METHOD FOR ENHANCEMENT OF THE ROLLING MANEUVER OF A FLEXIBLE WING

A technique for augmenting the aileron to increase the roll rates of a high-performance aircraft at high dynamic pressures for enhancement o f the rolling maneuver is examined, Antisymmetric twist and camber dis tribution on a realistic flexible wing is determined to counteract the detrimental twisting moment of the aileron rotation to achieve recove ry of the lost roll rates at high dynamic pressures, A method for pres cribing the antisymmetric wing twist and camber distribution by revers ing the twist and camber resulting from use of the aileron only is des cribed, The retwisting and recambering of the wing is achieved by prov iding control forces obtained from a technique referred to as fictitio us control surfaces, The technique of retwisting and recambering a fle xible wing demonstrates a full recovery of roll rate at all dynamic pr essures. Here, a full-scale realistic wing is considered for the asses sment of strain energy as a measure of necessary control energy requir ed to produce the antisymmetric twist and camber deformation on the ai leron-twisted wing to recover the lost roll performance.