摘要
空间相机的热平衡试验中,一般采用红外笼—热流计的闭环控制系统来模拟相机进光口处的外热流。为研究该种热流模拟方法对相机温度场的影响,建立了简化的模型进行分析。分析结果表明,红外热流模拟对相机温度场的影响体现在相机整体温度水平和光学件温度均匀性两个方面。对于有精密控温要求的空间相机来说,这一影响产生的误差是必须考虑的。
In the thermal balance test of a space camera, a closed system of IR array and radiometer is generally used to simulate the external heat flux at the camera window.A simple model is constructed for analyzing the influence of IR flux on the temperature of the camera with this method.The results show that the simulated IR heat flux has an influence both on the overall temperature level of the camera and on the temperature uniformity of its optical lens.
出处
《航天器环境工程》
2007年第3期164-167,6,共4页
Spacecraft Environment Engineering
关键词
空间相机
温度
热平衡试验
红外笼
热流计
space camera
temperature
thermal balance test
infrared array
infrared radiometers
