I managed to get my laptop to connect, so now I can keep a close eye on zapkitty. That bleedin' cat is gonna enjoy a visit to the vet if he keeps on making a mess all over the place LOLAnd Yegor, yeah, I know what you mean. We're not going to have much internet access for a few days, and very little time too, so we (Chuck and I) are going "quiet", but I hear ya -- I've had that "waiting for a bus" feeling all week, we've been waiting for ages and suddenly a whole line of things are all happening at the same time -- all the buses came at once!I've had about 6 hours sleep in the last three day and I'm pretty sure I've got a full couple of days ahead of me. I can't talk about any of the details yet, but now is the time to wish us luck!Ross.
I've had about 6 hours sleep in the last three day and I'm pretty sure I've got a full couple of days ahead of me. I can't talk about any of the details yet, but now is the time to wish us luck!Ross.
The Direct EDS is not a typical stage. It has a better mass fraction than any hydrogen stage that has ever flown, by a considerable margin. Look here:http://forum.nasaspaceflight.com/index.php?topic=15377.msg347878#msg347878
Quote from: Will on 01/08/2009 02:43 pmThe Direct EDS is not a typical stage. It has a better mass fraction than any hydrogen stage that has ever flown, by a considerable margin. Look here:http://forum.nasaspaceflight.com/index.php?topic=15377.msg347878#msg347878Conveniently not counting the Space Shuttle External Tank of course...The SWLT ET masses 26.5 t and holds 735 t of propellant, compared to the proposed Jupiter EDS dry mass of 17.5 t (less engines) and 359.1 t of propellant.Yes that's right, the ET holds 100% more yet weighs only 50% more than what's claimed for Jupiter EDS. And a big chunk of the ET mass is the intertank containing the SRB thrust structure, (it actually outweighs the LOX tank). Jupiter EDS doesn't look nearly so cutting edge now, does it? And don't give me that "the External Tank isn't a real stage, it doesn't have engines" BS. The above link is comparing stages, less engines, and the ET has more than equivalent thrust structures, etc.
Please go purchase a copy!
Well, it isn't a real stage.
Quote from: Will on 01/08/2009 04:56 pmWell, it isn't a real stage.Sure it is; it's one with side-mounted, jettisonable engines and controls. Structurally it's a stage. Get over it and pick something else to poke at.
So, Ross and Chuck are going to be on an episode of Battlestar Galactica?
Quote from: Herb Schaltegger on 01/08/2009 06:02 pmQuote from: Will on 01/08/2009 04:56 pmWell, it isn't a real stage.Sure it is; it's one with side-mounted, jettisonable engines and controls. Structurally it's a stage. Get over it and pick something else to poke at.It's not a good idea to dismiss criticism.DIRECT will be reviewed by NASA under their own terms.
Wow, that's a nice cover and on a big publication.Is that one of your graphics Pheogh?Quote from: guru on 01/08/2009 04:38 pmSo, Ross and Chuck are going to be on an episode of Battlestar Galactica?Moon, Mars and New Caprica?