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Archive for the ‘Spacecraft’ Category

I always had a different idea compared to the one Jon and Kirk posted, (Kirk Sorensen is now a contributor at Jon Goff’s place, I’m afraid having such top men in the same place might cause a awesomity criticality event). I assume this idea is probably found in some old NASA report from the sixties [...]

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Someone was asking on ARocket about where to start with building a differentially throttled hovering vehicle. Lots of advice were given by various people. I’ll show some stuff I quickly sketched back in 2007 with Simulink. It’s such an easy to use and awesome software (especially compared to a recent short battling with LabView), that [...]

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Or what you are going to call it, an unrealized proposal from Aerojet around 1984. PDF Found on NTRS.
The idea was to have two turbopumps (like on SSME), but instead operate on the expander cycle. Two heat exchangers, two turbines, two pumps. One for each propellant.
 
 
This is a LOX-hydrogen engine. Also this means that since [...]

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The Man. On Space Review. [EDIT: About a month ago, but I only just read it.] This is just excellent. So many things I agree with, that go against the stupid myths of spaceflight and space policy. If you read one space policy interview this year, this should be it!
“NASA is an organization that is [...]

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JAXA’s HTV

It’s in orbit currently. Status updates on spaceflight now and an NSF forum thread. There’s some technical material on NSF L2 about the HTV, for anyone there.
Hope all goes well. This is also exciting, if everything works, there are soon four space agencies that have docked to a space station – a few years ago [...]

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Skimming the document (thanks NSF, Florida Today). Cute how a launch without an upper stage at all in the heavy configuration works out for ISS (burn SM fuel for orbit):

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Jeff Greason is a rational person who simply gets it. It is mind boggling how completely opposite from someone like Mike Griffin he is.
See Jeff’s presentation with the Augustine Panel.
Paraphrasing, “we could go to Mars with Ares V but we shouldn’t – cause we couldn’t stay anyway”. Exactly. That’s the problem with NASA. (or the [...]

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Haven’t read it yet, but I wrote about something similar (and not in name only) a few years back.

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Experts on the Internet
A lot of internet discussion is ignorant speculation, rumor spreading, ranting and flaming. But that’s not all. The freedom and self-organizing nature of enables massive diversity. Newsgroups, mailing lists, IRC, forums, Twitter – and sometimes there’s something there.
Michael Tobis comments on his experience of reading about the Iranian riots on Twitter – [...]

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It seems ULA finally got out in the public with their opinion on how long and what it would take to launch manned stuff or Orion with their rockets.
It only took four years, laboring under threatening and suppression.  What a refreshing happening!
Great work, whoever decided the panel would work openly! Was it Holdren, Augustine, Obama, [...]

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