Experimental data of the peak axial-velocity decay in a moving airstream are presented for several types of nozzles. The nozzles include a six-tube mixer nozzle of a type considered for reduction of jet-flap interaction noise for externally-blown-flap STOL aircraft. The effect of secondary flow on the core flow velocity decay of a bypass nozzle is also discussed. Tentative correlation equations are suggested for the configurations evaluated. Recommendations for minimizing forward velocity effects on velocity decay and jet-flap interaction noise are made
Wind-tunnel investigations of the acoustic characteristics of the externally blown jet flap (EBF) an...
Exhaust jet mixing flow nozzles with peak axial velocity degradation for noise suppressio
Noise tests were conducted using simulated mixer-type nozzles and a small scale model of an external...
Jet peak-velocity decay data were obtained for a variety of circular and noncircular single-element ...
A summary is given of the noise suppression tests conducted for the STOL aircraft. The tests were ma...
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 tests were conducted with small-scale models of externally blown-flap powered-lift systems tha...
A highly suppressed TF-34 engine was used to investigate engine and flap interaction noise associate...
Noise data were taken for variations to a large scale model of an externally blown flap lift augment...
Utilizing a static test stand, 6- by 9-foot wind tunnel and 13-inch circular free jet, aerodynamic a...
Acoustic shielding benefits for jet noise of engine-over-the-wing for conventional aircraft (CTOL) a...
Noise tests were conducted on a small-scale model of an externally blown flap lift augmentation syst...
Noise tests were conducted with a nozzle exhausting over a small scale model of an externally blown ...
Short takeoff and landing (STOL) aircraft using externally blown flaps (EBF) for lift augmentation d...
Wind-tunnel investigations of the acoustic characteristics of the externally blown jet flap (EBF) an...
Exhaust jet mixing flow nozzles with peak axial velocity degradation for noise suppressio
Noise tests were conducted using simulated mixer-type nozzles and a small scale model of an external...
Jet peak-velocity decay data were obtained for a variety of circular and noncircular single-element ...
A summary is given of the noise suppression tests conducted for the STOL aircraft. The tests were ma...
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 tests were conducted with small-scale models of externally blown-flap powered-lift systems tha...
A highly suppressed TF-34 engine was used to investigate engine and flap interaction noise associate...
Noise data were taken for variations to a large scale model of an externally blown flap lift augment...
Utilizing a static test stand, 6- by 9-foot wind tunnel and 13-inch circular free jet, aerodynamic a...
Acoustic shielding benefits for jet noise of engine-over-the-wing for conventional aircraft (CTOL) a...
Noise tests were conducted on a small-scale model of an externally blown flap lift augmentation syst...
Noise tests were conducted with a nozzle exhausting over a small scale model of an externally blown ...
Short takeoff and landing (STOL) aircraft using externally blown flaps (EBF) for lift augmentation d...
Wind-tunnel investigations of the acoustic characteristics of the externally blown jet flap (EBF) an...
Exhaust jet mixing flow nozzles with peak axial velocity degradation for noise suppressio
Noise tests were conducted using simulated mixer-type nozzles and a small scale model of an external...
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