Tailstock type vertical takeoff and landing unmanned aerial vehicle and flight control method

Abstract

The invention relates to a tailstock type vertical takeoff and landing unmanned aerial vehicle and a flight control method. The unmanned aerial vehicle comprises a wing-shaped fuselage, wings, four ducted propellers on upper and lower sides of the fuselage, as well as upper vertical fins and lower wingtip undercarriages at the end parts of the wings, wherein drive force is provided to the ducted propellers by batteries or an engine inside the fuselage. The flight control method of the tailstock type vertical takeoff and landing unmanned aerial vehicle comprise methods in a takeoff stage, a takeoff transition stage, a flat flight stage, a landing transition stage and a landing stage. Quad-rotor and fixed-wing flight modes are both achieved, so the loadability of the vertical takeoff and landing aircraft can be improved; by a unique takeoff and landing manner and layout, flight is smoother and more steady; flat flight speed is quick; the stall problem in takeoff and landing transition stages and a flat flight transition stage is better solved.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicles, in particular to a tail-sitting vertical take-off and landing unmanned aerial vehicle and a flight control method. Background technique [0002] The helicopter platform is complex, the control is difficult, and the flight speed is slow; the multi-rotor platform is simple and easy to control. The appearance of the multi-rotor solves the complicated over-control problem of the helicopter, but the same as the helicopter, the disadvantage is also slow. [0003] However, current rotor or fixed-wing aircraft can solve the speed problem to a certain extent. Taking no Osprey tilt-rotor aircraft as an example, its speed is close to 400 kilometers or hours. However, the technology is relatively complicated. Due to the limitation of the stall speed of level flight from the vertical take-off and landing section to the level flight section, the take-off transition section and the landing tran...

AI Technical Summary

Problems solved by technology

At present, the vertical take-off and landing UAVs on the market are generally multi-rotor, flying wing and other layouts, with low flight speed and low efficiency; although fixed-wing UAVs fly fast and have high efficiency, their take-off and landing process The requirements for the environment are particularly high, and a relatively gentle and long-distance takeoff and landing runway is required. It cannot take off and land normally in some venues with harsh environments.

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