旋翼机在飞行中以常规的螺旋桨来驱动并靠惯性滑行支持的，提供升力的水平旋转仪 An aircraft powered by a conventional propeller and supported in flight by a freewheeling, horizontal rotor that provides lift.
襟翼飞机后翼上最初用来增加上升力或拖力的可灵活控制的辅助翼 A variable control surface on the trailing edge of an aircraft wing, used primarily to increase lift or drag.
