尽管有关航天飞机防热系统的防热瓦已有许多文献作过介绍,但很少有文献谈及防热毡,而这种防热毡已经取代了轨道器机身上的大部分白色防热瓦。这种称为“先进的柔性多次使用表面绝热层”(AFRSI)的被状防热毡是把二氧化硅纤维絮夹在编织的二氧化硅(石英)织物中制成的,将这些防热毡用二氧化硅纤维缝织在一起并使之增强,所以它看上去像毡子一样。 Although a great deal of literature has been written about heat shields for shuttle heat-protection systems, few papers have dealt with heat-proof felts, which have replaced most of the white heat-shields on the orbiter fuselage watt. This so called “advanced flexible multiple-use surface insulation” (AFRSI) quilt-like felt is made by wadding silica fibers in a woven silica (quartz) fabric. These anti-fouling The hot mat is stitched together and reinforced with silica fibers, so it looks like a mat.