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Armadillo Aerospace drop test
OM wrote:
On Tue, 15 Jul 2003 17:28:28 -0700, Scott Lowther wrote: Moral of the story: a few people working fast and cheap can do amazing things with minimal documentation. ...Gee, thanks Scott. I now have this picture of the X-Prize being won by a bunch of inbred, greasy, blue-collar high school dropout shade tree mechanics :-P Don't count 'em out. Rockets aren't hard if you have time and real estate. Your description would be of just the right people, if they're properly motivated. -- Scott Lowther, Engineer "Any statement by Edward Wright that starts with 'You seem to think that...' is wrong. Always. It's a law of Usenet, like Godwin's." - Jorge R. Frank, 11 Nov 2002 |
#42
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Armadillo Aerospace drop test
On Tue, 15 Jul 2003 21:15:47 -0700, Scott Lowther
wrote: OM wrote: On Tue, 15 Jul 2003 17:28:28 -0700, Scott Lowther wrote: Moral of the story: a few people working fast and cheap can do amazing things with minimal documentation. ...Gee, thanks Scott. I now have this picture of the X-Prize being won by a bunch of inbred, greasy, blue-collar high school dropout shade tree mechanics :-P Don't count 'em out. Rockets aren't hard if you have time and real estate. Your description would be of just the right people, if they're properly motivated. "Hey Gomer! You sure you know what you're doin' with that there solid rocket fuel?" "Yep, I sure do, Goober. I learned all about how to mix this here stuff together when I was in the Yoo-nited States Marine Corps, and when I'm finished, we'll strap those three rockets on the side of that tanker rig that Barney impounded and get ready to send Andy into orbit!" "And if that works, he's goin' to the Moon? F'Real?" "Surprise! Surprise! Surprise!" OM -- "No ******* ever won a war by dying for | http://www.io.com/~o_m his country. He won it by making the other | Sergeant-At-Arms poor dumb ******* die for his country." | Human O-Ring Society - General George S. Patton, Jr |
#43
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Armadillo Aerospace drop test
(Henry Spencer) wrote in message ...
People have been hot on the trail of PDEs for a very, very long time. See, for example, the PDE paper in the May 1957 issue of the ARS Journal. A cynic would say that half a century of getting no useful results is plenty of data from which to extrapolate the probable rate of further progress... Well, does anyone know what the current state of affairs is for PDEs right now? I'd read that single-detonation tests have been done successfully, but it's the repeat-cycle detonations that haven't been reached yet. http://www.grc.nasa.gov/WWW/AERO/base/pdet.htm The webpage above says: "High frequency (60 Hz) pulse detonation combustors have been developed over the past 5 years by several commercial firms and government laboratories in configurations consistent with aerospace propulsion applications." But what's the difference between Pulse Detonation Combustors and Pulse Detonation Engines? What do you have to do, to go from a Pulse Detonation Combustor to a Pulse Detonation Engine? Are these PDCs something that you can buy and convert into PDEs? How much does a commercial PDC cost? How big are these things? |
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