Wrap Around Fin Waf Pressure Distribution
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Wrap Around Fin Waf Pressure Distribution
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Author : John E. Holmes
language : en
Publisher:
Release Date : 1973
Wrap Around Fin Waf Pressure Distribution written by John E. Holmes and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Guided missiles categories.
The principal difference between a wrap around fin and a planar fin is that the WAF exhibits an induced rolling moment at zero degree angle of attack, while a straight fin has none. The Naval Ordnance Laboratory, along with other members of The Technical Cooperation Program, initiated a joint investigation into the causes of the induced roll moment. Measurements of the pressure distribution over both the convex and concave sides of a WAF showed that the primary difference in pressure across the fin occurred immediately behind the leading edge with the pressure on the convex side apparently being affected more by the curvature than that on the concave side. In general, for a WAF with fixed curvature, it appeared that the physical characteristic which would have the most effect on changing the roll moment would be the fin cross-sectional profile, especially the leading-edge profile. (Author).
Government Reports Announcements
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Author :
language : en
Publisher:
Release Date : 1974
Government Reports Announcements 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 Research categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date :
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 with Aeronautics categories.
Nasa Technical Memorandum
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Author :
language : en
Publisher:
Release Date : 1976
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 1976 with Aeronautics categories.
Characterization Of The Flowfield Near A Wrap Around Fin At Supersonic Speeds
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Author : Carl P. Tilmann
language : en
Publisher:
Release Date : 1998
Characterization Of The Flowfield Near A Wrap Around Fin At Supersonic Speeds written by Carl P. Tilmann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Technology & Engineering categories.
A wall-mounted semi-cylindrical model fitted with a single wrap- around in (WAF) has been investigated numerically and experimentally, with the objective of characterizing the mean and turbulent flowfield near a WAF in a supersonic flowfield. Numerical and experimental results are used to determine the nature of the flowfield and quantify the effects of fin curvature on the character of the flow near WAFs. This research has been motivated by the need to identify possible sources of a high-speed rolling moment reversal observed in sub-scale flight tests. Detailed mean flow and turbulence measurements were obtained in the AFIT Mach 3 wind tunnel using conventional probes and cross-wire hot-film anemometry at a series of stations upstream of and aft of the fin shock/boundary layer interaction. Hot-film anemometry results showed the turbulence intensity and Reynolds shear stress in the fuselage boundary layer to be far greater on the concave side of the fin than on the convex side. Mean flow was also obtained in the AFIT Mach 5 wind tunnel using conventional pressure probes. Numerical results were also obtained at the test conditions employing the algebraic eddy viscosity model of Baldwin and Lomax. Correlation with experimental data suggests that the calculations have captured the flow physics involved in this complicated flowfield. The calculations, corroborated by experimental results, indicate that a vortex exists in the fin/body juncture region on the convex side of the fin. This feature is not captured by the oft- used inviscid methods, and can greatly influence the pressure loading on the fin near the root.
Applied Mechanics Reviews
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Author :
language : en
Publisher:
Release Date : 1974
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 1974 with Mechanics, Applied categories.
Government Reports Announcements
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Author :
language : en
Publisher:
Release Date : 1974
Government Reports Announcements 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 Technology categories.
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1974
Government Reports Announcements Index 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 Science categories.
Supersonic Aerodynamic Characteristics Of A Series Of Wrap Around Fin Missile Configurations
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Author : Roger H. Fournier
language : en
Publisher:
Release Date : 1977
Supersonic Aerodynamic Characteristics Of A Series Of Wrap Around Fin Missile Configurations written by Roger H. Fournier and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Aerodynamics, Supersonic categories.
A parametric study of wrap-around-fin missile configurations has been conducted at Mach numbers from 1.60 to 2.86 in the Langley Unitary Plan wind tunnel. The fin configurations investigated included variations in chord length, leading-edge sweep, thickness ratio, and leading-edge shape. The investigation also included a smooth and a stepped-down afterbody required for flush retraction of the wrap-around-fin configuration.
The Evaluation Of The Rolling Moments Induced By Wraparound Fins
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Author :
language : en
Publisher:
Release Date : 1983
The Evaluation Of The Rolling Moments Induced By Wraparound Fins written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.