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随着空间技术的发展,发动机地面试验技术愈来愈显得重要,经常要了解试验对象某一部位的总温,以利于计算产品的功率、效率和温度分布情况。其使用场合的条件十分恶劣,如温度高(上千度),燃气流动速度大(数百米/秒),压力高(近百大气压力),测量时间短(几百秒),反应速度快(时间常数<1秒),振动大(数百克),介质有腐蚀……等,有别于一般工业上的温度测量。
With the development of space technology, engine ground test technology is more and more important. It is often necessary to know the total temperature of a certain part of the test object to facilitate calculation of product power, efficiency and temperature distribution. The use of the conditions are very poor, such as high temperature (thousands of degrees), gas flow velocity (hundreds of meters / second), high pressure (nearly a hundred atmospheres), measurement time is short (hundreds of seconds), the reaction speed (Time constant <1 second), large vibrations (hundreds of grams), corrosion of the medium ... and so on, different from the general industrial temperature measurement.