Automatic flap

Details Automatic flap Automatic flap

1996-11-27

1999-04-20

Jordan, Charles T.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244 90A, 244 90R, 416131, 416135, B64C 350

Patent

active

058950150

ABSTRACT:
An automatic flap that uses on each wing two adjacent fins, one of which is smaller and is located on the middle or front of the wing, the other, which is larger, on the bottom rear of the wing, with a shaft in the common eccentric zone linking the two fins, said shaft being parallel to the axis of the wing, having the fins different resistance to the ram air, creating a rotation torque as a function of the aircraft's speed, when retracted, they are shaped so that the front or top fin adapts to the upper surface of the wing and the rear or bottom fin adapts to the lower surface so that, together with the wing, they form an aerodynamic profile, there are attachment arms between the two fins, and bands or springs to assist or complement the action of the smaller fin whose resistance is such that, at low speed, the flap remains extended.

REFERENCES:
patent: 1504663 (1924-08-01), Wright et al.
patent: 1858259 (1932-05-01), Alfaro
patent: 1973017 (1934-09-01), Rothenhoefer
patent: 3120935 (1964-02-01), Perrin
patent: 4270712 (1981-06-01), von der Decken et al.
patent: 4566657 (1986-01-01), Grow
patent: 4693437 (1987-09-01), Khachikian
patent: 5570859 (1996-11-01), Quandt

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