Jet nozzle having centerbody for enhanced exit area mixing

Details Jet nozzle having centerbody for enhanced exit area mixing Jet nozzle having centerbody for enhanced exit area mixing

1997-05-02

1999-07-20

Weldon, Kevin

Fluid sprinkling, spraying, and diffusing

Reaction motor discharge nozzle

With means controlling amount, shape or direction of...

602261, B64C 138

Patent

active

059246324

ABSTRACT:
A nozzle arrangement includes a nozzle and a centerbody. The longitudinal axis of the centerbody is coaxially aligned with the nozzle. The centerbody has a free end portion shaped to create vortices in exhaust exiting the exit area. The vortices enhance mixing action in the exhaust and reduce exhaust noise while augmenting thrust.

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Seiner, John M., et al., "Supersonic Jet Noise and the High Speed Civile Transport", AIAA-89-2358, Jul. 10-12, 1989, 24 pgs.
Presz, Walter M., Jr., "Mixer/Ejector Noise Suppressors", AIAA-91-2243, Jun. 24-26, 1991, 11 pgs.
Ahuja, K. K., "Mixing Enhancement and Jet Noise Reduction Through Tabs Plus Ejectors", AIAA-93-4347, Oct. 25-27, 1993, 15 pgs.
Krothapalli, A. et al, "The Role of Streamwise Vortices on Sound Generation of a Supersonic Jet", AIAA 93-4320; Oct. 25-27, 1993; 11 pgs.
Seiner, John M. et al., "Nozzle Thust Optimizationn While Reducing Jet Noise", CEAS/AIAA-95-149; 12-15 Jun., 1995; 22 pgs.
Seiner, J. et al., "Nozzle Thrust Optimzation While Reducing Jet Noise", AIAA 95-2191; Jun. 19-22, 1995; 27pgs.
Gilinsky, M. et al., "Corrugated Nozzles for Acoustic and Thrust Benefits"; AIAA/CEAS 96-1670; May 6-8, 1996; 31 pgs.

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