ESAS Final Report: Chapter 6, Pg 25:In addition, there would be a large impact to the launch infrastructuredue to the configuration of the four strap-on boosters (i.e., added accommodationsfor the two additional boosters in the flame trench and launch pad).
JonClarke - 2/1/2006 10:57 PMTo what extent can the performance of the SDLV be upgraded without an extensive redesign? is it 2%, 5%, 10%Jon
http://www.universetoday.com/am/publish/new_advances_liquid_rockets.html?14102005
Perhaps something like the above to the SSME and/or the J-2S+. What would they call the J-2S+ then, the J-2S++? I think it would be time for a new designation.
MATTBLAK - 6/1/2006 10:26 PMI would think that uprating the RS-25s (SSME) to 114% percent thrust and adding a third J2S to the EDS would, by my rough calculation, get 139-140 tons to LEO, up from 125.
.... 139 tons would equal the Saturn V to LEO....
ADC9 - 9/1/2006 1:06 AMHow can SSMEs go over 100 percent in the first place? I don't understand what the 100 percent benchmark represents because of this.
ADC9 - 9/1/2006 7:06 AMHow can SSMEs go over 100 percent in the first place? I don't understand what the 100 percent benchmark represents because of this.
Daniel Handlin - 3/2/2006 9:42 PMI'm constantly annoyed by the varying sources for Saturn V lift; am I correct in stating that if we don't count the upper stage, Saturn V can lift 118 tonnes to LEO and the CaLV can launch 125 tonnes, and the corresponding masses would be 140 and 148.6 for including the upper stages?
MATTBLAK - 5/2/2006 3:34 PM148.6 - 22.1 tons (EDS) = 126.5 tons, which is often the quoted payload figure (or 125 tons). In Saturn V payload figures, the S-IVB (15 tons, including Instrument Unit) was left off of some literature, which explains the disparate payload figures, eg; the Saturn V payload is said to be 118 tons, not the 130+plus tons which might be more proper, including the stage that sent that payload there.
MATTBLAK - 5/2/2006 4:34 PM148.6 - 22.1 tons (EDS) = 126.5 tons, which is often the quoted payload figure (or 125 tons). In Saturn V payload figures, the S-IVB (15 tons, including Instrument Unit) was left off of some literature, which explains the disparate payload figures, eg; the Saturn V payload is said to be 118 tons, not the 130+plus tons which might be more proper, including the stage that sent that payload there.
publiusr - 24/2/2006 4:20 PMI just hope CaLV gets built. Mod it later. If we can get the same institutional inertia behind CaLV that gave us 100 shuttle flights--we will have a REAL space program. We just need to support Griffin--and not the EELV "used-Delta" hucksters.
rmathews3 - 24/2/2006 6:49 PMQuotepubliusr - 24/2/2006 4:20 PMI just hope CaLV gets built. Mod it later. If we can get the same institutional inertia behind CaLV that gave us 100 shuttle flights--we will have a REAL space program. We just need to support Griffin--and not the EELV "used-Delta" hucksters.My only fear is that Exploration is going to be funded in the future based on a "performance as-you-go". If NASA is years behind schedule and billions over-budget on CEV after the Shuttle is retired, it is conceivable we would be stuck with a CEV to ISS as our future space program. Congress may not be willing to throw good money after bad. Going to the moon is not a guarantee. The people that had the program management experience to do Apollo, and later Shuttle, are not longer around. I have serious doubts about the talent of the people that are doing some of the Exploration work. Some of the people that I know are being put in positions like that are idiots without the real experience to pull off such a program who mainly got where they are through local politics and butt-kissing. In my position, I am going to try to do everything I can to make sure they don't screw it up. But I have my doubts.
Avron - 25/2/2006 8:51 AMI think that maybe the focus is not on spaceflight but elsewhere, ... Does NASA in general, at upper management level, still have the right stuff?