Flutter Analysis Of Rectangular Wings Of Very Low Aspect Ratio

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Flutter Analysis Of Rectangular Wings Of Very Low Aspect Ratio

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Author : Robert William Fralich
language : en
Publisher:
Release Date : 1958

Flutter Analysis Of Rectangular Wings Of Very Low Aspect Ratio written by Robert William Fralich and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1958 with Aerofoils categories.

A flutter analysis, employing slender-body aerodynamic theory and thin-plate theory, is made for rectangular wings of very low aspect ratio with a constant thickness. The spanwise variation of wing deflection is assumed to be given by a parabola, and the chordwise variation is allowed complete freedom. The results show the vsriation of flutter speed and male shape with aspect ratio. Comparisons are made with additional resuits obtained by approximating the chordwise deflection shape by use of parabolic or cubic curves. The analysis shows that the cubic approximation gives good resuits for a ratio of chord to semispan less than 3.

Flutter Of A Low Aspect Ratio Rectangular Wing

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Author : Stanley R. Cole
language : en
Publisher:
Release Date : 1989

Flutter Of A Low Aspect Ratio Rectangular Wing written by Stanley R. Cole and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Airplanes categories.

Flutter And Divergence Of Rectangular Wings Of Very Low Aspect Ratio

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Author : Robert W. Fralich
language : en
Publisher:
Release Date : 1957

Flutter And Divergence Of Rectangular Wings Of Very Low Aspect Ratio written by Robert W. Fralich and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1957 with categories.

Formulation Of A Structural Model For Flutter Analysis Of Low Aspect Ratio Composite Aircraft Wings

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Author : Timothy J. Seitz
language : en
Publisher:
Release Date : 1992

Formulation Of A Structural Model For Flutter Analysis Of Low Aspect Ratio Composite Aircraft Wings written by Timothy J. Seitz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Airplanes categories.

Flutter At Very High Speeds

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Author : Harry L. Runyan
language : en
Publisher:
Release Date : 1957

Flutter At Very High Speeds written by Harry L. Runyan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1957 with Aerodynamic heating categories.

This paper is concerned with a discussion of some of the problems of flutter and aeroelasticity that are or may be important at high speeds. Various theoretical procedures for treating high Mach number flutter are reviewed. Application of two of these methods, namely, the Van Dyke method and piston-theory method, is made to a specific example and compared with linear two- and three-dimensional results. It is shown that the effects of thickness and airfoil shape are destabilizing as compared with linear theory at high Mach number. In order to demonstrate the validity of these large predicted effects, experimental flutter results are shown for two rectangular wings at Mach numbers of 6.86 and 3. The results of nonlinear piston-theory calculations were in good agreement with experiment, whereas the results of using two- and three-dimensional linear theory were not. In addition, some results demonstrating the importance of including camber modes in a flutter analysis are shown, as well as a discussion of one case of flutter due to aerodynamic heating.

Relationship Between Flutter Parameters And Generalized Aerodynamic Forces For Wings Of Low Aspect Ratio

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Author : Bernard Mazelsky
language : en
Publisher:
Release Date : 1962

Relationship Between Flutter Parameters And Generalized Aerodynamic Forces For Wings Of Low Aspect Ratio written by Bernard Mazelsky and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Aerodynamics, Hypersonic categories.

A set of closed-form approximations is derived which relates the flutter conditions of a wing to its generalized aerodynamic forces. A simplified two-mode analysis is used to obtain a firstorder approximation. More general analyses are performed by treating additional effects as perturbations. The derivations are applicable to a wide class of low-aspect-ratio wings and apply to subsonic, transonic, supersonic, and hypersonic flow.

Flutter Of Low Aspect Ratio Wings Calculation Of Pressure Distribution For Oscillating Wings Of Arbitrary Planform In Subsonic Flow By The Kernel Function Methods By Pao Tan Hsu

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Author : Massachusetts Institute of Technology
language : en
Publisher:
Release Date : 1957

Flutter Of Low Aspect Ratio Wings Calculation Of Pressure Distribution For Oscillating Wings Of Arbitrary Planform In Subsonic Flow By The Kernel Function Methods By Pao Tan Hsu written by Massachusetts Institute of Technology and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1957 with Airplanes categories.

Effect Of Aspect Ratio On Undamped Torsional Oscillations Of A Thin Rectangular Wing In Supersonic Flow

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Author : Charles E. Watkins
language : en
Publisher:
Release Date : 1949

Effect Of Aspect Ratio On Undamped Torsional Oscillations Of A Thin Rectangular Wing In Supersonic Flow written by Charles E. Watkins and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1949 with Aerodynamics, Supersonic categories.

The velocity potential and aerodynamic-torsional moment coefficients based on the linearized equations of motion for small disturbances are derived for a rectangular wing by means of appropriate distributions of moving sources and doublets. The aerodynamic-torsional-moment coefficent to study the effect of aspect ratio on the undamped torsional oscillations of a finite rectangular wing. Decreasing the aspect ratio of the wing is found to have a highly stabilizing effect on the undamped torsional oscillations. The results of some selected calculations are presented in the figures that illustrate this fact.

Flutter Investigation Of Two Thin Low Aspect Ratio Swept Solid Metal Wings In The Transonic Range By Use Of Free Falling Body

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Author : W. T. Lauten
language : en
Publisher:
Release Date : 1952

Flutter Investigation Of Two Thin Low Aspect Ratio Swept Solid Metal Wings In The Transonic Range By Use Of Free Falling Body written by W. T. Lauten and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1952 with Airplanes categories.

Flutter Analysis Of Low Aspect Ratio Straight Wings In The Transonic Region

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Author : G. D. MCCANN
language : en
Publisher:
Release Date : 1958

Flutter Analysis Of Low Aspect Ratio Straight Wings In The Transonic Region written by G. D. MCCANN and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1958 with categories.