Patent ID: 6478541
Filing Date: 2002-11-12
Classification: B64C,Y02T

Abstract:
An active control device for reducing undesirable effects generated by a rotorcraft having a rotor blade including a tip end, a root end, a leading edge, and a trailing edge, said rotor blade being attached at said root end to a rotor hub on said rotorcraft and extending radially outwardly therefrom, having a radius R and a chord C, such that when said rotor hub is rotatably driven, said rotor blade rotates about said hub through a 360 degree azimuth, said active control device comprising:a movable flap comprised of a plurality of segments which are each pivotally attached to said rotor blade trailing edge so that they each may be selectively independently deflected in both positive and negative directions; wherein a radially outer one of said flap segments has a smaller chord length than a radially inner one of said flap segments.