Shuttle-C heavy-lift vehicle of the 90's

An unmanned cargo version of the Shuttle is being defined with the objective of achieving early high-lift capability. This vehicle, Shuttle-C, is a low-cost evolution of the current Space shuttle that may be flying 100,000-170,000-pound payloads by late 1994. The only new element of the Shuttle-C will be a cylindrical payload carrier with a 15-foot diameter, 82-foot long payload bay. The discussion covers the advantages of Shuttle-C, Shuttle-C design, the main propulsion system, the power system and auxiliary power units, a typical mission, and candidate payloads.