CYS-40WPturbojet engine is an one-belt miniature jet-powered engine with centrifugal compressor and radial turbine. Its maximum net thrust is 40daN. This engine adopts convenient and reliable compressed air or powder start technology and open lubrication designed by hybrid fuel system. Its ECU can realize the monitoring and protection of engine in each condition. The operation is simple and maintenance is reliable. This engine can provide reliable continuous power for small-sized unmanned aerial vehicle, target drone or small-sized missile. It is an ideal and economical miniature aerial jet-powered device.