The spin, sometimes called the negative spin, occurs when the angle of attack of the canopy is increased and one side is stalled causing it to drop almost vertically and spin on its yaw axis.

• 旋转，有时候叫反向旋转，发生于当伞的攻角增加，而且单侧失速时，引起几乎垂直地下坠，同时绕著它的偏移轴心旋转。