Two production lines exist - RS-68 (Delta-IV) and RS-25 (STS & SLS). 1 is actively building (RS-68) and 1 is primed for production (RS-25).
Quote from: clongton on 02/25/2012 12:47 pmTwo production lines exist - RS-68 (Delta-IV) and RS-25 (STS & SLS). 1 is actively building (RS-68) and 1 is primed for production (RS-25).I do not believe Rocketdyne is anything like "primed" for RS-25E.
Quote from: Jason1701 on 02/25/2012 06:13 pmQuote from: clongton on 02/25/2012 12:47 pmTwo production lines exist - RS-68 (Delta-IV) and RS-25 (STS & SLS). 1 is actively building (RS-68) and 1 is primed for production (RS-25).I do not believe Rocketdyne is anything like "primed" for RS-25E.As I understand it, the future SLS core stage engine will be competed, in a "full and open" contract competition. As you suggest, there is no guarantee that PWR will win that competition.
Quote from: edkyle99 on 02/25/2012 08:19 pmQuote from: Jason1701 on 02/25/2012 06:13 pmQuote from: clongton on 02/25/2012 12:47 pmTwo production lines exist - RS-68 (Delta-IV) and RS-25 (STS & SLS). 1 is actively building (RS-68) and 1 is primed for production (RS-25).I do not believe Rocketdyne is anything like "primed" for RS-25E.As I understand it, the future SLS core stage engine will be competed, in a "full and open" contract competition. As you suggest, there is no guarantee that PWR will win that competition. I thought that the competition was for the second-generation booster, not the core engine.
Quote from: Ben the Space Brit on 02/25/2012 08:37 pmQuote from: edkyle99 on 02/25/2012 08:19 pmQuote from: Jason1701 on 02/25/2012 06:13 pmQuote from: clongton on 02/25/2012 12:47 pmTwo production lines exist - RS-68 (Delta-IV) and RS-25 (STS & SLS). 1 is actively building (RS-68) and 1 is primed for production (RS-25).I do not believe Rocketdyne is anything like "primed" for RS-25E.As I understand it, the future SLS core stage engine will be competed, in a "full and open" contract competition. As you suggest, there is no guarantee that PWR will win that competition. I thought that the competition was for the second-generation booster, not the core engine.That is correct. The competition is for the boosters, not the core engine, which will be a non-compete RS-25.
Quote from: clongton on 02/25/2012 09:07 pmQuote from: Ben the Space Brit on 02/25/2012 08:37 pmQuote from: edkyle99 on 02/25/2012 08:19 pmQuote from: Jason1701 on 02/25/2012 06:13 pmQuote from: clongton on 02/25/2012 12:47 pmTwo production lines exist - RS-68 (Delta-IV) and RS-25 (STS & SLS). 1 is actively building (RS-68) and 1 is primed for production (RS-25).I do not believe Rocketdyne is anything like "primed" for RS-25E.As I understand it, the future SLS core stage engine will be competed, in a "full and open" contract competition. As you suggest, there is no guarantee that PWR will win that competition. I thought that the competition was for the second-generation booster, not the core engine.That is correct. The competition is for the boosters, not the core engine, which will be a non-compete RS-25.Thought I read compete for core, alas. Since it is more than a decade away, I think RS-25E should be competed-Ed Kyle
Where are you guys getting your information from?
Quote from: Robotbeat on 02/26/2012 05:03 amWhere are you guys getting your information from?I'm reading the SLS Industry Day presentation, linked in the following message. This document is essential reading for SLS followers.http://forum.nasaspaceflight.com/index.php?topic=26853.msg864885#msg864885On the bottom of Page 23, the following text is presented."Advanced DevelopmentBroad Agency Announcement (BAA)/NASA Research Announcement (NRA):Full and Open CompetitionFuture Core Stage Engine: Separate contract activity to be held in the future."It was the bold text (my bold highlighting) that made me expect a competed RS-25 future core engine. - Ed Kyle
Quote from: edkyle99 on 02/26/2012 03:52 pmQuote from: Robotbeat on 02/26/2012 05:03 amWhere are you guys getting your information from?I'm reading the SLS Industry Day presentation, linked in the following message. This document is essential reading for SLS followers.http://forum.nasaspaceflight.com/index.php?topic=26853.msg864885#msg864885On the bottom of Page 23, the following text is presented."Advanced DevelopmentBroad Agency Announcement (BAA)/NASA Research Announcement (NRA):Full and Open CompetitionFuture Core Stage Engine: Separate contract activity to be held in the future."It was the bold text (my bold highlighting) that made me expect a competed RS-25 future core engine. - Ed KyleOkay, now where is Chuck getting his information?
The down select is complete and NASA has made the final choice. SLS will be powered by the RS-25.
I just hope there's enough funding for a lunar lander.
Quote from: manboy on 02/27/2012 07:34 pmI just hope there's enough funding for a lunar lander.Highly unlikely.
Then why waste all this time and money going no where?
Quote from: manboy on 02/27/2012 07:42 pmThen why waste all this time and money going no where?EML-2 and (eventually) a NEA are not "nowhere". Also, the current administration has decided that the Moon is "been there, done that". And the potential GOP candidates have all shown their hostility to a lunar return, thanks to Newt actually proposing it. Unless Gingrich is elected, I see no chance of a lunar return anytime soon.
Quote from: aquanaut99 on 02/27/2012 07:47 pmQuote from: manboy on 02/27/2012 07:42 pmThen why waste all this time and money going no where?EML-2 and (eventually) a NEA are not "nowhere". Also, the current administration has decided that the Moon is "been there, done that". And the potential GOP candidates have all shown their hostility to a lunar return, thanks to Newt actually proposing it. Unless Gingrich is elected, I see no chance of a lunar return anytime soon.Lagrange points are "somewhere" for unmanned science missions, but they are definitely "nowhere" for crewed missions. There is literally nothing there to see or visit!Asteroid is a one-time mission, and opportunities for such missions come along infrequently. It will be interesting to the public for about an hour.Those responsible for SLS should stop trying to obfuscate its real purpose. There is only one reason to create such a powerful machine. There is only one place in space for which it is needed to visit - a place with red rocks, sand, and sky. - Ed Kyle
DIV-H Orion MPCV can't go beyond LEO without a prop depot....