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.
Forward flight effects on mixer nozzle design and noise considerations for STOL externally blown flap systems.
American Institute of Aeronautics and Astronautics, Aircraft Design, Flight Test, and Operations Meeting ; 1972 ; Los Angeles, CA
1972-08-01
Conference paper
No indication
English
Forward Flight Effects on Externally Blown Flap Noise
AIAA | 1978
|Noise tests of a mixer nozzle : externally blown flap system
TIBKAT | 1973
|NTRS | 1972
|