Aerodynamic profile with an adjustable flap

Details Aerodynamic profile with an adjustable flap Aerodynamic profile with an adjustable flap

2005-03-08

2005-03-08

Barefoot, Galen (Department: 3644)

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

C244S217000, C244S130000

Reexamination Certificate

active

06863245

ABSTRACT:
An aerodynamic profile has an adjustable flap, which has a forward profile area as well as a rearward profile area situated in the downward current, bounded by a pressure-side covering skin as well as a suction-side covering skin. The pressure-side and suction-side covering skins converge in the rearward profile area at a trailing profile edge. In the rearward profile area on the underside of the pressure-side covering skin, a flap is swivellably disposed such that, in the inoperative condition, the flap, pointing in the flow direction, rests against the contour of the pressure-side covering skin and, in the deflected condition, the flap encloses an angle with the pressure-side covering skin. An airtight hinge connection is integrated in the flap so that, on the side of the flap protected from the wind, a turbulence system which improves the flow conditions is formed.

REFERENCES:
patent: 1729210 (1929-09-01), Dilage
patent: 1822940 (1931-09-01), Sundstedt
patent: 1893065 (1933-01-01), Zaparka
patent: 3883093 (1975-05-01), Violleau
patent: 5884872 (1999-03-01), Greenhalgh
patent: 5924649 (1999-07-01), Piening et al.
patent: 6168379 (2001-01-01), Bauer
patent: 6220551 (2001-04-01), Saiz
patent: 6234423 (2001-05-01), Hirahara et al.
patent: 6565045 (2003-05-01), Correge et al.
patent: 4107556 (1992-05-01), None
patent: WO 0063071 (2000-10-01), None
Cory S. Jang et al., “Computational Evaluation of an Airfoil with a Gurney Flap”, AIAA-92-2708-CP, American Institute of Aeronautics and Astronautics, Inc., 1992, pp. 801-809.

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