STOL noise goals, noise sources, and their affects on engine and propulsion systems design are considered. It is shown that major noise sources constitute the blown-flap system with its turbofan engine and the augmentor wing propulsion system. Most of the problem areas associated with STOL propulsion systems are defined and the development of a multistage fan engine with proper rotor-stator spacings and low noise core exhaust jet is illustrated. A variable-area acoustic inlet provides near sonic flow conditions during takeoff and landing.
STOL noise sources and fan noise treatment
1972-01-01
Conference paper
No indication
English
AIAA | 1976
|Aeroacoustics: STOL noise; Airframe and airfoil noise
NTRS | 1976
|Panel Discussion: STOL and Rotor Noise
AIAA | 1975
|Noise Considerations for V/STOL Transports
NTRS | 1968
|Noise radiation from V/STOL aircraft.
NTRS | 1972
|