Jet engine tail pipe flow deflector

Details Jet engine tail pipe flow deflector Jet engine tail pipe flow deflector

1976-05-11

1978-01-24

Blix, Trygve M.

Fluid sprinkling, spraying, and diffusing

Reaction motor discharge nozzle

With means controlling amount, shape or direction of...

244 52, 244100A, B63H 2546, B64C 1510

Patent

active

040699773

ABSTRACT:
Apparatus for producing a component of thrust at right angles to the main thrust direction of a jet engine. The apparatus comprises a deflecting device which provides a surface, bounded by side walls normal to the surface, that curves outwardly from tangency to the main thrust direction at the tail pipe edge. A series of control ports extending transversely of the curved surface at the point of tangency are connected to ambient air pressure through a normally open remotely controlled air valve. Closure of the air valve causes that portion of the jet stream adjacent to the curved surface to follow the surface because of the Coanda effect, thus producing a thrust component normal to the main jet stream. The device is particularly useful for yaw control of air cushion equipped jet powered aircraft when taxiing and during the low speed portions of takeoff and landing runs.

REFERENCES:
patent: 3606165 (1971-09-01), Dunaway
patent: 3628726 (1971-12-01), Johnson et al.
patent: 3759039 (1973-09-01), Williams
patent: 3995662 (1976-12-01), Fitzgerald et al.

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