"NASA is stopping work, at the request of Congress, on human-rating the initial upper stage for the Space Launch System, even as the agency argues that its funding projections require it to use that upper stage on crewed missions. At issue is the future use of the Interim Cryogenic Propulsion Stage (ICPS), an upper stage derived from the Delta 4's upper stage. The ICPS is intended for use on at least the first SLS launch, which will not carry a crew. NASA confirmed Feb. 18 that it has instructed teams to stop work on efforts to human-rate the ICPS for later, crewed SLS missions, following instructions from Congress in the report accompanying the 2016 omnibus spending bill."
NASA moves to enforce early switch to EUS for SLS, NASASpaceflight.com
"The EUS recieved a specific reference from NASA Chief Financial Officer David Radzanowski in comments made to the media after the announcement, citing that the reduced funding could impact on implementing the EUS on the second flight of SLS."
Keith's note: On one hand NASA stops work on anything that would involve use of the Interim Cryogenic Propulsion Stage (ICPS) for a crewed EM-2 mission but on the other hand its FY 2017 budget request is nowhere near enough to develop the Exploration Upper Stage (EUS) such that crewed EM-2 can stay on its current schedule. In other words the White House, NASA, and Congress are all but ensuring that the first flight of SLS with humans will most certainly slip - possibly after the second term of the next person to be elected president. NASA started this big Ares-V/SLS effort back in the middle of the Bush presidency. This latest threat to SLS could mean that more than two, double-term presidencies will have passed before NASA can send its new big rocket with anyone on board.
I wonder how many Atlas, Delta, and Falcon rockets you could have bought with the money NASA has spent on Ares-V/SLS? How much sooner could we have begun to build and operate a real cis-lunar infrastructure had we gone with private sector rockets? Yes, it would take more launches, but given the chronic inability for NASA to field its new big rocket, we'd have been further along - for less money - if we'd taken the commercial approaches first envisioned when the Vision for Space Exploration was announced in January 2004. But no, NASA is on a #JourneyToNowhere instead.
- NASA Is Building A Rocket That It Can't Afford To Use, earlier post
- NASA Begins Its Journey To Nowhere, earlier post