I would like a better explanation regarding the contract prices for orbital and spacex. Cygnus is 2000/2700kg x 8=1.9B. Dragon is 6600kg(50% pressurized) x 12=1.6B. Cygnus have more interior volume, 19/27m3 vs 10m3 for dragon. So Cygnus's only advantage is more interior volume. But why is it a competition if orbital is much more expensive just for more volume but lesser capability?What are your thoughts on the prices? And why do you think spacex managed to be cheaper?
But why is it a competition ..
As for the whole by-volume comparison, that's just smoke and mirrors. Rockets lift tons, not cubic meters.
I would like a better explanation regarding the contract prices for orbital and spacex. Cygnus is 2000/2700kg x 8=1.9B. Dragon is 6600kg(50% pressurized) x 12=1.6B.
My thought is that I'm not sure I understand, or believe, the claimed 6.6 tonne cargo capacity.
Quote from: wellesly on 04/22/2013 03:43 amI would like a better explanation regarding the contract prices for orbital and spacex. Cygnus is 2000/2700kg x 8=1.9B. Dragon is 6600kg(50% pressurized) x 12=1.6B.Pointless calculations. Contracts are for 20mt upmass, not fully packed flights. CRS-1/2 flew less than half empty.
It is not pointless. You can start by the price difference, then go to the cargo return capability than Dragon has, then add the 12 flights that Dragon provides, which adds flexibility.
And in the end you might wonder where the 20mt upmass number came from...
The valid question is how OSC got $95,000/kg while SpaceX 'only' $80,000/kg. Better salesmen?
The valid question is how OSC got $95,000/kg while SpaceX 'only' $80,000/kg.
Cygnuses (sp?)
Actually, I'm far more interested in where the difference in the numbers comes from.
Difference in philosophy, too.OSC is going "yeah! we got a higher bid approved".SpaceX is going "yeah! we're proving that we're more competitive".SpaceX is in it for the long game, they realize they won't be the only provider for government contracts, and they'd rather be the cheaper one.As for the whole by-volume comparison, that's just smoke and mirrors. Rockets lift tons, not cubic meters.
Quote from: meekGee on 04/22/2013 03:53 amDifference in philosophy, too.OSC is going "yeah! we got a higher bid approved".SpaceX is going "yeah! we're proving that we're more competitive".SpaceX is in it for the long game, they realize they won't be the only provider for government contracts, and they'd rather be the cheaper one.As for the whole by-volume comparison, that's just smoke and mirrors. Rockets lift tons, not cubic meters. Actually, it was SpaceX and Kistler that won the initial round of COTS contracts. Orbital wasn't in the same RFP as SpaceX. They bid as a replacement for Kistler after they failed. If you want to see Orbital and SpaceX compete on pricing for cargo services, wait until the next round. That one should be fairly interesting, since both vendors will know their cost structures very well, and there is basically no development risk involved.