Acoustics

Illustration of jet engine exit with and without chevrons

Jet Noise Reduction

Evaluation of noise reduction concept on supersonic nozzles using LES simulation and acoustic analysis.
Noise predictions of a hot twin-jet impinging on a jet blast deflector.

Jet Blast Deflector

CRAFT CFD simulation of a hot twin-jet impinging on a jet blast deflector.
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LES Predictions of Jet Noise and Jet Surface Interactions

The noise emission of airplanes at take-off and in landing around airports is increasingly a concern for industry and government research and is a deterrent to the development of supersonic commercial flight. The noise generated by the high velocity, turbulent exhaust of jet engines continues to be part of the total aircraft noise. NASA’s long […]