Lockheed Martin Corporation
Exhaust plume cooling using periodic interruption of exhaust gas flow to form ambient air entraining vortices

Abstract:

An exhaust plume cooling device for cooling an exhaust gas plume to reduce deleterious heat effects on impinged and surrounding surfaces. The device is supportable in a position downstream of an exhaust nozzle of an exhaust gas plume-producing engine and configured to periodically interrupt the flow of exhaust gases by injecting fluid into the exhaust plume zone.