Method and system for improved V/STOL aircraft performance

Details Method and system for improved V/STOL aircraft performance Method and system for improved V/STOL aircraft performance

1984-12-20

1987-12-01

Peters, Jr., Joseph F.

Aeronautics and astronautics

Aircraft, heavier-than-air

Airplane and fluid sustained

244 15, B64C 1502

Patent

active

047098805

ABSTRACT:
A method and system for improved performance of a V/STOL aircraft characterized by directing a major portion of exhaust gas flow from a propulsion system through a closed conduit means to exit through a thrust producing primary nozzle that includes turning apparatus for forming a bend for the exhaust flow downstream of the propulsion source; turning the exhaust flow while simultaneously bleeding-off through at least one secondary nozzle a second and minor portion of the exhaust flow from an outer portion of the bend downstream of the bend leasing edge to reduce the vortex formation in the bend and directing the bleed-off and exhaust flows adjacent each other and oriented in the same direction in all flight modes for recovery of the maximum thrust potential. Also disclosed are preferred embodiments of the respective source of propulsion, primary and secondary thrust nozzles, flaps and orientation of the secondary thrust nozzles adjacent the flaps for improved performance because of preventing of the formation of the thrust inhibiting vortices in the turn and the improved lift and prevention of boundary layer separation of the flow over the flap surfaces providing lift.

REFERENCES:
patent: 3262645 (1966-07-01), Veno, Jr.
patent: 3299638 (1967-01-01), Santamaria et al.
patent: 3397854 (1968-08-01), Reyle
patent: 4358074 (1982-11-01), Schoen et al.

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