Add to ORKGA summary is given of the noise suppression tests conducted for the STOL aircraft. The tests were made using a large scale mixer nozzle and externally blown flap model. Data were obtained over a range of nozzle exhaust velocities (172 to 284 m/sec) and flap angles. Comparisons were made between the results of the mixer nozzle and those obtained with a standard single convergent nozzle. The resulting conclusions show that a reduction in noise level did occur using the mixer nozzle system
A highly suppressed TF-34 engine was used to investigate engine and flap interaction noise associate...
Noise data were obtained with a model of an externally blown flap of the type that is currently bein...
The results of preliminary acoustic tests of the engine over the wing concept are summarized. The te...
Noise reduction effectiveness of mixer nozzle for increasing lift capability in STOL aircraf
Noise tests were conducted on a large scale, cold flow model of an engine-under-the-wing externally ...
Noise data were taken for variations to a large scale model of an externally blown flap lift augment...
Noise tests were conducted using simulated mixer-type nozzles and a small scale model of an external...
Noise data were obtained with a large externally blown flap model. A fan-jet engine exhaust was simu...
Screening tests of upper surface blowing on externally blown flaps configurations were conducted. No...
Noise data were obtained with a large-scale cold-flow model of a two-flap, under-the-wing, externall...
Noise tests were conducted with a nozzle exhausting over a small scale model of an externally blown ...
Experimental data of the peak axial-velocity decay in a moving airstream are presented for several t...
The Lewis Research Center cold-flow model externally blown flap (EBF) noise research test program is...
June 1972Also issued as an M.S. thesis, Massachusetts Institute of Technology, Dept. of Aeronautics ...
Small scale model acoustic experiments were conducted to measure the noise produced in the flyover a...
A highly suppressed TF-34 engine was used to investigate engine and flap interaction noise associate...
Noise data were obtained with a model of an externally blown flap of the type that is currently bein...
The results of preliminary acoustic tests of the engine over the wing concept are summarized. The te...
Noise reduction effectiveness of mixer nozzle for increasing lift capability in STOL aircraf
Noise tests were conducted on a large scale, cold flow model of an engine-under-the-wing externally ...
Noise data were taken for variations to a large scale model of an externally blown flap lift augment...
Noise tests were conducted using simulated mixer-type nozzles and a small scale model of an external...
Noise data were obtained with a large externally blown flap model. A fan-jet engine exhaust was simu...
Screening tests of upper surface blowing on externally blown flaps configurations were conducted. No...
Noise data were obtained with a large-scale cold-flow model of a two-flap, under-the-wing, externall...
Noise tests were conducted with a nozzle exhausting over a small scale model of an externally blown ...
Experimental data of the peak axial-velocity decay in a moving airstream are presented for several t...
The Lewis Research Center cold-flow model externally blown flap (EBF) noise research test program is...
June 1972Also issued as an M.S. thesis, Massachusetts Institute of Technology, Dept. of Aeronautics ...
Small scale model acoustic experiments were conducted to measure the noise produced in the flyover a...
A highly suppressed TF-34 engine was used to investigate engine and flap interaction noise associate...
Noise data were obtained with a model of an externally blown flap of the type that is currently bein...
The results of preliminary acoustic tests of the engine over the wing concept are summarized. The te...