US Patent 11649054 Bistable package delivery systems for aerial vehicles

Package delivery systems and methods may include a bistable beam coupled to an aerial vehicle, a bistable hook coupled to an end of the bistable beam, and a package carried by the bistable hook. The bistable beam may move between a reeled position and an extended position, and the bistable hook may move between a closed position and an open position. In addition, the bistable beam may include frangible connections or portions. Further, release or disconnection of frangible connections or portions of the bistable beam, as well as operations of the bistable hook, may be effected by passive or active methods.