Convertible ejector selectively cooled thrust vectoring exhaust

Details Convertible ejector selectively cooled thrust vectoring exhaust Convertible ejector selectively cooled thrust vectoring exhaust

1995-09-25

1997-10-28

Thorpe, Timothy

Power plants

Reaction motor

Including heat exchange means

60230, 60232, 23926535, 23926539, F02K 1100

Patent

active

056807554

ABSTRACT:
A nozzle cooling system for selectively cooling longitudinally extending and circumferentially adjacent divergent exhaust flow confining elements bounding a hot exhaust gas flowpath in a divergent section of an aircraft gas turbine engine exhaust nozzle and providing pivoting capability for divergent flaps and seals in an axisymmetric vectoring nozzle. The apparatus includes axially adjacent forward and aft sections of at least one of the exhaust flow confining elements (typically referred to as flaps and seals), the adjacent forward and aft sections have forward and aft interior hot surfaces respectively, and mounting apparatus for mounting the aft section to the forward section in one of at least two positions. A first one of these two positions spaces apart the sections to form a gap (106) between the sections which allows cooling air (102) to flow onto the aft interior hot surface and a second one of these two positions places the sections in close abutting relationship so as to essentially prevent cooling air (102) from flowing onto the aft interior hot surface.

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