Structure Borne Noise Estimates For The Pta Aircraft PDF Download
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Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 62 |
Release | : 2018-07-16 |
Genre | : |
ISBN | : 9781722779801 |
Download Structure-Borne Noise Estimates for the PTA Aircraft Book in PDF, ePub and Kindle
Estimates of the level of in-flight structure-borne noise transmission in the Propfan Test Assessment Aircraft were carried out for the first three blade passage frequencies. The procedure used combined the frequency response functions of wing strain to cabin sound pressure level (SPL) response obtained during ground test with in-flight measured wing strain response data. The estimated cabin average in-flight structure-borne noise levels varied from 64 to 84 dB, with an average level of 74 dB. The estimates showed little dependence on engine/propeller power, flight altitude, or flight Mach number. In general, the bare cabin noise levels decreased with increasing propeller tone, giving rise to a plausible structure-borne noise transmission problem at the higher blade passage tones. Without knowledge of the effects of a high insertion loss side wall treatment on structure-borne noise transmission, no quantitative conclusions could be made. Unruh, James F. Unspecified Center...
Author | : James F. Unruh |
Publisher | : |
Total Pages | : 72 |
Release | : 1990 |
Genre | : Aircraft cabins |
ISBN | : |
Download Structure-borne Noise Estimates for the PTA Aircraft Book in PDF, ePub and Kindle
Author | : |
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Total Pages | : |
Release | : 1990 |
Genre | : |
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Download Structure-borne Noise Estimates for the PTA Aircraft, August 1990 Book in PDF, ePub and Kindle
Author | : James F. Unruh |
Publisher | : |
Total Pages | : |
Release | : 1990 |
Genre | : |
ISBN | : |
Download Structure-borne Noise Transmission in the Profan Test Assessment (PTA) Aircraft Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 1572 |
Release | : 1992 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 440 |
Release | : 1990 |
Genre | : Airplane sounds |
ISBN | : |
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Author | : |
Publisher | : |
Total Pages | : 1450 |
Release | : |
Genre | : Government publications |
ISBN | : |
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Author | : |
Publisher | : |
Total Pages | : 1994 |
Release | : 1995 |
Genre | : Government publications |
ISBN | : |
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Author | : |
Publisher | : |
Total Pages | : 534 |
Release | : 1992 |
Genre | : Shock (Mechanics) |
ISBN | : |
Download The Shock and Vibration Digest Book in PDF, ePub and Kindle
Author | : United States. Congress. House. Committee on Science and Technology. Subcommittee on Transportation, Aviation, and Materials |
Publisher | : |
Total Pages | : 190 |
Release | : 1985 |
Genre | : |
ISBN | : |
Download 1986 NASA authorization Book in PDF, ePub and Kindle