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Development and validation of 'quiet tail rotor' technologySystematic research leading to the development and validation of a 'quiet' full-scale tail rotor is described in this paper. Hover performance and acoustic test results acquired on the Sikorsky tail rotor whirl test facility, and some early results from the just-concluded flight tests are provided. The results show that substantial reduction in noise signature can be achieved simultaneously with improvements in performance when advances in aerodynamic and aeroacoustic technologies are judiciously applied.
Document ID
19930045419
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Shenoy, Rajarama K.
(NASA Langley Research Center Hampton, VA, United States)
Moffitt, Robert C.
(NASA Langley Research Center Hampton, VA, United States)
Yoerkie, Charles M.
(Sikorsky Aircraft Stratford, CT, United States)
Childress, Otis, Jr.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1991
Publication Information
Publication: In: AHS and Royal Aeronautical Society, Technical Specialists' Meeting on Rotorcraft Acoustics(Fluid Dynamics, Philadelphia, PA, Oct. 15-17, 1991, Proceedings (A93-29401 10-71)
Publisher: American Helicopter Society
Subject Category
Acoustics
Accession Number
93A29416
Funding Number(s)
CONTRACT_GRANT: NAS1-17146
Distribution Limits
Public
Copyright
Other

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