Aeronautics and astronautics – Aircraft – heavier-than-air – Airplane and fluid sustained
Patent
1981-04-07
1983-07-12
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft, heavier-than-air
Airplane and fluid sustained
244204, 244207, 244 52, 137829, 23926523, B64C 2108
Patent
active
043926215
ABSTRACT:
A method and apparatus for controlling the direction of the thrust vector of the engine exhaust stream in an upper surface blowing type aircraft includes ducts in the aircraft wings having rotary control valves for controlling the flow of air through the ducts from a source of high pressure to the low pressure upper surface of the wing. Introduction of the airflow at the upper surface rearwardly of the jet engine produces separation of Coanda effect attachment of the engine exhaust stream from the curved upper wing surface. Coanda effect attachment deflects the exhaust stream over the wing and toward the ground and results in a predominantly vertical thrust vector which augments lift of the aircraft. However, separation of the exhaust stream from the upper surface results in a predominantly horizontal thrust vector which augments forward acceleration of the aircraft. The fluidic action of the valves can rapidly change the thrust vector between basically horizontal and highly inclined orientations.
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Barefoot Galen L.
Flanagan John R.
Singer Donald J.
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