Aircraft with stowable vectorable nozzle and ejector thrust augmentation
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United States of America Patent
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-
Jun 20, 1989
Issued Date -
N/A
app pub date -
Dec 14, 1987
filing date -
Apr 8, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An aircraft has two vectorable front nozzles each mounted in a bearing located within the fuselage near an adjacent wing. Each nozzle is rotatable from a first position in which exhaust air is directed downwards to a second position in which the exhaust air is directed rearwards. In the first position the nozzle resides within a cavity formed in the wing root to reduce nozzle drag when the aircraft is propelled by its rear nozzle only. The front nozzles rotate out of their respective cavities to the second position when they are used for forward thrust. Additionally, the cavity is extended to form a passage through which secondary air entrained by exhaust from the front nozzle operating in the first position adds to the vertical thrust and reduces suck down effects.
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