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本文在简要评论欧洲正在发展的航天运输系统后,介绍了各种飞行器所需的几种可能的推进系统。重型运载火箭(HLLV)的大型火箭发动机及载人可重复使用飞行器的高性能吸气/火箭组合发动机可望在欧洲于下世纪应用。
After briefly commenting on the evolving space transportation system in Europe, this article presents several possible propulsion systems for various types of aircraft. Large-scale rocket engines from heavy-duty launch vehicles (HLLVs) and high-performance aspirated / rocket-combined engines with manned reusable vehicles are expected to be applied in Europe in the next century.