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六十年代初兴起的载人航天开辟了人类飞出地球、遨游宇宙的新纪元。目前,载人航天事业已从试验阶段转向实用阶段。载人航天活动是一个经济效益极高、开发潜力甚大的发展领域。载人航天器载人航天器现正分别朝着两个方向发展,即天地运输系统和空间站。天地运输系统主要包括载人飞船、航天飞机、空天飞机。在这方面美国处于领先
The rise of man-made space in the early 1960s opened up a new era in which humans flew out of the earth and travel the universe. At present, the manned space project has shifted from the pilot phase to the practical phase. Manned space activities are an area of development with high economic efficiency and great potential for development. Manned spacecraft manned spacecraft are now being developed in two directions, namely, Tiandi transport system and space station. World transportation system mainly includes manned spacecraft, space shuttle, space plane. The United States is in the lead in this regard