单喷嘴燃烧室传热特性的测量方法

Method for measurement of single-injector heat transfer characteristics

为开展燃烧室的传热特性等研究,采用了以紫铜作为材料的容热式推力室身部,通过测量热试车过程中身部壁温,来获得推力室内壁温度、热流沿轴向的分布。为测量数据设计了数据处理方法,以利用测得的温度值获得内壁温和热流值,且进行了主要误差估计。将该方法在气气喷注器推力室上进行了应用,研究了其传热特性。

In order to investigate the injector heat transfer characteristics, a method of measuring a series of wall temperature in cooper heat sink chamber was discussed. The temperatures and heat flux of the injector face and the hot-gas-wall of chamber can be obtained. The key parameters of the test article were presented, and technique requirements of the temperature sensor were described. A numerical calculation method was developed for this method to obtain the hot-gas-wall temperature and heat flux. And an application of this method on a gas-gas shear-coaxial injector hot-test was demonstrated.