|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||416/4 ; 416/39|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 25 인용 특허 : 0|
Electrically deformable material such as piezoelectric material is used to deform a deflectable flap on an airfoil such as a helicopter blade. The electrically deformable material is controlled to deflect the flap in a manner to control vibrations transmitted from a helicopter blade to the helicopter air frame. In a preferred embodiment, the electrically deformable material and mechanical linkages are segmented along the length of the rotor blade. In this way, differential actuation of the deformable elements results in variable flap deflections along th...
An aerodynamic control device comprising: an airfoil having a spar at the leading edge and a deflectable flap at the trailing edge, and at least one deformation member comprising an electrically deformable material, said member being mounted within the airfoil and cantilevered to the spar of the airfoil at one end and attached to the deflectable flap at the other end so that electrical stimulation of the material causes the deformation member to bend to deflect the flap, wherein the deformation member includes an inert plate and a plate comprising an ele...