An investigation of model helicopter rotor blade slap at low tip speeds
5th Aeroacoustics Conference ; 1979 ; Seattle , WA , U.S.A.
1979-01-01
Conference paper
Electronic Resource
English
Subjective evaluation of helicopter blade slap noise
NTRS | 1978
|Helicopter Noise Blade Slap. Part 2 Experimental Results
NTIS | 1972
|