Subsonic And Supersonic Flutter Analysis Of A Highly Tapered Swept Wing Planform Including Effects Of Density Variation And Finite Wing Thickness And Comparison With Experiments
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Subsonic And Supersonic Flutter Analysis Of A Highly Tapered Swept Wing Planform Including Effects Of Density Variation And Finite Wing Thickness And Comparison With Experiments
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Author : E. Carson Yates (Jr.)
language : en
Publisher:
Release Date : 1967
Subsonic And Supersonic Flutter Analysis Of A Highly Tapered Swept Wing Planform Including Effects Of Density Variation And Finite Wing Thickness And Comparison With Experiments written by E. Carson Yates (Jr.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Aerodynamics categories.
The flutter characteristics of several wings with an aspect-ratio of 4.0, a taper ratio of 0.2, and a quarter-chord sweepback of 45 deg. have been investigated analytically for Mach numbers up to 2.0. The calculations were based on the modified-strip-analysis method, the subsonic-kernel-function method, piston theory, and quasi-steady second-order theory. Results of t h e analysis and comparisons with experiment indicated that: (1) Flutter speeds were accurately predicted by the modified strip analysis, although accuracy at t h e highest Mach numbers required the use of nonlinear aerodynamic theory (which accounts for effects of wing thickness) for the calculation of the aerodynamic parameters. (2) An abrupt increase of flutter-speed coefficient with increasing Mach number, observed experimentally in the transonic range, was also indicated by the modified strip analysis. (3) In the low supersonic range for some densities, a discontinuous variation of flutter frequency with Mach number was indicated by the modified strip analysis. An abrupt change of frequency appeared experimentally in the transonic range. (4) Differences in flutter-speed-coefficient levels obtained from tests at low supersonic Mach numbers in two wind tunnels were also predicted by the modified strip analysis and were shown to be caused primarily by differences in mass ratio. (5) Flutter speeds calculated by the subsonic-kernel-function method were in good agreement with experiment and with the results of the modified strip analysis. (6) Flutter speed obtained from piston theory and from quasi-steady second-order theory were higher than experimental values by at least 38 percent.
Nasa Technical Note
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Author :
language : en
Publisher:
Release Date : 1974
Nasa Technical Note written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with categories.
Subsonic And Supersonic Flutter Analysis Of A Highly Tapered Swept Wing Planform Including Effects Of Density Variation And Finite Wing Thickness And Comparison With Experiments
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Author : E. Carson Jr Yates
language : en
Publisher:
Release Date : 1963
Subsonic And Supersonic Flutter Analysis Of A Highly Tapered Swept Wing Planform Including Effects Of Density Variation And Finite Wing Thickness And Comparison With Experiments written by E. Carson Jr Yates 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.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1967
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Aeronautics categories.
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Nasa Technical Memorandum
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Author :
language : en
Publisher:
Release Date : 1974
Nasa Technical Memorandum written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Aeronautics categories.
Experimental And Analytical Investigation Of The Flutter Of Flat Built Up Panels Under Streamwise Inplane Load
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Author : Robert W. Hess
language : en
Publisher:
Release Date : 1970
Experimental And Analytical Investigation Of The Flutter Of Flat Built Up Panels Under Streamwise Inplane Load written by Robert W. Hess and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Damping (Mechanics) categories.
The flutter of 13 panels subject to streamwise inplane load at Mach numbers of 1.57 and 1.96 has been investigated. Panel length-width ratios ranged from 1 to 4.2. The experimental flutter boundary was compared with an analytical flutter boundary for six of the panels. Damping, both aerodynamic and structural, was found to have a pronounced effect on the analytical flutter boundary. The agreement between analysis and experiment was dependent upon how structural damping was introduced in the formulation of the problem.
Monthly Catalog Of United States Government Publications
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Author : United States. Superintendent of Documents
language : en
Publisher:
Release Date : 1968
Monthly Catalog Of United States Government Publications written by United States. Superintendent of Documents and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Government publications categories.
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Applied Mechanics Reviews
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Author :
language : en
Publisher:
Release Date : 1968
Applied Mechanics Reviews written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Mechanics, Applied categories.
Subsonic And Supersonic Flutter Analysis Of A Highly Tapered Swept Wing Planform Including Effects Of Density Variation And Finite Wing Thickness And Comparison With Experiments
DOWNLOAD
Author : E. Carson Yates
language : en
Publisher:
Release Date : 1967
Subsonic And Supersonic Flutter Analysis Of A Highly Tapered Swept Wing Planform Including Effects Of Density Variation And Finite Wing Thickness And Comparison With Experiments written by E. Carson Yates and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with categories.
The Shock And Vibration Digest
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Author :
language : en
Publisher:
Release Date : 1973
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 1973 with Shock (Mechanics) categories.