几种典型温度传感器跨超音速恢复特性校准

Recovery Characteristic Calibration of Several Typical Temperature Sensors under Transonic and Supersonic Conditions

介绍了跨、超音速条件下温度传感器恢复特性的校准设备与校准方法,采用反串、低流速原位互校等方法,针对几种典型结构的温度传感器进行了马赫数0.95~2.0条件下的恢复特性校准,并与美国航空航天局的校准结果进行了比较,结果表明,二者之间的相对偏差在0.1%~2.8%之间。通过校准实验揭示了跨、超音速条件下温度传感器恢复特性的相关规律,为高速气流温度的准确测量提供了依据。

The device and method of recovery characteristic calibration of temperature sensors under transonic and supersonic conditions are introduced in this paper.By using the method such as inverse series connection and local mutual correction at low flow speed,several typical temperature sensors are calibrated under conditions of Mach 0.95 to Mach 2.0,and the calibration results are compared with the results of NASA.Comparison results show that relative deviation between them ranges in 0.1%~2.8%.Some laws on recovery characteristic of temperature sensors under transonic and supersonic conditions are revealed through the calibration,which can provide basis for precise measurement of highspeed gas temperature.