2003年2月1日,美国哥伦比亚号航天飞机完成太空飞行任务后,返回时爆炸解体,7名航天员全部遇难,这是人类航天史上又一严重地灾难。人们在对遇难航天员深深惋惜怀念的同时,也在关注着新一代(第二代)可重复使用航天运载器如何发展,本刊特约杨勇、王小军两位博士就这方面的情况给读者作一介绍。 On February 1, 2003, after the U.S. space shuttle Columbia completed its space mission, the explosion exploded on the return trip and all seven astronauts were killed. This is another serious disaster in the history of human spaceflight. While deeply regretting the memory of the astronauts, people are also paying attention to how the new generation (second generation) reusable space vehicle develops. The two doctors, Yang Yong and Wang Xiaojun, give readers Make an introduction.