无水冷条件下温度与热流复合传感器设计与试验

针对飞行试验中参数测量需求，研究长时间飞行过程中无水冷条件下传感器表面温度和热流的快速响应测量技术。在分析环境特点和测量需求的基础上，设计一种自锁紧固的柱塞式复合传感器，根据圆柱体侧面的温度响应处理得到表面温度和热流。提出一种基于最小二乘法的多项式拟合数据处理方法，有限元数值分析表明，该方法能够获得更好的数据抗畸变和抗噪声能力。标定该热流传感器的热流测量结果，得到不锈钢传感器的98%热流响应时间约为0.7 s，热流测量结果受到侧向隔热结构的影响明显。表面温度对比试验结果表明，该传感器所测结果能够反映表面温度对热流的影响。

Design and Test of a Hybrid Sensor for Temperature and Heat Flux Measurement without Water-cooling

A method for rapid measurement of surface temperature and heat flux in the absence of water-cooling during long-time flight is studied for the parameter measurement demands in hypersonic flight test. Based on the analysis of environment characteristics and measurement demands, a novel plug hybrid sensor with self-fastening structure is designed, which could be used to achieve the surface temperature and heat flux data according to the measured result of temperature on the side of a cylinder. A polynomial approximation method based on the least square method is presented. FEA simulation results show that better anti-distortion and anti-noise performances could be achieved using the proposed method. The sensor is calibrated in an arc lamp heat flux sensor calibration system for heat flux verification. 98% response time of stainless steel sensor is about 0.7s. In addition, the measured results of heat flux are affected evidently by the adiabatic structure. The comparative test results of surface temperature show that the data achieved by the sensor could reflect the effect of surface temperature on heat flux.