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Evaluation of Aero Commander sidewall vibration and interior acoustic data: Static operationsResults for the vibration measured at five locations on the fuselage structure during static operations are presented. The analysis was concerned with the magnitude of the vibration and the relative phase between different locations, the frequency response (inertance) functions between the exterior pressure field and the vibration, and the coherent output power functions at interior microphone locations based on sidewall vibration. Fuselage skin panels near the plane of rotation of the propeller accept propeller noise excitation more efficiently than they do exhaust noise.
Document ID
19800024884
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Piersol, A. G. (Bolt, Beranek, and Newman, Inc. Canoga Park, CA, United States)
Wilby, E. G. (Bolt, Beranek, and Newman, Inc. Canoga Park, CA, United States)
Wilby, J. F. (Bolt, Beranek, and Newman, Inc. Canoga Park, CA, United States)
Date Acquired
September 4, 2013
Publication Date
October 1, 1980
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
BBN-4016
NASA-CR-159290
Accession Number
80N33392
Funding Number(s)
CONTRACT_GRANT: NAS1-14611
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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