drone

Abstract

The invention provides an unmanned aerial vehicle. Among them, the deflection of the upper and lower winglets of the winglet around its own axis not only reduces the induced drag of the UAV wing, but also can offset the change of longitudinal lift according to the combined deflection of the upper and lower winglets to control the UAV. The man-machine heading, which plays the role of the rudder of the UAV, has the effect of killing two birds with one stone. It has broad application prospects in the field of UAVs and traditional fixed-wing UAVs.

Description

technical field [0001] The invention relates to the technical field of aircraft airfoil design, in particular to an unmanned aerial vehicle. Background technique [0002] The lift of the drone comes from the pressure difference between the upper and lower surfaces of the wing, but near the wingtip, because there is no division of the wing, the high-pressure airflow of the lower wing will flow around the wingtip to the upper surface, thus forming the "lift" By-product" - wingtip vortex, wingtip vortex will weaken part of the lift of the wingtip, and then generate induced drag, affecting the stability of the UAV. The winglet is like a wall, which can hinder the upward flow of high-pressure airflow on the lower wing, weaken the wingtip vortex, reduce the induced resistance of the drone, reduce fuel consumption, and improve the range. [0003] In the process of realizing the present invention, the applicant found that the winglets in the traditional technology are all fixed, an...

AI Technical Summary

Problems solved by technology

[0003] In the process of realizing the present invention, the applicant found that the winglets in the traditional technology are all fixed settings, and the induced drag and longitudinal lift of the UAV wings cannot be flexibly adjusted

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