Exhaust Jet Noise Reduction for Tactical Aircraft
A class of high amplitude and high bandwidth actuators called localized arc filament plasma actuators (LAFPAs) have been developed at OSU and used for control of high-speed and high Reynolds number jets. The control included successful noise mitigation in a Mach 0.9 jet and mixing enhancement in a Mach 1.3 ideally expanded jet. The control relies on high bandwidth of the actuators and excites various instabilities in the jet to achieve the goal of mixing enhancement or noise mitigation. The proposed Phase II work will explore the effectiveness of this technology in more practical supersonic exhaust jets operating with various flow regimes (i.e. ideally-, over-, and under-expanded) and high temperature. Technology demonstration (effect on plume and acoustics) on a 1/4th scaled nozzle will be made. Detailed system integration issues including design of a multi-channel, light weight, energy efficient plasma generator, and risk analyses will be performed.
Small Business Information at Submission:
Spectral Energies, LLC
5100 Springfield Street Suite 301 Dayton, OH -
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