【摘要】 以空间液氦制冷器为研究对象,介绍了空间液氦制冷器隔热屏蔽系统的设计思路以及方法,设计了一套以气冷屏为主、包括真空多层绝热和隔热支撑结构在内的隔热屏蔽系统,并编制数值计算程序对其进行了优化。计算结果显示了气冷屏尺寸是影响制冷器内部温度场以及内胆热负荷的关键因素,提出了气冷屏尺寸的优化结果。更多还原

【Abstract】 Base on the mission needs analysis and especial requirement for space target,the paper introduces the principle and method of designing a thermal insulation system,consisted of vapor cooled shield,vacuum adiabatic multilayer,low conductivity support structure.The calculation program was prepared to optimize it.The result shows the size of vapor cooled shield is the key factor which impacts the internal temperature field and the heat load of the cryostat.It presents the optimized size.更多还原