Jet flow deflector for aircraft

Details Jet flow deflector for aircraft Jet flow deflector for aircraft

1974-11-07

1976-02-24

Blix, Trygve M.

Aeronautics and astronautics

Aircraft, heavier-than-air

Airplane and fluid sustained

244 42CC, 23926519, 23926533, B64C 1504

Patent

active

039400921

ABSTRACT:
A jet flow deflector is provided on an aircraft engine nacelle. In high speed cruise conditions, the deflector engages in a recess in the upper part of the nacelle and forms part of the jet nozzle, providing an efficient flow passage and an outer surface having minimum drag. For low speed flight, the deflector is moved downward and aft with respect to the nacelle to deflect the jet flow downward to increase the lift by use of the Coanda flap principle. By moving the deflector in this manner, an additional flow area is created above the deflector and at one side to increase the effective nozzle area. If desired, the deflector may be divided into two or more segments which are spaced from each other in the low speed configuration.

REFERENCES:
patent: 2654552 (1953-10-01), Jonas
patent: 2991961 (1961-07-01), Rogallo et al.
patent: 3018983 (1962-01-01), Davidson
patent: 3241312 (1966-03-01), Clark
patent: 3241771 (1966-03-01), Erwin
patent: 3456904 (1969-07-01), Dorand
patent: 3767140 (1973-10-01), Johnson
patent: 3779010 (1973-12-01), Chamay et al.
patent: 3820719 (1974-06-01), Clark
patent: 3844482 (1974-10-01), Stearns

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