Confluent variable exhaust nozzle

F - Mech Eng,Light,Heat,Weapons – 02 – K

Patent

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Details

F02K 3/02 (2006.01) F02K 1/06 (2006.01) F02K 1/12 (2006.01) F02K 1/38 (2006.01) F02K 1/42 (2006.01) F02K 1/50 (2006.01) F02K 1/62 (2006.01)

Patent

CA 2460598

A gas turbine engine exhaust nozzle (28) includes coaxial inner and outer conduits (2,1). The inner conduit (2) has a main outlet (20) at an aft end thereof, and a row of radial apertures (4) spaced upstream from the outlet. The outer conduit (1) has an auxiliary outlet (10) at an aft end thereof, and surrounds the inner conduit (2) over the apertures (4) to form a bypass channel (36) terminating at the auxiliary outlet (10). A plurality of flaps (5) are hinged at upstream ends thereof to selectively cover and uncover corresponding ones of the apertures (4) and selectively bypass a portion of exhaust flow from the inner conduit (2) through the outer conduit (1) in confluent streams from both the main and auxiliary outlets (20,10).

L'invention concerne une tuyère (28) d'échappement de moteur à turbine à gaz qui comporte des conduits coaxiaux internes et externes (2, 1). Le conduit interne (2) a une sortie principale (20) à son extrémité arrière, et une rangée d'ouvertures radiales (4) espacées en amont de la sortie. Le conduit externe (1) a une sortie auxiliaire (10) à son extrémité arrière et entoure le conduit interne (2) au-dessus des ouvertures (4) pour former un canal de dérivation (36) se terminant à la sortie auxiliaire (10). Plusieurs volets (5) sont articulés à leurs extrémités en amont pour couvrir et découvrir de manière sélective les ouvertures (4) correspondantes et dévier de manière sélective une partie du flux d'échappement du conduit interne (2) à travers le conduit externe (1) des courants confluents des deux sorties principale et auxiliaire (20, 10).

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