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研制飞机发动机时,确定燃油从液体转变为汽体的速度与温度的关系是决定发动机结构的一个关键问题。为取得该数据,在实验室中可通过同时测试一滴燃油汽化过程中的直径(体积)、时间和温度来实现。一般是用光学的方法测量燃油的体积,同时用笔录仪记录热电偶的电压变化曲线,然后手算出对应的温度值,从而得到燃油汽化的速度与温度的关系。由于热电偶电压与温度的关系是非线性的,需用插值法进行解算。即使
When developing an aircraft engine, determining the relationship between the speed at which fuel is converted from a liquid to a vapor and the temperature is a key issue in engine construction. To achieve this data, this can be done in the lab by testing the diameter (volume), time and temperature of a drop of fuel vaporized simultaneously. Generally, the volume of fuel is measured by optical method. At the same time, the voltage curve of the thermocouple is recorded by the recorder, and then the corresponding temperature value is calculated by hand to obtain the relationship between the speed of vaporization of the fuel and the temperature. Because the relationship between the thermocouple voltage and temperature is nonlinear, the interpolation method needs to be used to solve the problem. even if