DARPA XS 1 Concept

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DARPA created its Experimental Spaceplane (XS-1) program to help create a new paradigm for more routine, responsive and affordable space operations.
DARPA创立了实验航天飞机（XS-1）计划，以帮助创造更多的常规，及时性和实惠的太空作战的新典范。该项目旨在开发一个完全可重复使用的无人驾驶.
The XS-1 space drone spy ship has been commissioned for production by DARPA for cheaper launch of satellites into orbit by 2019. With Boeing already .