The invention relates to a high-efficiency multi-rotor unmanned aerial vehicle propeller which is characterized in that the position, 35% R away from the blade root, of a blade of the propeller is the maximum chord length and the maximum mounting angle position, and the chord length and the mounting angle from the blade root to the maximum chord length position are gradually increased; the chord length and the mounting angle from the maximum chord length position to the blade tip are gradually reduced; in a plane perpendicular to the rotating shaft, a straight line is formed from the position 40% R away from the blade root to the front edge of the blade tip; wherein R is the rotation radius of the propeller, the spanwise direction is the direction from the blade root to the blade tip, the airfoil is the inner contour of the cross section of the blade at any position in the spanwise direction, the chord length C is the distance between the front edge and the rear edge of the position where the airfoil is located, and the installation angle alpha is the included angle between the profile of the airfoil and the rotor plane of the blade. The aerodynamic efficiency is improved, and the endurance of the multi-rotor unmanned aerial vehicle is prolonged.
本发明涉及一种高效率多旋翼无人机螺旋桨,所述螺旋桨的桨叶,距桨叶根35%R的位置为最大弦长和最大安装角位置,从桨叶根到最大弦长位置的弦长和安装角均逐渐增大;从最大弦长位置到桨叶尖的弦长和安装角均逐渐减小;在垂直于旋转轴的平面内,从距桨叶根40%R的位置到桨尖的前缘为一条直线;其中,R为螺旋桨旋转半径,展向为从桨叶根到桨叶尖的方向,翼型为桨叶在展向上任意位置的横截面内轮廓,弦长C为翼型所处位置的前缘与后缘之间的距离,安装角α为翼型剖面相对桨叶旋翼平面的夹角。本发明提高了气动效率,提高多旋翼无人机的航时。
High-efficiency multi-rotor unmanned aerial vehicle propeller
一种高效率多旋翼无人机螺旋桨
2023-08-18
Patent
Electronic Resource
Chinese
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