an unmanned aerial vehicle is an unmanned aerial vehicle operated by a radio remote control device or its own program control device. it uses aerodynamics to provide the required lift for the aircraft, and can be automatically or remotely guided; it can be used both for one-time use and for recycling; capable of carrying both lethal and non-fatal payloads. at present, the drone market is in full swing, and chinese products occupy a dominant position in the international market. the fet is also required to be installed on the drone to improve its performance. the energy-saving characteristics of the fet have a certain effect on extending the voyage of the drone.