Progress in aeroacoustical theory and experiments reviewed. Report summarizes continuing U.S. Army programs of research into causes of noise generated by helicopters. Topics of study include high-speed impulsive noise, blade/vortex-interaction noise, and low-frequency harmonic noise.
Research In Helicopter Noise
NASA Tech Briefs ; 15 , 8
1991-08-01
Miscellaneous
No indication
English
NTIS | 1974
|Research on Helicopter Rotor Noise
NTIS | 1975
|European Research into Helicopter Internal Noise
British Library Conference Proceedings | 1992
|Facility requirements for helicopter noise research
NTRS | 1982
|Trends in Langley helicopter noise research
NTRS | 1978
|