The four RS-25 engines from Aerojet Rocketdyne successfully propelled the Core Stage, Interim Cryogenic Propulsion System, and Orion/Service Module stack into its initial Earth orbit during the ...

Several access doors are built into the LVSA to allow pre-launch work inside the adaptor, which will become more cramped once the Interim Cryogenic Propulsion Stage (ICPS) is lowered inside.

These first three lunar missions use an the interim cryogenic propulsion stage to boost the Orion spacecraft, which is a single-engine stage, NASA officials explained. The missions starting with ...