| 摘要 |
An airfoil launching system having a rod with a structure attached to a first end of the rod. A pusher holds a ring airfoil and has a sufficient coefficient of friction that the ring airfoil will generally rotate with the pusher and is rotatably and slidably mounted on the rod. Propulsive force is provided by resilient bands connected to the structure outward from the rod and to the pusher outward from the central aperture of the pusher. A string guide is rotatably attached to the rod and has apertures through which generally non-resilient cords the first ends of which are attached to the pusher outward from the central aperture. The second ends of the generally non-resilient cords are connected to each other, preferably with a pliable grip.
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