The helicopter acoustics program at NASA Langley has included technology for elements of noise control ranging from sources of noise to receivers of noise. The scope of Langley contributions for about the last decade is discussed. Specifically, the resolution of two certification noise quantification issues by subjective acoustics research, the development status of the helicopter system noise prediction program ROTONET are reviewed and the highlights from research on blade rotational, broadband, and blade vortex interaction noise sources are presented. Finally, research contributions on helicopter cabin (or interior) noise control are presented. A bibliography of publications from the Langley helicopter acoustics program for the past 10 years is included.
Recent Langley helicopter acoustics contributions
1988-02-01
Sonstige
Keine Angabe
Englisch
Recent Langley Helicopter Acoustics Contributions
NTIS | 1988
|Trends in Langley helicopter noise research
NTRS | 1978
|NASA-Langley helicopter tower instrumentation systems
NTRS | 1974
|NTRS | 1978