Helicopter Acoustics
1978
418 pages
Report
No indication
English
Air Transportation , Noise Pollution & Control , Aeroacoustics , Aircraft noise , Conferences , Helicopters , Noise pollution , Air transportation , Airfoil profiles , Heliports , Noise reduction , Pollution control , Prediction analysis techniques , Regulations , Rotary wings , Rotor aerodynamics , Urban development , Wind tunnel tests
NTRS | 1978
NTIS | 1978
NTRS | 1978
Recent Langley helicopter acoustics contributions
NTRS | 1988
|Recent Langley Helicopter Acoustics Contributions
NTIS | 1988
|