Static Pressure Measurement of High Enthalpy Flowin Arc-Heated Wind Tunnel

NAL has been promoting diagnostic study of the 750kW arc-heated wind tunnel flow to characterize various important flow parameters, such as heat flux and pressure, necessary for determining materials test conditions. In those measurement techniques, static pressure data is one of the most difficult experimental items to obtain. In this report, design of a static pressure probe and measurement system for the pressure, calibration system and the results, and evaluation of response time of the pressure are presented. The results show that static pressure distributions of the high enthalpy air flow in the NAL/NASDA 750kW arc-heated wind tunnel were obtained with good accuracy using these techniques.