No. Dragon only carries 6MT and Cygnus 2mT.
Quote from: A_M_Swallow on 03/31/2011 09:09 pm13 mT can be lifted by an EELV. Can a Dragon or Cygnus push 13 metric tons from LEO to the ISS?No. Dragon only carries 6MT and Cygnus 2mT. However to put this in perspective Progress which has sustained the russians for decades with 3 person crews only carries 2.3MT of payload and some of that is propellant!
13 mT can be lifted by an EELV. Can a Dragon or Cygnus push 13 metric tons from LEO to the ISS?
I just can't see how STS-135 would ever be in jeopardy. It is too important for ISS, and (IIRC) the President has earlier called out that mission specifically as something he thinks is important. Administrator Bolden has also said (again, IIRC) that even with a flat budget (e.g., just a series of CRs), NASA will find a way to get it done. IMO, STS-135 is not a "nice to have" mission, it is imperative. I wouldn't trust the commercial providers to make any timeline so far put out there. Too many things to go wrong and push launches to the right again and again. I think expectations for the commercial providers need to be managed down in a big way. Senior management should not have put them on the critical path (to misuse a term) of ISS support .
Not a prediction
Quote from: Jim on 04/01/2011 12:38 amNot a predictionOk, only a possible outcome then.
Quote from: EE Scott on 03/31/2011 09:57 pmI just can't see how STS-135 would ever be in jeopardy. It is too important for ISS, and (IIRC) the President has earlier called out that mission specifically as something he thinks is important. Administrator Bolden has also said (again, IIRC) that even with a flat budget (e.g., just a series of CRs), NASA will find a way to get it done. IMO, STS-135 is not a "nice to have" mission, it is imperative. I wouldn't trust the commercial providers to make any timeline so far put out there. Too many things to go wrong and push launches to the right again and again. I think expectations for the commercial providers need to be managed down in a big way. Senior management should not have put them on the critical path (to misuse a term) of ISS support .The pending govt shutdown will kill STS-135
Ewww. Not big on politics, but a government shutdown isn't likely......is it? I mean, the US will have a lot more to worry about than STS-135 if that happens!
This congress is dysfunctional - it was even before it became a lame duck session.
Quote from: EE Scott on 04/01/2011 12:39 amQuote from: Jim on 04/01/2011 12:38 amNot a predictionOk, only a possible outcome then.It is what will happen. The money for STS-135 must be paid for by a set period, and a shutdown would move the goalposts too far down, and bye-bye STS-135.
I did not realize that a government shutdown would play such havoc with the schedule. I can assume that a short shutdown wouldn't be that big of a deal, but a prolonged one would kill it?
Depending on if one happens and how long it is, all us outsiders will be looking to see what NASA HQ decides. A shutdown not only suspends work on 135, but could impact CRS integration work. If so, that's a double whammy for ISS supply margins.
Quote from: psloss on 04/01/2011 01:25 amDepending on if one happens and how long it is, all us outsiders will be looking to see what NASA HQ decides. A shutdown not only suspends work on 135, but could impact CRS integration work. If so, that's a double whammy for ISS supply margins.But I think NASA HQ can make a solid case to support ISS with STS-135 - the need is too great.What other options are there? Anything in the way of special appropriation or Presidental order? Obviously were not at that point now, just feeling things out.
Obviously just guessing, but how long do people here figure this 'could' last?I say this because I think back to Bill Gerstenmaier's comment (a while back) to fly STS-135 as late as possible, something like August. Now of course this has been moved up, but perhaps it could slip back to an August timeframe with 'hopefully' enough time to make up for the lost time during a shutdown to get back up to speed on crew training & ops.