Power plants – Combustion products used as motive fluid – With exhaust treatment
Patent
1989-12-21
2000-10-24
Tudor, Harold J.
Power plants
Combustion products used as motive fluid
With exhaust treatment
2391273, 23926517, 342 2, F02K 144
Patent
active
061348791
ABSTRACT:
A suppression system for a gas turbine engine uses a tapered exhaust manifold with a plurality of exhaust nozzles acting in conjunction with a plurality of mixing cells to produce cooling of an exhaust gas stream upon exit from an aircraft. The cooling air is supplied to the mixing cells in such a way that the walls of the cells are inherently maintained at a desired temperature without the use of dedicated cooling apparatus such as finned head exchangers, film cooling slots, etc. This approach allows the typically conflicting requirements of low IR signature and low radar cross section to be simultaneously satisfied in an efficient, light weight and low cost manner. The exhaust gas suppression system is preferably disposed in the tail section of a helicopter aircraft, having nozzles pointing in an essentially downward direction to reduce the threat from an over flying aircraft while minimizing the ability of ground based systems to acquire a direct line of sight on any hot surfaces or to detect the exhaust cavity using radar.
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Amelio Armand F.
Barnard Richard S.
Frawley Robert C.
Sapone William J.
Tudor Harold J.
United Technologies Corporation
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