Quote from: OV-106 on 09/26/2011 08:28 pmQuote from: sdsds on 09/26/2011 08:20 pmJust for clarity -- the NASA/ISS plan is for USOS occupied by 4 crew members, and ROS occupied by 3? This would be a crew of 7, with "surge" to 10 when two Soyuz are docked and surge to 9 (or more) when a CCP vehicle is docked?That was always the plan. The limiter has always been Soyuz can only hold three. Now if there is always a "surge" or one crew comes home first and the next launches is just dependent on the final concept of operations decided.Correct - direct versus indirect is still being worked.
Quote from: sdsds on 09/26/2011 08:20 pmJust for clarity -- the NASA/ISS plan is for USOS occupied by 4 crew members, and ROS occupied by 3? This would be a crew of 7, with "surge" to 10 when two Soyuz are docked and surge to 9 (or more) when a CCP vehicle is docked?That was always the plan. The limiter has always been Soyuz can only hold three. Now if there is always a "surge" or one crew comes home first and the next launches is just dependent on the final concept of operations decided.
Just for clarity -- the NASA/ISS plan is for USOS occupied by 4 crew members, and ROS occupied by 3? This would be a crew of 7, with "surge" to 10 when two Soyuz are docked and surge to 9 (or more) when a CCP vehicle is docked?
It might be worth adding that in the beginning (pre-STS-107) crew rotations was done entirely with Shuttle with Soyuz as an emergency return vehicle.
Quote from: arkaska on 09/30/2011 11:37 amIt might be worth adding that in the beginning (pre-STS-107) crew rotations was done entirely with Shuttle with Soyuz as an emergency return vehicle. Except Expedition 1 (went up on Soyuz )However there were Soyuz taxi flights, which was the beginning of space tourism. Basically a crew would fly up with a new soyuz, and after a short stay would return with the old one. Soyuz was still required for crew stays, not really sure why expedition crews had to go up on shuttle besides good old nationalism.
The life support can not handle more then 7 people so the Russians will stick to 3 crew-members.
Quote from: arkaska on 10/04/2011 07:44 pmThe life support can not handle more then 7 people so the Russians will stick to 3 crew-members. ISS has handled up to 13 people at a time for short duration, a week handover should not be that big of a deal:However, would not expect this to occur during a USOS crew handover, however doubtful that would happen with issues of crew support for docking operations.
Will two Soyuz, when the time comes, bring up three cosmonauts each for six month stays, for about four flights a year?
Third CCDev update from NASA:http://www.nasa.gov/pdf/598229main_CCPCCDev2_Public_20111017_508.pdf
Quote from: BrightLight on 10/23/2011 09:02 pmThird CCDev update from NASA:http://www.nasa.gov/pdf/598229main_CCPCCDev2_Public_20111017_508.pdfSo, SpaceX are expected to have LAS hardware by start of Q2-2012, just 6 months after LAS preliminary design review? Am I reading this right?
Quote from: BrightLight on 10/23/2011 09:02 pmThird CCDev update from NASA:http://www.nasa.gov/pdf/598229main_CCPCCDev2_Public_20111017_508.pdfThanks for the update! Looks like everyone has tracked well to original milestone dates so far. Altho Boeing's are redacted in the original SAA, based on the amendment appear to be projected to still be on track.
Quote from: Ronsmytheiii on 10/04/2011 08:06 pmQuote from: arkaska on 10/04/2011 07:44 pmThe life support can not handle more then 7 people so the Russians will stick to 3 crew-members. ISS has handled up to 13 people at a time for short duration, a week handover should not be that big of a deal:However, would not expect this to occur during a USOS crew handover, however doubtful that would happen with issues of crew support for docking operations.But since there's intended to be two docking ports for Commercial Crew than why would this problem exist?