DARPA's Hypersonic Spacecraft Concept

DARPA created its Experimental Spaceplane (XS-1) program to help create a new paradigm for more routine, responsive and affordable space operations. The program aims to develop a fully-reusable unmanned vehicle that would provide aircraft-like access to space and deploy small satellites to orbit using expendable upper stages. XS-1 seeks to deploy small satellites faster and more affordably, and develop technology for next-generation hypersonic vehicles.

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