The invention discloses a rotor wing pressure measuring system based on an air slip ring. The rotor wing pressure measuring system comprises a rotor wing pressure measuring system stator and a rotor wing pressure measuring system rotor, the rotor wing pressure measuring system stator is composed of a supporting rod, an air slip ring stator and a servo motor stator, and the supporting rod is fixedly connected with the air slip ring stator and the servo motor stator; the rotor wing pressure measuring system rotor is composed of a servo motor rotor and an air slip ring rotor, and the servo motorrotor is fixedly connected with the air slip ring rotor through a connecting piece; the air slip ring rotor is connected with the supporting rod through a bearing; a rotor wing with a pressure measuring hole machined in the surface is fixedly connected with the servo motor rotor, a pressure measuring hose is led out from the root of the rotor wing and connected with an air slip ring rotor air pipeconnector, the air slip ring rotor air pipe connector is communicated with an air slip ring stator air pipe connector through an air path, and the air slip ring stator air pipe connector is connectedwith a pressure measuring system through a hose. According to the system, a pressure signal is transmitted to the static air slip ring stator in the rotating process of the rotor wing, so that the data of the surface pressure of the rotor wing in motion are recorded.

本发明公开了一种基于气滑环的旋翼测压系统，包括旋翼测压系统定子和旋翼测压系统转子；所述旋翼测压系统定子由支撑杆、气滑环定子和伺服电机定子组成，支撑杆与气滑环定子以及伺服电机定子固连；所述旋翼测压系统转子由伺服电机转子、气滑环转子组成，伺服电机转子与气滑环转子通过连接件固连；所述气滑环转子与支撑杆通过轴承相连；表面已经加工好测压孔的旋翼与伺服电机转子固连，从旋翼根部引出测压软管，接至气滑环转子气管接口，气滑环转子气管接口与气滑环定子气管接口气路连通，气滑环定子气管接口与测压系统通过软管连接。该系统在旋翼旋转过程中将压力信号传递到静止的气滑环定子上，从而实现将运动中旋翼表面压力的数据记录下来。