Unmanned aerial vehicle based on multi-combination type power system and flight method of unmanned aerial vehicle

The invention discloses an unmanned aerial vehicle based on a multi-combination type power system. The unmanned aerial vehicle comprises a vehicle body, wings, a tail wing and vehicle wheels. The twowings are arranged and perpendicularly arranged on the left side and the right side of the vehicle body, the tail wing is connected to the rear end of the vehicle body, the vehicle wheels are connected to the lower end of the vehicle body, the front side of each wing is connected with multiple short engine compartments, the rear side of each wing is connected with a long engine compartment, the front side of each short engine compartment is connected with a front propeller, the upper end of each long engine compartment is connected with an upper propeller, the lower end of each long engine compartment is connected with a lower propeller, and each short engine compartment is connected with a corresponding steering engine. The unmanned aerial vehicle has the advantages that in a vertical take-off and landing mode, t