Wing root aerofoil for forward swept wings

Details Wing root aerofoil for forward swept wings Wing root aerofoil for forward swept wings

1992-03-18

1994-05-24

Huppert, Michael S.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244204, B64C 2100, B64C 310, B64C 344

Patent

active

053141423

ABSTRACT:
A swept forward wing for aircraft comprising an inner wing portion and an outer wing portion in which the upper surface curvature of the inner wing portion is designed to create three dimensional flow thereover to manipulate the sweep of the isobars and prevent desweeping thereof, the inner wing portion including a wing root section (4) having a far aft maximum thickness position (14) coupled with high camber in the region of said maximum thickness position, said wing root section (4) further including a negatively cambered leading edge portion (10) and a nose-down twist configured to suppress high leading edge velocities, the combination of thickness and camber forms aft of the leading edge region (10) causing the flow to accelerate until a maximum velocity is reached relatively far back on the wing.

REFERENCES:
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patent: 2709052 (1955-05-01), Berg
patent: 3005496 (1961-10-01), Nichols
patent: 3476336 (1969-11-01), Hertel
patent: 3635590 (1972-01-01), Phillips
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patent: 4858852 (1989-08-01), Henne et al.
patent: 4949919 (1990-08-01), Wajnikonis
P. A. Henne, "Inversse Transonic Wing Design Method", Journal of Aircraft, vol. 18, No. 2, Feb. 1981, pp. 121-127.

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