模拟地球同步轨道粒子辐照环境对若干航天器热控涂层太阳吸收率的影响

文章是用开发的一个计算机数字计算的模型来计算粒子辐照下材料中的吸收能量剖面.文章介绍了航天器的热控涂层试验,用改变入射质子和电子能量的办法,模拟同步轨道辐射环境。通过对几种涂层(白漆、黑漆、二次表面镜等)分别进行3年和10年的轨道模拟环境试验,并在真空环境中和空气中测量其反射率的变化,确定了电子和质子对这些材料所产生的影响.

PARTICULATE RADIATION EFFECTS, SIMULATING SYNCHRONOUS ALTITUDE, ON THE SOLARABSORPTANCE OF SEVERAL SPACECRAFT THERMAL CONTROL SURFACES

A computerized model has been developed which allows the calculation of the absorbed energy profile in materials exposed to particulate radiation.Experiments were designed and conducted on spacecraft thermal coating to simulate an absorbed dose profile from synchronous altitude radiation by varying the energy of incident electrons and protons.Several types of coating were exposed to three and ten years simulated orbiting environment and changes in reflectance were measured in vacuum and air.Materials tested include white paints,black paint,metallized second surface mirrors (Kapton,Teflon FEP and quartz),and metals.Relative influence of electrons and protons was determined.