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The NASA quiet engine programInitial studies on the design and testing of the quiet engine are described. The principal noise sources considered in the engine selection were the fan machinery noise and the fan and core jet noise. Nacelle acoustic linings are also mentioned. Fan and engine tests are discussed briefly and results indicate that it is possible to achieve or exceed noise reduction objectives of 15 to 20 PNdb below the levels of 707/DC-8 long-range transport aircraft.
Document ID
19720009069
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kramer, J. J. (NASA Lewis Research Center Cleveland, OH, United States)
Montegani, F. J. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 2, 2013
Publication Date
January 1, 1972
Subject Category
Propulsion Systems
Report/Patent Number
NASA-TM-X-67988
E-6729
Report Number: NASA-TM-X-67988
Report Number: E-6729
Meeting Information
Meeting: Ann. Intern. Gas Turbine Meeting
Location: San Francisco
Start Date: March 26, 1972
End Date: March 30, 1972
Sponsors: ASME
Accession Number
72N16719
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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