Quote from: RocketmanUS on 05/03/2013 06:02 pmWhat would it cost to day to develop the CXV throw 1st flight? ( not including the launch as the launch cost would be unknown till a launch vehicle was selected )Same question for the CCDEV2 concept , however assume the use of F9 v.v as the launch vehicle?I have no idea what it would cost for the original CXV air-launch concept today. In 2004, we thought the project was under $500M based on an estimate from Scaled for the a/c that was much lower than what the current a/c is rumored to cost (I know of no data on Stratolaunch a/c price but at the SL press conference Allen said that he was prepared to spend ten times what he spent on SS1, which was about $25M.).I don't recall exactly what our bid for CCDEV2 was, but w/o the LV, I think we were in the $200M range for non-recurring for the spacecraft.
What would it cost to day to develop the CXV throw 1st flight? ( not including the launch as the launch cost would be unknown till a launch vehicle was selected )Same question for the CCDEV2 concept , however assume the use of F9 v.v as the launch vehicle?
Quote from: HMXHMX on 05/03/2013 06:10 pmQuote from: RocketmanUS on 05/03/2013 06:02 pmWhat would it cost to day to develop the CXV throw 1st flight? ( not including the launch as the launch cost would be unknown till a launch vehicle was selected )Same question for the CCDEV2 concept , however assume the use of F9 v.v as the launch vehicle?I have no idea what it would cost for the original CXV air-launch concept today. In 2004, we thought the project was under $500M based on an estimate from Scaled for the a/c that was much lower than what the current a/c is rumored to cost (I know of no data on Stratolaunch a/c price but at the SL press conference Allen said that he was prepared to spend ten times what he spent on SS1, which was about $25M.).I don't recall exactly what our bid for CCDEV2 was, but w/o the LV, I think we were in the $200M range for non-recurring for the spacecraft.A/C stand for air craft?So Stratolaunch air craft is could be estimated at about $250M? ( that sound about right based on the price for a 747 )Did the CCDEV2 OV need to be launch with the OM or could it be launch without it to a space station for crew delivery?
Is there a thread for discussing the earlier proposal, mentioned herehttp://forum.nasaspaceflight.com/index.php?topic=24989.msg1050909#msg1050909which is found here:http://exploration.nasa.gov/documents/reports/cer_final/tSpace.pdfIs 15 Mt still considered reasonable for starting ISRU LOX/LH2 production?
I don't know if there is a thread for that or not; we can discuss here if you wish, I have no objection.
Quote from: HMXHMX on 05/13/2013 04:00 amI don't know if there is a thread for that or not; we can discuss here if you wish, I have no objection.I asked on the other thread, but I'll repeat here: am I missing how you're handling LH2 boiloff in this presentation? What were the assumptions for that?