Quote from: Space Pete on 04/18/2011 03:15 pmB) A lot less work is required to man-rate Liberty than to man-rate Atlas V, since both Liberty's SRB and 2nd stage were designed with crew in mind.Hmm. And what is going to be different with this SRB than the Ares-I wrt the thrust oscillation issue? All that TO was shown to be pretty much a crew-killer. I have no difficulty using it for cargo only, but not for crew. It would be dead-man-walking according to all the analysis documentation that has been collected.
B) A lot less work is required to man-rate Liberty than to man-rate Atlas V, since both Liberty's SRB and 2nd stage were designed with crew in mind.
I sincerely hope they select at most 3 so as to actually offer enough money to the winners to accomplish substantial development goals. We need to move on this.Are we not far enough along in the development cycles of the competing systems for NASA to make an educated decision as to which of the executions is most likely to succeed, with the greatest speed to market, most economical to develop and maintain, factoring in capabilities?I'd be interested in a non-partisan opinion / fact based analysis as to which of the systems truly qualifies to get funded at levels commiserate with their current development accomplishments and future lifecycle costs..
Are we not far enough along in the development cycles of the competing systems for NASA to make an educated decision as to which of the executions is most likely to succeed, with the greatest speed to market, most economical to develop and maintain, factoring in capabilities?
The only prediction I'll make is this:People will find a way to complain and gripe no matter what companies get funded instead of being happy that funding was actually provided for Commercial Crew contract proposals.
Quote from: ChrisGebhardt on 04/18/2011 03:28 pmThe only prediction I'll make is this:People will find a way to complain and gripe no matter what companies get funded instead of being happy that funding was actually provided for Commercial Crew contract proposals. I think you just hit the nail on the head with that one.
Quote from: rcoppola on 04/18/2011 03:21 pmI sincerely hope they select at most 3 so as to actually offer enough money to the winners to accomplish substantial development goals. We need to move on this.Are we not far enough along in the development cycles of the competing systems for NASA to make an educated decision as to which of the executions is most likely to succeed, with the greatest speed to market, most economical to develop and maintain, factoring in capabilities?I'd be interested in a non-partisan opinion / fact based analysis as to which of the systems truly qualifies to get funded at levels commiserate with their current development accomplishments and future lifecycle costs..CCDev is more than, or at least it should be, technical analysis. It's business. For example, the ability to provide capital investment and the very important, but often overlooked, business case.
Quote from: rcoppola on 04/18/2011 03:21 pmAre we not far enough along in the development cycles of the competing systems for NASA to make an educated decision as to which of the executions is most likely to succeed, with the greatest speed to market, most economical to develop and maintain, factoring in capabilities?I'd actually like to see SpaceX get enough to guarantee that they can finish up on their own after this so that in any future awards they can be cut out, keeping other less well funded but excellent companies alive.Remember, these are commercial companies and at some point they need to be weaned if they are going to retain the title "commercial". Sure the USGov can purchase their product or service, but at some point they need to stand on their own 2 feet and fund their day to day operations out of their profit margin, not from the US Treasury. I hope to see that happen to *all* the winners.
… and it's pretty much been proven on the 5-seg static fires that it's even less than what was recalculated to be small vibrations for a few seconds late in first stage.Add in the mitigation and TO is not even an issue at all.
Quote from: clongton on 04/18/2011 03:03 pmBut I don't think you are alone in having a favorable opinion of Liberty. I would be interested in your reasoning.In a nutshell, the reason that I prefer Liberty over Atlas V is because:A) Liberty is a "simple" rocket, which does exactly what it says on the tin (launch to LEO, nothing else). One of my favourite sayings: "The simpler a plan is, the less things can go wrong". B) A lot less work is required to man-rate Liberty than to man-rate Atlas V, since both Liberty's SRB and 2nd stage were designed with crew in mind.C) The support for Liberty is mostly already in place. For example, a new gantry would need to be constructed for Atlas V in order to allow for crew access, whereas Liberty would use the Ares I ML.All of the above would likely make Liberty ready to fly crew before Atlas V.However, having said all that, by my own admittance I'm not a religious follower of new/commercial space, so I'm sure there are some things that I have overlooked.
But I don't think you are alone in having a favorable opinion of Liberty. I would be interested in your reasoning.
But, here's what we don't want to happen: The losers to get all upset and go call their congressman/congresswoman, who introduces new legislation to ensure that they win (like what's happening with the Shuttle retirement homes). Whoever NASA announces, we just need to get behind them and get on with it.
The more we dilute what little funds we have, to companies so far from achieving an operational system, the longer we will have no domestic HSF, LEO capability.
Quote from: rcoppola on 04/18/2011 03:39 pmThe more we dilute what little funds we have, to companies so far from achieving an operational system, the longer we will have no domestic HSF, LEO capability.Which is exactly the point I was making wrt SpaceX. I really like that company and all they have so far accomplished. But it is reasonably well funded and as long as we don't wean them too soon, they will make it on their own, freeing up that funding to go to other promising companies who would otherwise fall just over the cutoff line.
Quote from: clongton on 04/18/2011 03:28 pmQuote from: rcoppola on 04/18/2011 03:21 pmAre we not far enough along in the development cycles of the competing systems for NASA to make an educated decision as to which of the executions is most likely to succeed, with the greatest speed to market, most economical to develop and maintain, factoring in capabilities?I'd actually like to see SpaceX get enough to guarantee that they can finish up on their own after this so that in any future awards they can be cut out, keeping other less well funded but excellent companies alive.Remember, these are commercial companies and at some point they need to be weaned if they are going to retain the title "commercial". Sure the USGov can purchase their product or service, but at some point they need to stand on their own 2 feet and fund their day to day operations out of their profit margin, not from the US Treasury. I hope to see that happen to *all* the winners. I understand and agree to a point. And yes there are some exciting possibilities with less funded entities, however, I'm just not of the mind that we should belabor this point. The ultimate goal is to get a working commercial space man-rated transportation system in place as quickly and as economically as possible. The more we dilute what little funds we have, to companies so far from achieving an operational system, the longer we will have no domestic HSF, LEO capability.
Isn't that the main thrust of pro-commercial space extremists? Or is that just talk to get as much money from the government as possible?
Pro-commercial space extremists? Who are they? Do they hide in caves?