US Patent 11548635 Unmanned flight equipment and delivery method

The unmanned flight equipment includes an aerial vehicle capable of flying in an unmanned manner; a linear member configured to be suspended from the aerial vehicle and to hold a delivery target at a lower end thereof; a contact detection unit configured to detect contact with the delivery target or contact with the linear member; and a separation unit configured to separate the delivery target or the liner member based on a detection result of the contact detection unit.