This British Aircraft Corporation concept for a fully reusable space transportation system was studied long before the Shuttle research effort in 1969-1972. First presented in 1962, the design was called MUSTARD (Multi-Unit Space Transport and Recovery Device). It featured three piloted lifting-body vehicles - two boosters and an orbiter - that would be launched either stacked or clustered. During ascent the spent boosters would separate and be flown like a glider back to land, and the orbiter would continue into space and later make a gliding return. All propellants were carried inside each vehicle. The origin of this model is unknown; it may have come to the Museum from its designer, British Aircraft Corporation.