• Boeing XS-1 Experimental Spaceplane artist concept
    From the Magazine

    XS-1: The government’s last shot at reusable launch vehicles

    For decades, U.S. government agencies, both civil and military, have sought to develop a reusable launch vehicle (RLV), seeing it as a critical tool for lowering the cost of space access. The space shuttle is the best known such effort, but it’s hardly the only one: the National Aerospace Plane, Delta Clipper, X-33, X-34 and Space Launch Initiative all tried to develop reusable launchers — and all failed.