircraft written by ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRAN CE) and published by . This book was released on 1987 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern high performance aircraft designs tend to employ very thin airfoils having a degree and a distribution of stiffness far from the ideal; in consequence, there is a loss of control effectiveness and maneuverability. Moreover, the introduction of the highly forward-swept-wing planform poses a static aeroelastic effect of fundamental importance; these effects are felt at model as well as at full scale. This meeting was organized not only to review instances of these problems but to see how successfully modern tools for structural and aeroelastic analysis can be applied. The individual papers of the meeting cover many aspects of static aeroelasticity not only for military aircraft but also for modern transport aircraft. The various papers also address problems and recent progress in wind tunnel model testing, in particular measurement of static deformations on wind tunnel models. Keywords: Flutter, Supercritical wings, Aerodynamic loading, Jet fighters, Aerodynamic trim, Symposia, Maneuverability, Sweptforward wings, Aeroelasticity, Aerostatics, Structural analysis, Military aircraft, Transport aircraft, Wind tunnel models.
Download or read book Static Aeroelastic Effects of Formation Flight for Slender Unswept Wings written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2019-01-13 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The static aeroelastic equilibrium equations for slender, straight wings are modified to incorporate the effects of aerodynamically-coupled formation flight. A system of equations is developed by applying trim constraints and is solved for component lift distribution, trim angle-of-attack, and trim aileron deflection. The trim values are then used to calculate the elastic twist distribution of the wing box. This system of equations is applied to a formation of two gliders in trimmed flight. Structural and aerodynamic properties are assumed for the gliders, and solutions are calculated for flexible and rigid wings in solo and formation flight. It is shown for a sample application of two gliders in formation flight, that formation disturbances produce greater twist in the wingtip immersed in the vortex than for either the opposing wingtip or the wings of a similar airplane in solo flight. Changes in the lift distribution, resulting from wing twist, increase the performance benefits of formation flight. A flexible wing in formation flight will require greater aileron deflection to achieve roll trim than a rigid wing. Hanson, Curtis E. Armstrong Flight Research Center NASA/TM-2009-214649, H-2980, DFRC-988
Download or read book Static Aeroelasticity of Combat Aircraft written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Structures and Materials Panel and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Secondary Considerations of Static Aeroelastic Effects on High Performance Aircraft written by William P. Rodden and published by . This book was released on 1986 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Secondary effects in static aeroelasticity that heretofore have been regarded as negligble include: redistribution of induced drag; dihedral effect under load factor; structural axis rotations in equations of motion; aeroelastic divergence of an unrestrained vehicle; and corrections to measurements on 'rigid' wind tunnel model. The few publications on these topics that have appeared over the years are surveyed on the assumption that secondary effects on earlier designs may have become primary effects of future configurations.
Download or read book The Teamsters Strike written by Jean Cowgill and published by . This book was released on 1905 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Static Aeroelastic Analysis of Fighter Aircraft Using a Three dimensional Navier Stokes Algorithm written by D. Schuster and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Static aeroelasticity effects on high performance aircraft written by Office National D'Etudes et de Recherches Aerospatiales and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Active Aeroelastic Aircraft and Its Impact on Structure and Flight Control Systems Design written by Johannes Schweiger and published by . This book was released on 2000 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Active aeroelastic concepts have been proposed for several years now. Their common incentive are improvements of aircraft performance and stability by the intentional use of aeroelastic effects. This means that the basic flexibility characteristics of a new aircraft project must be included in the early conceptual design process, and the structural and flight control system design must be coupled very closely. The knowledge about the magnitude of aeroelastic impacts on aerodynamic forces and aircraft stability is still very limited within the community of people involved in aeronautical engineering - even among the specialists in aeroelasticity. For a successful application of active aeroelastic concepts, their proper identification is therefore the first step. It will be shown for some selected examples, which static aeroelastic effects are usually very important for conventional designs, and how they can be made even more effective in a positive sense for future designs. The accuracy and proper use of aeroelastic prediction methods and analysis models is addressed briefly in the context of interactions with other disciplines, and ideas are developed for the multi-disciplinary design process of active aeroelastic aircraft concepts. Whereas static aeroelastic effects usually only become important with increasing airspeed, a concept will be demonstrated for aeroelastic improvements, which also works at low speeds.
Download or read book The Formulation of an Influence coefficient Method for Determining Static Aeroelastic Effects written by A. S. Taylor and published by . This book was released on 1969 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book STATIC AEROELASTICITY IN COMBAT AIRCRAFT written by NATO. ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT. and published by . This book was released on with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
