摘要
未来的空间活动将需要使用比现有的运载工具更经济和更可靠的空间运输系统。装有吸气式发动机、水平起飞的空天飞机能够完成多种飞行任务,是欧美正在积极研制的一种系统。本文根据飞行任务对技术的要求及目前的技术基础情况对单级入轨和双级入轨两种空间运输系统进行了较全面的对比。
Compared with existing systems, space transportation systems for future missions must be more economical and reliable. Horizontal take-off space planes with air-breath-ing engines, which are currently under study and development in the USA as well as in Europe, will be capable of performing multiple missions. The article below presents an overall comparison between two different concepts, the one-stage-to-orbit concept and the two-stage-to-orbit concept.
