| 摘要 |
An autorotative flyer comprises a circular root portion integral with a wing portion; the root being generally circular and providing a counterweight of from 55-85%, preferably 70-72%, of the total weight of the flyer and locating the center of gravity of the flyer behind the leading edge of the wing a distance equal to from 28-29% of the mean aerodynamic chord of the wing and at a spanwise distance from the root end of the flyer of from 10-21% of the root end to wing tip span; the wing of the flyer having curved leading and trailing edges and a curved tip with an integral spar along the leading edge and a wing area providing a wing loading of not more than about 0.5 lbs./ft2; and, optionally, scallops on the trailing edge of the wing and a vane on the edge of the root section concentric with the center of gravity.
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