OK, several people have asked, in off-topic comments and email, about this announcement by SpaceX from last week, and wondering why I haven’t noted it.
Two reasons: first, a lot of it is in a piece I wrote for Popular Mechanics last week, and expected to run last week, and I didn’t want to step on the story here. Second, I didn’t think it was that big a piece of news. There’s little here that hasn’t been known for years to people who have been following the company and Elon’s plans. All it does is flesh out numbers on the thrust of the Merlin 2 and payload for the BFR.
As for whether I think that it is a challenge to my ongoing jihad against heavy lift, well, maybe. As I told Max Vozoff at lunch the other week, I’m not opposed to heavy lift in principle — I just think that it is unnecessary at the present time, and that it will be ghastly expensive if done using NASA legacy hardware and work force (and perhaps even ULA-legacy hardware, too, though that will be somewhat more affordable). If Elon can make it work economically, then more power to him, but I expect him to do it on a fixed-price contract that has to fairly compete with solutions not requiring it. For instance, if he wants to bid for propellant delivery, and thinks that he can beat the price at the depot of other bidders, go for it. I just don’t want the taxpayer to subsidize the development of what I consider an unneeded vehicle.