要在外层空间的轨道上,离地面三万五千公里,设置一个直径有45米的通讯用反射器,这使工程师大伤脑筋。首先是如何将这庞然大物的构件运到太空,其次是如何安装。英国瑟雷大学空间结构研究中心找到了一个答案:采用折叠式的网架结构。网架的杆件先收缩成为一捆,用航天飞机运往空间轨道后,它就象伞一样张开而形成反射器。网 In the orbit of outer space, 35,000 kilometers from the ground, a communications reflector with a diameter of 45 meters was installed, which made the engineer troubled. The first is how to transport the massive components into space, followed by how to install them. The Centre for Spatial Structure Research at the University of Cere in the United Kingdom found an answer: a folded grid structure was used. The poles of the grid are first shrunk into a bundle. After being transported to the space orbit by a space shuttle, it will open like an umbrella and form a reflector. network