Spinner ducted exhaust for pusher turboprop engines

Details Spinner ducted exhaust for pusher turboprop engines Spinner ducted exhaust for pusher turboprop engines

1988-04-28

1990-01-09

Peters Jr., Joseph F.

Aeronautics and astronautics

Aircraft power plants

244 57, 244 65, 416171, 416 93R, 416 94, 60262, B64D 3300, B64D 2900

Patent

active

048922692

ABSTRACT:
A pusher turboprop engine is provided with an interior exhaust duct structure which directs the hot turbine gasses through and out of the engine nacelle to an annular duct mounted on the rear spinner which surrounds the propeller hub. The rotating annular duct includes blade-shaped shields which protect the roots of the propeller blades from the hot exhaust gasses and also pulls warmed cooling air through the engine nacelle thereby providing a rearwardly directed jet thrust to augment the propeller thrust.

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