Actire passive dual purpose net cloth blade

A paddle consists of tension arm, keel, frame, net, net headrope and group of cloth pieces, of which keel is fixed on tesion arm, net headrope is fixed on keel, ent is fixed on headrope or keel, cloth pieces are fixed on one side face of paddle net, fixing rim is a rim for cloth pieces and is placed in multidirection or direction vertical to main flying direction and frame is headrope or thin rod executed with prestressing force at longitudinal direction. The cloth piece sticks on the net to block wind passing through the net when wind blows from a side with cloth to a side without cloth, otherwise, the cloth piece flys away from net face to let wind pass through the net face. 本发明涉及一种主动被动两用网布桨叶，属于风力发动机及交通工具领域。该桨叶由力臂、龙骨、边框、网、网纲、一组布块等构成。其中龙骨固定在力臂上，网纲固定在龙骨上，网固定在网纲或龙骨上，布块固定在桨叶网面一侧，固定边为布块的一条边，固定边在网面上多向布置或与主导飘向大体垂直的方向布置。网布桨叶边框为纵向施加预应力的网纲或细杆。当风从网面有布一侧吹向无布一侧时，布块贴网阻挡风通过网面；当风向相反时，布块飘离网面，风通过网面。该桨叶结构轻巧、功效高，可用作为垂直轴风力机桨叶、扑翼飞机扑翼、飞机或车辆特别是有轨车的驱动桨叶。