Unmanned aerial vehicle empennage

Abstract

The invention relates to the technical field of empennages of unmanned aerial vehicles, in particular to an unmanned aerial vehicle empennage which comprises a horizontal empennage, a vertical empennage and a sliding rod, a part of the sliding rod is arranged in an unmanned aerial vehicle body, and the sliding rod in the unmanned aerial vehicle body is slidably sleeved with a sliding cylinder; a horizontal oil cylinder and a vertical oil cylinder are arranged in the unmanned aerial vehicle body. One end of a piston rod of the horizontal oil cylinder is hinged to the end of the sliding rod. The vertical oil cylinder is hinged to the middle of the sliding cylinder. The horizontal oil cylinder and the vertical oil cylinder are controlled by a control system; a piston rod of the vertical oil cylinder is provided with a first displacement sensor and a first force sensor which are connected with a first controller; a piston rod of the horizontal oil cylinder is provided with a second displacement sensor and a second force sensor which are connected with the second controller; the unmanned aerial vehicle is further provided with a flight state monitoring module. The position of the empennage of the unmanned aerial vehicle relative to the unmanned aerial vehicle body is accurately and finely adjusted in real time through axial stretching and vertical swinging, and it is guaranteed that the unmanned aerial vehicle adapts to a new flight environment and a new flight attitude.

Description

technical field [0001] The invention relates to a UAV tail, in particular to a control system and a control method for the relative position of the UAV tail relative to the UAV body. Background technique [0002] The tail of the drone mainly plays a balancing role. The drone relies on the wings to generate lift to fly, but the center of gravity of the lift of the drone often does not coincide with the center of gravity of the aircraft. Moment, and then make the aircraft pitch up or pitch down, in order to balance this moment, the horizontal tail is required to generate an opposite moment to balance the aircraft. Another important function of the tail of the UAV is to control the deflection of the aircraft. Using the principle of aerodynamics, the horizontal tail can be used to control the pitch flight of the UAV, and the vertical tail is used to control the left and right deflection flight of the UAV. [0003] The position of the tail fin of the existing UAV relative to the...

AI Technical Summary

Problems solved by technology

[0003] The position of the tail of the existing UAV relative to the main body of the UAV is generally fixed and cannot be adjusted and controlled.

Changes in the external flight environment such as the flight speed, air pressure, air temperature, and wind speed of the UAV, as well as the adjustment of the flight attitude, the lift moment of the air wing also changes in real time, and the position of the tail relative to the main body of the UAV cannot be adjusted, which will cause The torque provided by the empennage cannot best balance the aircraft, which leads to a decrease in the handling performance of the aircraft, and the safety cannot be guaranteed, and the flight resistance is not controlled to the minimum, which increases energy consumption and affects the cruising range of the UAV.

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