Centaur G and G' were redesigned Centaurs for Shuttle launch, with larger diameter tanks. The 4.3m diameter, 6m long G and 4.3m dia, 9.0m long G-prime were sized for the payload bay. The Shuttle-Centaur program was cancelled shortly before first launch. Two G' stages had been built, and one G was under construction. A third G' was planned for Magellan.
The CISS (Centaur Integrated Support System) was a cradle provided in the STS payload bay to support the stage.
|SC-1 (G')||Galileo||VPF testing at KSC|
|SC-2 (G')||Ulysses||Fuelling tests at CC LC36A|
|SC-3 (G)||DoD||Early fabrication|