The invention relates to an aviation dynamic differential pressure propeller. An airfoil profile of the aviation dynamic differential pressure propeller comprises an upper airfoil surface and a lower airfoil surface. The section lines of the airfoils are all composed of curves of a monotonically decreasing function from the front edge to the rear edge. The structure is simple, and when the lower wing surface does work on windward airflow, the flow speed is reduced, the static pressure intensity is increased, and upward thrust is generated; the upper airfoil does not do work, airflow flows back, static pressure is reduced, upward pulling force is generated by the airfoils, so that the lift force of the upper airfoil and the lower airfoil is upward at the same time, the sum of the lift force is larger than the lift force of an existing single-face airfoil, and then the efficiency of the propeller wing is further improved by optimizing the lift-drag ratio. A front edge point is accurately positioned by adopting a wing section line rear corner, a spanwise line, a relative velocity line and a backward moving distance, a shock wave is weakened to be low-sound-velocity object surface static pressure, and the damage effect of the shock wave is avoided.
本发明涉及一种航空动压差螺旋桨,其翼型包括上翼面和下翼面组成。其翼面截线均由前缘至后缘单调下降函数的曲线组成。本发明结构简单,在下翼面对迎风气流做功下,流速减慢,静压强增高,产生向上的推力;上翼面不做功,气流倒流,静压强减小,翼面产生向上的拉力,从而构成上、下翼面同时升力一致向上,二者升力之和大于现有的单面翼型升力,再经优化升阻比,桨翼效率得到进一步提升。采用翼截线后转角,和展向线用相对速度线与后移距离精准定位前缘点,弱化激波为低声速物面静压强,避免激波的毁坏作用。
Aviation dynamic differential pressure propeller
一种航空动压差螺旋桨
2024-01-12
Patent
Electronic Resource
Chinese