Cooling system for a divergent section of a nozzle

Fluid sprinkling – spraying – and diffusing – Reaction motor discharge nozzle with jacketed or hollow... – With subsequent mixing in main discharge stream in or...

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60271, B64D 3304

Patent

active

054841054

ABSTRACT:
A nozzle cooling system having apparatus to overexpand the exhaust flow in a divergent section of an aircraft gas turbine engine nozzle, relative to the air in the engine nozzle's bay and a valve to allow ambient air from the bay to flow over divergent flaps and seals of the divergent section, and rapidly cool the divergent section of the nozzle for IR suppression. An area ratio control apparatus may be used to change a ratio of the nozzle exit area to the nozzle throat area to an overexpanded level that reduces static pressures along at least a longitudinally extending portion of the surfaces to below the ambient pressure of air outside the nozzle to draw the ambient air into the exhaust gas flowpath, and a valve apparatus to controllably flow the ambient air into the exhaust gas flowpath when the static pressures are below the ambient pressure. Further embodiments of the present invention provide alternative area ratio control apparatus, such as a variable exit area control apparatus to vary the exit area or a variable throat area control apparatus to vary the throat area, or both. Valve apparatus with a gap apparatus to controllably open gaps between the circumferentially adjacent divergent flaps and seals are provided such as spring loaded divergent seal retainers and flapper valves sealingly disposed over corresponding cooling apertures through the divergent seals.

REFERENCES:
patent: 2989845 (1961-06-01), Howald
patent: 3048971 (1962-08-01), Alford
patent: 3049873 (1962-08-01), Weeks, Jr.
patent: 3054256 (1962-09-01), Minos
patent: 3062003 (1962-11-01), Hamilton
patent: 3231197 (1966-01-01), Strom
patent: 3612400 (1971-10-01), Johnson et al.
patent: 3650348 (1972-03-01), Colebrook et al.
patent: 3972475 (1976-08-01), Nelson
patent: 4128208 (1978-12-01), Ryan et al.
patent: 4245787 (1981-01-01), Freid
patent: 4355507 (1982-10-01), Coffey et al.
patent: 4420932 (1993-12-01), Mendez et al.
patent: 4440346 (1984-04-01), Wiley
patent: 4544098 (1985-10-01), Warburton
patent: 4690330 (1987-09-01), Robinson et al.
patent: 4994660 (1991-02-01), Hauer
patent: 5000386 (1991-03-01), Lybarger
patent: 5039014 (1991-08-01), Lippmeier
patent: 5056307 (1991-10-01), Liang
patent: 5076496 (1991-12-01), Lippmeier
patent: 5082182 (1992-01-01), Bruchez, Jr. et al.
patent: 5111992 (1992-05-01), Barcza
patent: 5120005 (1992-06-01), Reedy
patent: 5141154 (1992-08-01), Barcza
patent: 5174502 (1992-12-01), Lippmeier et al.
patent: 5215256 (1993-06-01), Barcza
patent: 5215257 (1993-06-01), Barcza
patent: 5238189 (1993-08-01), Barcza
patent: 5269467 (1993-12-01), Williams et al.
patent: 5285637 (1994-02-01), Barcza

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