Method and structure for airfoil thrust and lift control

Details Method and structure for airfoil thrust and lift control Method and structure for airfoil thrust and lift control

1976-08-30

1983-07-05

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244213, 244 90A, 244110B, 244 52, B64C 2108

Patent

active

043914241

ABSTRACT:
A method and structure for selectively conducting pressurized gas flow over the upper surface of an airfoil, the airflow being selectively directable either rearward through a spanwise outlet to produce thrust and augment lift or, alternatively, directed forward to spoil the aerodynamic flow over the wing to diminish lift and provide a reverse-thrust braking. The structure includes a plenum defined in the airfoil and ducting to receive pressurized air or gas, the plenum being defined in part by a panel longitudinally pivoted at the central portion thereof to, preferably, change the area of a rearward directed opening while concurrently and proportionally changing in the opposite sense the area of a forward oriented opening to selectively direct the pressurized air or gas rearwardly, forwardly, or in combinations of openings while preferably maintaining a substantially constant opening area. Also, an outboard independent portion of each gate may optionally be interconnected to the controls to move in a progressive manner and thus provide a powerful rolling torque, particularly at low airspeeds.

REFERENCES:
patent: 2034218 (1936-03-01), Weick et al.
patent: 2041688 (1936-05-01), Barnhart
patent: 2896881 (1959-07-01), Attinello
patent: 2991961 (1961-07-01), Rogallo et al.
patent: 3262658 (1966-07-01), Reilly
patent: 3276727 (1966-10-01), Clark
patent: 3493198 (1970-02-01), Roed
patent: 3807663 (1974-04-01), Bartoe, Jr.
patent: 3874620 (1975-04-01), Kahler et al.
patent: 3915412 (1975-10-01), Tibbs

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