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以某型自转旋翼机为对象,研究了格尼襟翼对自转旋翼机飞行动力学特性的影响。通过数值计算得到自转旋翼二维翼型加装格尼襟翼的气动力系数,采用叶素理论并结合动态入流理论建立自转旋翼动力学模型,在此基础上建立了旋翼机加装格尼襟翼的飞行动力学模型。研究表明,格尼襟翼对自转旋翼机的纵向配平特性有较大影响,纵向周期变距操纵量增大,旋翼稳定转速减小;格尼襟翼基本不影响全机稳定性,同时还能够达到减小功率消耗的效果。
Taking a rotary autopilot as an example, the effect of Gurney flap on the flight dynamics of autorotating rotorcraft is studied. The aerodynamic coefficient of Gurney flap with self-rotating rotor two-dimensional airfoil is obtained by numerical calculation. The kinematic model of rotor is established by using the theory of vane element and dynamic in-flow theory. Based on this, Wing’s flight dynamics model. The research shows that the Gurney flap has a great influence on the longitudinal trim of the autorotating rotorcraft, and the control of the longitudinal periodic pitch increases, and the stable rotational speed of the rotor decreases. The Gurney flap basically does not affect the stability of the whole machine, Achieve the effect of reducing power consumption.