Quote from: Blackstar on 11/07/2014 04:27 pmOver a year ago I saw a booth set up by a Japanese rocket engine company and they were discussing the possible use of their engine as an upper stage for SLS.More recently I was talking to a ULA person who indicated that they were currently evaluating a Japanese rocket engine for an SLS upper stage. And I've heard other inklings of this from another non-ULA/non-Japanese source as well.Does anybody have more info? Can you point me to something with more details?Perhaps the MB-60?http://forum.nasaspaceflight.com/index.php?topic=32437.0
Over a year ago I saw a booth set up by a Japanese rocket engine company and they were discussing the possible use of their engine as an upper stage for SLS.More recently I was talking to a ULA person who indicated that they were currently evaluating a Japanese rocket engine for an SLS upper stage. And I've heard other inklings of this from another non-ULA/non-Japanese source as well.Does anybody have more info? Can you point me to something with more details?
Boeing produced video on SLS:38 Stories of Powerhttp://www.buildsomethingbetter.com/#!/video/space/38-stories-of-power
Quote from: isogrid on 11/17/2014 05:46 pmBoeing produced video on SLS:38 Stories of Powerhttp://www.buildsomethingbetter.com/#!/video/space/38-stories-of-powerWhy transposition and docking before EUS fires? .... What was Orion docking with at the top of EUS anyway?
I still wonder about the insistence on painting the tank white in the artists concepts. When is somebody going to admit that the orange tank insulation will be left as is?
Artists concept used in a NASA presentation in July 2014.
Quote from: llanitedave on 11/19/2014 07:00 pmI still wonder about the insistence on painting the tank white in the artists concepts. When is somebody going to admit that the orange tank insulation will be left as is?As with STS external tank the SLS core stage is only planned first couple of flights in Saturn white and black or until test regimen is concluded completely. although keeping it white would reduce cryo boil off a bit. This is why Centaur went back to white. I could only really see keeping the EPS white.
Quote from: russianhalo117 on 11/19/2014 10:51 pmQuote from: llanitedave on 11/19/2014 07:00 pmI still wonder about the insistence on painting the tank white in the artists concepts. When is somebody going to admit that the orange tank insulation will be left as is?As with STS external tank the SLS core stage is only planned first couple of flights in Saturn white and black or until test regimen is concluded completely. although keeping it white would reduce cryo boil off a bit. This is why Centaur went back to white. I could only really see keeping the EPS white.STS-1 and 2 were white. It gives photo ops for a prettier bird, then many of those photos get used forever. Even in the 80s, eliminating the paint saved $2m/flight.
Courtesy of Boeing and the Planetary Society's site, here is SLS with a trio of concept spacecraft within its fairing. From left to right they are Uranus Orbiter-Probe, ATLAST, and an Interstellar Mission (that resembles Europa Clipper a lot).http://planetary.s3.amazonaws.com/assets/images/spacecraft/2014/20141119_planetary-concepts.png