Unmanned aerial vehicle and wing deicing device thereof

Abstract

The invention discloses an unmanned aerial vehicle and a wing deicing device thereof. The wing deicing device comprises a deicing sleeve, at least one nitrogen cylinder and a reversing valve, the deicing sleeve sleeves the tail part of a wing, the nitrogen cylinder is communicated with the deicing sleeve through a gas delivery pipe, the reversing valve is arranged on the gas delivery pipe, and the reversing valve is provided with an exhaust port. When the reversing valve is located at a first position, the nitrogen cylinder is communicated with the deicing sleeve, nitrogen is continuously filled into the deicing sleeve through the nitrogen cylinder, an ice layer at the tail of the wing is removed through the nitrogen, and the deicing purpose is achieved; and when the reversing valve is located at a second position, the nitrogen cylinder is disconnected from the deicing sleeve, the deicing sleeve is communicated with the exhaust port, and nitrogen in the deicing sleeve is exhausted from the exhaust port, so that the nitrogen is prevented from influencing flying of the wings. The deicing sleeve is alternately inflated and deflated through the reversing valve, the tail of the wing is deiced according to needs, it is avoided that an ice layer on the tail of the wing influences safe flight of the wing, and the flight safety is improved.

Description

technical field [0001] The invention relates to the field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle and a wing deicing device thereof. Background technique [0002] Affected by meteorological conditions, during the flight of the UAV, the supercooled water droplets in the clouds will freeze on the surfaces of components such as aerodynamic surfaces, radomes, wings or windshield glass, causing ice layers to form on the surfaces of these components. Taking the wing as an example, the ice layer on the surface of the wing will make the surface of the wing rough and the frictional resistance will increase. The ice layer will also increase the chord length of the wing, decrease the relative thickness, change the position of the maximum thickness, change the maximum camber point of the airfoil, and decrease the maximum lift coefficient. However, the decrease in lift force and increase in drag force will reduce the take-off acceleration of the UAV and ...

AI Technical Summary

Problems solved by technology

However, the decrease of lift force and the increase of resistance will reduce the take-off acceleration of the UAV and increase the take-off angle of attack, resulting in a lower take-off speed and a higher risk of the UAV stalling and crashing

[0003] However, most of the existing UAVs use piston or turboprop engines, and the engine causes a small amount. It is difficult to remove the ice on the wing surface only by engine bleed air, and the flight safety is seriously affected.

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