Variable camber control of airfoil

Details Variable camber control of airfoil Variable camber control of airfoil

1991-09-20

1992-09-29

Barefoot, Galen

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

60527, 244 75R, 244 1725, 416 24, B64L 344

Patent

active

051508648

ABSTRACT:
An airfoil camber control apparatus utilizes a cable of shape memory alloy affixed at its ends to a front interior portion of the airfoil. A tensioning system is connected to a rear interior portion of the airfoil and to the cable. When electrical current is applied to the cable to heat it, it returns to its remembered, shorter length, thereby applying tension to the tensioning system to alter the position of the rear portion of the airfoil relative to the front portion.

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patent: 4811564 (1989-03-01), Palmer

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