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Tiltrotor ground noise reduction from rotor parametric changes as predicted by ROTONETA simple acoustic footprint trend study has been performed to determine the sensitivity of a tiltrotor aircraft to simple rotor design variations. Using the XV-15 aircraft as a baseline, the effects of blade number, rotor RPM, and chord on tone and broadband noise were predicted with the ROTONET noise code. Effects on EPNL, PNLT, and OASPL for level forward flight were considered.
Document ID
19930045418
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Jumper, Stephen J. (NASA Langley Research Center Hampton, VA, United States)
Prichard, Devon (Lockheed Engineering and Sciences Co. Hampton, VA, United States)
Golub, Robert A. (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
93A29415
Distribution Limits
Public
Copyright
Other

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