http://www.spaceref.com/news/viewsr.html?pid=40747NASA Solicitation: Interim Cryogenic Propulsion Stage for the Space Launch SystemSource: Marshall Space Flight CenterPosted Thursday, May 3, 2012<snip>Design parameters/ performance characteristics for the ICPS are as follows:<snip>2. Burns (accelerating MPCV) following placement of ICPS and MPCV at 975 x -50 nmi insertion point by the SLS Launch Vehicle -- three engine ignitions to achieve greater than 3050 m/s delta-V;3. Lift Capability -- total weight of 53404 lbs which includes crew module, service module, and crew;4. Mass -- less than 71400 lbs.; <snip>7. Constraints -- axial acceleration, during stage burns, not to exceed 2g; and8. Reference Missions -- support MPCV free lunar return without crew and MPCV High Lunar Orbit (HLO) with crew.<snip>