Short-distance slide landing method of unmanned aerial vehicle

Abstract

The invention discloses a short-distance slide landing method of an unmanned aerial vehicle. The short-distance slide landing method comprises the steps of S1, entering an automatic slide landing function; S2, making the unmanned aerial vehicle fly above a preset slide landing track; S3, reducing the height of the unmanned aerial vehicle, and determining a fact that the height of the unmanned aerial vehicle reaches a lower limit of a safe height; S4, planning a four-side course and utilizing the slide landing track as the fourth side of the four-side course; S5, making the head of the unmanned aerial vehicle be same with the first side of the four-side course and making the unmanned aerial vehicle fly according to the four-side course; S5, reducing the rotation speed of an engine when the unmanned aerial vehicle flies to the third side of the four-side course; S6, after the unmanned aerial enters the fourth side of the four-side course, namely the slide landing track, shutting down the engine, reducing a pitch angle and reducing the height of the unmanned aerial vehicle in a diving manner; S7, determining a fact that the height of the unmanned aerial vehicle is lower than the safe height; S8, reducing the speed of the unmanned aerial vehicle and controlling a flight direction; and S9, realizing safe landing of the unmanned aerial vehicle. The short-distance slide landing method has advantages of no requirement for experience and control of a controller, basically no influence by abnormal weathers, and relatively low requirement for a place.

Description

technical field [0001] The invention relates to the field of unmanned aerial vehicles, in particular to a short-distance downhill method for unmanned aerial vehicles. Background technique [0002] The current landing methods for fixed-wing UAVs are mainly: [0003] (1) The pilot controls the fixed-wing aircraft to land normally [0004] (2) The pilot judges the wind direction in the air, relies on his own experience, and manually controls the parachute device through the remote control to achieve the parachute mode [0005] Among the above methods, the first method requires the drone operator to have strong control ability and experience. Especially in the environment of abnormal weather, since people can only judge the flight status of the UAV by the external environment, if the operator makes a wrong operation, it may damage the UAV or even cause harm to the ground personnel. [0006] The second method puts higher requirements on the operator, not only to estimate the d...

AI Technical Summary

Problems solved by technology

If the operator is inexperienced, the drone may land in an unknown place under the influence of a slight wind

Although under the protection of the parachute, it will not hurt people, but the search work of the drone is quite difficult

[0007] To sum up, the current landing methods of fixed-wing UAVs place too many requirements on the personnel and environment.

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