Commercial Crew is paying for the man rating of the vehicles as well as development of the spacecraft. If Dream Chaser replaces the CST-100 then the cost of man rating the Atlas 5 will have to be transferred to the Dream Chaser program.
My understanding of the report is that the cost benefit analysis is for the life operations expectancy of ISS based on the study that NASA is currently doing on this (which is expected to be 2028).
Quote from: yg1968 on 01/15/2014 03:18 amMy understanding of the report is that the cost benefit analysis is for the life operations expectancy of ISS based on the study that NASA is currently doing on this (which is expected to be 2028).Do you have a reference for this date, if so, the CC program will look a lot better. A cost-benefit analysis can have many in it things as stated in this thread which will make CC a bargain but my fear is that the powers that have called for the analysis are doing so to prevent CC from going forward. Every year in the out-years that ISS is operating, the CC program looks better per cost per seat - including development. The four years from 2024 to 2028 will have Russian Soyuz seat costs projected at $85 million (according to posts in this thread) or an additional $1.36 billion over four years. So if CC starts operations in 2018 the equivalent costs sent to Russia would be about 3.5 billion dollars - I think we can do CC for 3.5 billion.
At that time, the partners added that there were “no identified technical constraints to continuing ISS operations beyond the current planning horizon of 2015 to at least 2020″ and that, moreover, “the partnership is currently working to certify on-orbit elements through 2028.” The decision to maintain a permanent U.S. presence aboard the station for at least another full decade goes a significant distance in establishing some middle ground between these two dates. Meeting that target will be challenging, though not impossible. In 2010, ISS Program Manager Michael Suffredini reported that he felt comfortable that the station was structurally capable of supporting human occupants until at least the early 2020s, whilst analysis of relevant factors—including the procurement of spare parts—are expected to be completed by all ISS partners no later than 2016.
Sure this might not be completely fair to SpaceX, but it could mean the maximum return for NASA.
Quote from: Elmar Moelzer on 01/15/2014 02:32 pmSure this might not be completely fair to SpaceX, but it could mean the maximum return for NASA.It would also be illegal. Government procurement works by setting requirements and awarding contract to the best offeror. You can't leave the best offeror out bevause he "could supply it anyways".Btw, it's not even the best way to bootstrap a commefcial LEO market. The missing supplier is space station one. If they want to really start the market, they should do something like COTS for the next National Laboratory in space for 2024-2044 and make the contract for a certain level of science utilization.
Looking at the discussions on this topic here and elsewhere, it is not quite clear who "the best offeror" really is.I am sure arguments could be made for either one of them (as has been done here countless times). Also, if SpaceX got a large resupply contract instead of the crew, they might just go along (COTS was a lot less bureaucratic anyway and that might just be what they want).I do agree that having a COTS for the next space station would be a good thing to do.
I do agree that having a COTS for the next space station would be a good thing to do.
Quote from: Elmar Moelzer on 01/15/2014 02:32 pmSure this might not be completely fair to SpaceX, but it could mean the maximum return for NASA.Why does it have to fair to Spacex, the point is maximizing return for NASA
Quote from: Elmar Moelzer on 01/15/2014 03:17 pmI do agree that having a COTS for the next space station would be a good thing to do.There is no repeating of COTS. It is done and no need for anymore. Any future contracts will be for services.
Best offeror is determined by the selection comitee based on the parameters of the tender. Anything not strictly on the tender rules is object of protest. BTW there's content on this site that stongly suggest that SpaceX is the leading offeror right now. And remember that somethin like 60% of the selection criteria is price.
I was referring to a post my Baldusi, who suggested that NASA should buy services for a new commercially operated space station by taking a similar contractual approach to COTS.
Quote from: Jim on 01/15/2014 03:43 pmQuote from: Elmar Moelzer on 01/15/2014 02:32 pmSure this might not be completely fair to SpaceX, but it could mean the maximum return for NASA.Why does it have to fair to Spacex, the point is maximizing return for NASAAre you sure this is the regulations?Or is it that the best offer should get the contract?
Quote from: A_M_Swallow on 01/15/2014 06:32 amCommercial Crew is paying for the man rating of the vehicles as well as development of the spacecraft. If Dream Chaser replaces the CST-100 then the cost of man rating the Atlas 5 will have to be transferred to the Dream Chaser program.Unless DC decides to launch on the Falcon 9.
Quote from: yg1968 on 01/15/2014 01:49 pmQuote from: A_M_Swallow on 01/15/2014 06:32 amCommercial Crew is paying for the man rating of the vehicles as well as development of the spacecraft. If Dream Chaser replaces the CST-100 then the cost of man rating the Atlas 5 will have to be transferred to the Dream Chaser program.Unless DC decides to launch on the Falcon 9. Then NASA loses the operational safety of having redundant launch vehicles. Having recently lost the ability to launch people into space I suspect NASA will not be in a hurry to repeat that embarrassment.It should be possible to design the Dream Chaser so that it can be launched on both Atlas V and Falcon 9 LV.
This brings up something I've been wondering about the F9v1.1.SpaceX has always maintained that the F9 was designed and built from the beginning to be human rated. Is it considered that now? Or are there additional avionics, monitoring sensors, redundancies, etc. that will need to be added or updated for the inclusion of the LAS?
Quote from: rcoppola on 01/15/2014 04:12 pmThis brings up something I've been wondering about the F9v1.1.SpaceX has always maintained that the F9 was designed and built from the beginning to be human rated. Is it considered that now? Or are there additional avionics, monitoring sensors, redundancies, etc. that will need to be added or updated for the inclusion of the LAS?I hate the term "man-rated". It is outdated and never really used correctly. The requirements for "man-rating" are vague and nebulous. Man-rated should be based on applicable reliability and accepted risk via some level of redundancy in critical systems. Any launch vehicle with a crew vehicle on it will need some sort of avionics package that allows the booster to "talk" to the vehicle. This is in the event emergency separation is required and triggered by the av package if monitored parameters are at the redline or trending that way quickly.