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Rotor/body aerodynamic interactionsA wind tunnel investigation was conducted in which independent, steady state aerodynamic forces and moments were measured on a 2.24 m diam. two bladed helicopter rotor and on several different bodies. The mutual interaction effects for variations in velocity, thrust, tip-path-plane angle of attack, body angle of attack, rotor/body position, and body geometry were determined. The results show that the body longitudinal aerodynamic characteristics are significantly affected by the presence of a rotor and hub, and that the hub interference may be a major part of such interaction. The effects of the body on the rotor performance are presented.
Document ID
19850051322
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Betzina, M. D.
(NASA Ames Research Center Moffett Field, CA, United States)
Smith, C. A.
(NASA Ames Research Center Moffett Field, CA, United States)
Shinoda, P.
(U.S. Army, Aeromechanics Laboratory, Moffett Field CA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Publication Information
Publication: Vertica
Volume: 9
Issue: 1, 19
ISSN: 0360-5450
Subject Category
Aerodynamics
Accession Number
85A33473
Distribution Limits
Public
Copyright
Other

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