可重复使用的运载器是 未来航天运输技术的发展方向，美国、欧洲和日本等都在为这种运载器做各种技术准备。欧洲由于欧洲有限的资金大都花在“阿里安”５火箭的研制上，所以，在可复用运载器技术开发方面开展的工作很少。实际上，欧洲也曾提出过多种可复用运载器方案，如欧空局 Reusable carriers are the future direction of space transportation technology, and the United States, Europe and Japan are making various technical preparations for such carriers. In Europe, due to the limited funds in Europe mostly spent on the development of the “Ariane” 5 rocket, there have been very few efforts in the development of reusable carrier technology. In fact, Europe has also proposed a variety of reusable carrier programs, such as ESA