D
danwoodard
Guest
Using the same contractors mean sticking with 30-year-old SRBs. Huge facilities needed to stack and launch, billions in mods to LC-39, the MLPs, and the VAB. The largest available ELV, Delta IV, is already flying and has the RS-68, which has twice the thrust of the SSME wih only 10% of the parts. Channel-wall cooling! The only new engine made in the US in the last 20 years. Efficient integration with just a couple of hundred people! No hoisting of the booster at all! The fixed umbilical tower even has an elevator. Really all it would need for manned launch is a third swingarm for crew access. Regretably, it appears there has been no formal tradeoff study to objectively consider the alternative launch vehicles.