Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1979-08-10
1981-08-25
Frankfort, Charles E.
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244210, 244214, 244218, 244219, B64C 2108, B64C 924, B64C 344
Patent
active
042854822
ABSTRACT:
A wing leading edge high-lift generating device in the form of a spanwise slat segment having both an upper and a lower surface, faired into an airfoil configured leading edge of a relatively stationary portion of the wing therebehind and movable with respect thereto by a downwardly extending hinge arm pivotally related to a downwardly extending hinge bracket from the wing within a fairing structure which also includes an actuator between the hinge arm and bracket for biasing the hinge arm connected to the leading edge device away from and downwardly with respect to the hinge bracket of the wing about the pivotal connection therewith. Further, the wing leading edge slat device has a large cavity formed between the upper and lower surfaces thereof, which cavity is readily adaptable for the insertion of a large duct for blowing pressurized air through a nozzle and an aerodynamic slot formed between the leading edge slat and the relatively stationary airfoil configured leading edge of the wing therebehind when the leading edge slat is moved outwardly and downwardly. In another embodiment the leading edge slat has its movement guided by an extendable track.
REFERENCES:
patent: 2541565 (1951-02-01), Ziegler
patent: 2740597 (1956-04-01), Wittman
patent: 2886264 (1959-05-01), Seager
patent: 3093350 (1963-06-01), Wilkins
patent: 3831886 (1974-08-01), Burdges et al.
patent: 3904152 (1975-09-01), Hill
patent: 3987983 (1976-10-01), Cole
Donahue Bernard A.
Frankfort Charles E.
Hartmann H. Gus
The Boeing Company
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