一、前言电弧风洞试验段气流的总压、静压和质量流量是校准试验段气流中的重要参数。由于空气在电弧加热器中加热的不均匀性、非型线喷管的不均匀膨胀、喷管壁的冷却作用以及喷管壁附面层的影响,试验段气流参数沿气流的径向分布是不均匀的。同时,由于锥形喷管气流的发散作用,气流参数沿气流轴向 I. INTRODUCTION The total pressure, static pressure and mass flow of the airflow in the experimental section of the arc wind tunnel are important parameters in calibrating the airflow in the test section. Due to the uneven heating of the air in the arc heater, the non-uniform expansion of the non-linear nozzle, the cooling effect of the nozzle wall and the influence of the nozzle wall, the radial distribution of the parameters in the test section along the airflow is Inhomogeneous. At the same time, the airflow parameters are along the axial direction of the airflow due to the divergence of the conical nozzle airflow