Patent ID: 6231013
Filing Date: 2001-05-15
Classification: B64C,Y02T

Abstract:
An airfoil member comprising:an airfoil body;a flap tiltably connected to said airfoil body so as to be tiltable about a tilting axis relative to said airfoil body and so as to form at least a portion of a trailing edge of said airfoil member;a first piezoelectric actuator that is arranged in an interior of said airfoil body and that is coupled to said flap so as to be adapted to tiltingly move said flap in a first direction about said tilting axis relative to said airfoil body; anda second piezoelectric actuator that is arranged in said interior of said airfoil body and that is coupled to said flap so as to be adapted to tiltingly move said flap in a second direction opposite said first direction about said tilting axis relative to said airfoil body, such that said first and second piezoelectric actuators are arranged and connected to said flap in a counter-acting manner.