Quote from: woods170 on 12/21/2014 10:54 pmQuote from: Hog on 12/21/2014 04:23 pmIIRC the new RS-25 controller and the new J2X controller are one in the same. So Block II SLS will use a common controller on bothe the core and the upper stage.Unlikely. SLS, as currently envisioned up to the 130 mT version, will never fly J-2X on any upper stage.My simulations show you need a J-2X or four MB-60 second stage engines to get to 130 t, regardless of the boosters used.
Quote from: Hog on 12/21/2014 04:23 pmIIRC the new RS-25 controller and the new J2X controller are one in the same. So Block II SLS will use a common controller on bothe the core and the upper stage.Unlikely. SLS, as currently envisioned up to the 130 mT version, will never fly J-2X on any upper stage.
IIRC the new RS-25 controller and the new J2X controller are one in the same. So Block II SLS will use a common controller on bothe the core and the upper stage.
Here's a copy of the Block III SSME Upgrade Project Overview presentation with the pages rotated to the correct orientation.
Test Videohttp://forum.nasaspaceflight.com/index.php?topic=36465.msg1312812#msg1312812
In the article posted on Jan 2 it is mentioned that the head pressures for the fuel and oxidisers will be greater for SLS as opposed to the shuttle. I am just wondering how that would affect the performance of the engines? Increase/decrease thrust or ISP? And will it be a greater or less stress on the turbine pumps?I guess the reason for the tests are two determine the outcomes but if anyone wanted to make an informed guess I would very much appreciate it!ThanksMark
http://www.nasa.gov/exploration/systems/sls/some-assembly-required-the-newest-rs-25-joins-the-space-launch-system-family.html16th RS-25 completed.I believe there also was an engine test today.
The RS-25 is unique among many engines in that it automatically runs through its cycles and programs.