The Martin Marietta Spacemaster was a proposed configuration for what became the Space Shuttle which featured an X-24-derived orbiter and an unusual “catamaran style” booster stage. During launch and ascent the orbiter would be located in a recess in the booster. The booster’s 14 engines would be located in clusters of seven at the bottom of both halves of the booster.
This page contains content from the copyrighted Wikipedia article "Martin Marietta Spacemaster"; that content is used under the GNU Free Documentation License (GFDL). You may redistribute it, verbatim or modified, providing that you comply with the terms of the GFDL.