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En route noise of turboprop aircraft and their acceptability: Report of testsThe development of propfan-powered aircraft has been observed with great interest. It is obvious that during cruising flight, the aircraft powerplant (propellers) cause a noise clearly perceivable on the ground. It is the audible frequency spectrum of the propfan powerplants relative to the high tip speeds that presents the problem. A flight test was conducted on 30 April, 1989 at the Frankfurt Airport. Results of the test flight are present.
Document ID
19900015542
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Held, Wolf (Hessian Ministry for Economics and Technology Frankfurt, Germany)
Date Acquired
September 6, 2013
Publication Date
April 1, 1990
Publication Information
Publication: NASA, Langley Research Center, FAA(NASA En Route Noise Symposium
Subject Category
Acoustics
Accession Number
90N24858
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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