Venturestar

VentureStar

VentureStar was a proposed single-stage-to-orbit reusable launch system by Lockheed Martin. As a United States federally funded program, the primary goal was to develop a reusable spaceplane to launch satellites into orbit at a fraction of the cost of other systems intended to replace the Space Shuttle. While the requirement was for an unmanned launcher, it was expected to optionally carry passengers as cargo.