Abstract: The present disclosure provides a model aircraft, comprising a body, a wing and a vertical tail. At least one first male female buckle is provided between the wing and the body. The wing is configured to be securely mounted on the body by the first male female buckle. At least one second male female buckle is provided between the vertical tail and the body. The vertical tail is configured to be securely mounted on the body by the second male female buckle. In the disclosed model aircraft, the wing and the vertical tail can be removably assembled on the body by multiple male female buckles. It is structurally simple; it is convenient to disassemble the aircraft during storage to save space, and it is convenient and fast to assemble the aircraft during use, thereby improving the ease of assembly.

Abstract: The present disclosure provides a parachute control system for an aircraft which comprises a sensor device, a first control device, a second control device and a drive device. The sensor device is configured for sensing flight states of the aircraft, for converting the flight states to a sensor signal, and for transmitting the sensor signal to the first control device. The first control device is electrically connected to the sensor device for receiving the sensor signal, and is configured for judging whether the aircraft is in a normal flight state based on the sensor signal. If the aircraft is in an abnormal flight state, the first control device is configured to control the parachute to open and to terminate the operation of the aircraft. The present disclosure also provides a parachute control method for an aircraft.

Abstract: This disclosure provides an aircraft vehicle, which comprises a circuit board, and at least one power component mounted on said circuit board. The at least one power component comprises a rotor, a drive unit and a fixing sleeve. Said drive unit is electrically connected to said circuit board and drives the rotor to rotate. Said fixing sleeve comprises a receiving space with an opening at a top. Said fixing sleeve comprises at least one first stopping piece and at least one second stopping piece projected on an outer surface of the fixing sleeve. Said drive unit is accommodated in the receiving space and is secured in the fixing sleeve. Said circuit board comprises at least one positioning hole corresponding to the power component. The fixing sleeve is configured to pass through the positioning hole so that the circuit board is retained between the first stopping piece and the second stopping piece. This disclosure also provides a fixing sleeve.