Topics On Flexible Airplane Dynamics Residual Stiffness Effects In Truncated Modal Analysis

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Topics On Flexible Airplane Dynamics Residual Stiffness Effects In Truncated Modal Analysis
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Author :
language : en
Publisher:
Release Date : 1963
Topics On Flexible Airplane Dynamics Residual Stiffness Effects In Truncated Modal Analysis written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Aeroelasticity categories.
pt.3: The dynamic coupling of rigid and elastic degrees of freedom of an airplane are described by two methods. In the first, coupling is described by the changes in airframe characteristic equation roots caused by the introduction of coupling terms to the equations of motion. The second method employs modal response coefficients to compare the relative amplitudes of rigid and elastic degrees of freedom at each coupled mode frequency. Simple literal expressions are obtained for each of these descriptors and physical interpretations given. Time vector diagrams are also used to show the major parameters affecting coupling. (Author).
Topics On Flexible Airplane Dynamics
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Author :
language : en
Publisher:
Release Date : 1963
Topics On Flexible Airplane Dynamics written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Aeroelasticity categories.
pt.3: The dynamic coupling of rigid and elastic degrees of freedom of an airplane are described by two methods. In the first, coupling is described by the changes in airframe characteristic equation roots caused by the introduction of coupling terms to the equations of motion. The second method employs modal response coefficients to compare the relative amplitudes of rigid and elastic degrees of freedom at each coupled mode frequency. Simple literal expressions are obtained for each of these descriptors and physical interpretations given. Time vector diagrams are also used to show the major parameters affecting coupling. (Author).
Topics On Flexible Airplane Dynamics Pt 1 Residual Stiffness Effects In Truncated Modal Analysis
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Author : B.F. Pearce
language : en
Publisher:
Release Date : 1963
Topics On Flexible Airplane Dynamics Pt 1 Residual Stiffness Effects In Truncated Modal Analysis written by B.F. Pearce and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with categories.
Topics On Flexible Airplane Dynamics Coupling Of The Rigid And Elastic Degrees Of Freedom Of An Airframe
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Author :
language : en
Publisher:
Release Date : 1963
Topics On Flexible Airplane Dynamics Coupling Of The Rigid And Elastic Degrees Of Freedom Of An Airframe written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Aeroelasticity categories.
pt.3: The dynamic coupling of rigid and elastic degrees of freedom of an airplane are described by two methods. In the first, coupling is described by the changes in airframe characteristic equation roots caused by the introduction of coupling terms to the equations of motion. The second method employs modal response coefficients to compare the relative amplitudes of rigid and elastic degrees of freedom at each coupled mode frequency. Simple literal expressions are obtained for each of these descriptors and physical interpretations given. Time vector diagrams are also used to show the major parameters affecting coupling. (Author).
Topics On Flexible Airplane Dynamics The Application Of Flexible Airframe Transfer Function Approximations And The Sensitivity Of Airframe Transfer Functions To Elastic Mode Shapes
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Author :
language : en
Publisher:
Release Date : 1963
Topics On Flexible Airplane Dynamics The Application Of Flexible Airframe Transfer Function Approximations And The Sensitivity Of Airframe Transfer Functions To Elastic Mode Shapes written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Aeroelasticity categories.
pt.3: The dynamic coupling of rigid and elastic degrees of freedom of an airplane are described by two methods. In the first, coupling is described by the changes in airframe characteristic equation roots caused by the introduction of coupling terms to the equations of motion. The second method employs modal response coefficients to compare the relative amplitudes of rigid and elastic degrees of freedom at each coupled mode frequency. Simple literal expressions are obtained for each of these descriptors and physical interpretations given. Time vector diagrams are also used to show the major parameters affecting coupling. (Author).
Topics On Flexible Airplane Dynamics Part I Residual Stiffness Effects In Truncated Modal Analysis
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Author : B. F. Pearce
language : en
Publisher:
Release Date : 1963
Topics On Flexible Airplane Dynamics Part I Residual Stiffness Effects In Truncated Modal Analysis written by B. F. Pearce and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with categories.
The flexible airframe equations of motion are derived with an arbitrary number of elastic de grees of freedom included. The number of equa tions is reduced to include only those necessary for adequate dynammic representation of the air frame, and the effects of the excluded modes are shown. The result is that a matrix X sub in finity must be calculated which is a function of the flexibility represented by the excluded modes. The calculation of this matrix is com plicated by the fact that it is, in explicit form, a function of the mode shapes for the ex cluded elastic degrees of freedom. Usually only a few of these higher order mode shapes can be found withh any accuracy. The problem is resolved by identifying two quantities, X sub f and X sub f infinity, which are ssuperposable to give the complete effects of structural static deflections, X sub infinity. This physi cally satisfying result is implemented by re lating X sub f infinity and X sub f to basic geometrical, inertial, and stiffness properties. The solution is completely general and applies to all elastic systems. (Author).
The Shock And Vibration Digest
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Author :
language : en
Publisher:
Release Date : 1982
The Shock And Vibration Digest written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Shock (Mechanics) categories.
Report
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Author :
language : en
Publisher:
Release Date : 1966
Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Aeronautics categories.
Current Papers
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Author : Aeronautical Research Council (Great Britain)
language : en
Publisher:
Release Date : 1975
Current Papers written by Aeronautical Research Council (Great Britain) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Aeronautics categories.
Vehicle Design Considerations For Active Control Application To Subsonic Transport Aircraft
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Author : L. Gregor Hofmann
language : en
Publisher:
Release Date : 1974
Vehicle Design Considerations For Active Control Application To Subsonic Transport Aircraft written by L. Gregor Hofmann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Airplanes categories.