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Hypersonic Jets Prepare to Soar
aviation ^
| 28 September 2007
| Chris Kjelgaard
Posted on 09/28/2007 10:34:42 AM PDT by Freeport
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To: Freeport
41
posted on
09/28/2007 11:57:44 AM PDT
by
Sonny M
("oderint dum metuant")
To: OCC
Orion should have been flying 6 years ago..
Instead we have to wait 6 years for this Orion to fly.
42
posted on
09/28/2007 11:58:56 AM PDT
by
OCC
To: Minn
" Whats the New York to Paris time of that flight?"
Why would you want to go to Paris?
To: DoughtyOne
I heard a rumor that the Aurora used some “external burning” on its wing. Basically, you shoot some fuel just behind the shock wave and use the shock wave as part of the containment of the explosion, which is taking place ON THE WING. That would make for an exciting civilian ride, eh?
44
posted on
09/28/2007 12:01:27 PM PDT
by
Kevmo
(We should withdraw from Iraq — via Tehran. And Duncan Hunter is just the man to get that job done.)
To: Minn
Mach is, depending on altitude, about 650mph at 36000 ft so mach 5 is about 3250mph. It’s about 3600 miles. from NY to Paris so it looks like it would take about 1 hour 10 minutes.
To: DoughtyOne
I guess you can even catch the rumors on the web these days. It’s a lot easier than it used to be.
http://www.sushi-x.com/gallery/nonseq/aurora/aurora.html
Aurora, America’s hypersonic spyplane.
Aurora is a general name for a family of hypersonic vehicles. The unusual version depicted here has two modes of propulsion, a ram jet for traveling at subsonic, and supersonicspeeds, and an external burning engine for hypersonic travel. In the latter case, fuel is sprayed within the shockwave created by the vehicle, and the enormous temperatures generated by hypersonic speeds ignites the fuel. The explosion propels the craft forward, similar to squeezing a wet pumpkin seed between your fingers.
46
posted on
09/28/2007 12:05:10 PM PDT
by
Kevmo
(We should withdraw from Iraq — via Tehran. And Duncan Hunter is just the man to get that job done.)
To: Kevmo
Exciting... yeah! Count me in.
For commercial use, not if this is the true configuration. The Aurora was reported to have used pulse engines. That may also rule it out as a commercially viable transition.
47
posted on
09/28/2007 12:05:10 PM PDT
by
DoughtyOne
(Hillary has pay fever. There she goes now... "Ha Hsu, ha hsu, haaaa hsu, ha hsu...")
To: Kevmo
Thanks Kevmo. I’ll check your link out later.
48
posted on
09/28/2007 12:06:25 PM PDT
by
DoughtyOne
(Hillary has pay fever. There she goes now... "Ha Hsu, ha hsu, haaaa hsu, ha hsu...")
To: DoughtyOne
Darn, I wish those hypersonic eggheads at Area 51 would be more considerate and build technology that might filter down to me some day!
49
posted on
09/28/2007 12:06:37 PM PDT
by
Kevmo
(We should withdraw from Iraq — via Tehran. And Duncan Hunter is just the man to get that job done.)
To: Freeport
What time does your flight arrive?
5 minutes before takeoff.
50
posted on
09/28/2007 12:10:32 PM PDT
by
N. Theknow
(Kennedys: Can't drive, can't fly, can't ski, can't skipper a boat; but they know what's best for us)
China just landed men on mars.
51
posted on
09/28/2007 12:15:56 PM PDT
by
evets
(beer)
To: Shryke
I’m pretty sure SR-71 used JP-7, too.
To: Calvin Locke
JP-7 was actually developed for the SR-71 (its A-12 predecessor). It was used in the cooling, then hydraulics, THEN for fuel. HUGE amounts of modern avionics came from that aircraft’s development.
53
posted on
09/28/2007 1:42:01 PM PDT
by
Shryke
To: Freeport
I think the magic number is $400 to go from NY to London in less than one hour.
If they hit that price in todays dollars it will be society altering.
54
posted on
09/28/2007 1:51:55 PM PDT
by
longtermmemmory
(VOTE! http://www.senate.gov and http://www.house.gov)
To: Paleo Conservative
55
posted on
09/28/2007 2:05:02 PM PDT
by
raygun
(Boy that Catch-22 is a pretty big catch. Yep, its the best that there is.)
To: Kevmo
I guess you can even catch the rumors on the web these days. Its a lot easier than it used to be.
Wikipedia has an article about Aurora too. So much for the theory that "loose lips sink ships"....
I don't want to look up the HTML right now to "linkasize" this (feeling lazy), so you'll have to just use old-fashioned cut and paste to put the following URL into your browser....
http://en.wikipedia.org/wiki/Aurora_aircraft
56
posted on
09/28/2007 2:12:41 PM PDT
by
Zetman
To: Freeport
"... and NYC to London is 3460 miles." Is that a great circle distance or a straignt line on a map?
57
posted on
09/28/2007 2:16:21 PM PDT
by
avacado
To: Zetman
58
posted on
09/28/2007 2:25:02 PM PDT
by
Kevmo
(We should withdraw from Iraq — via Tehran. And Duncan Hunter is just the man to get that job done.)
To: Shryke
Constructing an air frame that can withstand that kind of stress is not exactly easy. Ever read up on what happens to the SR-71 during its flights? Yep, the fuel takes tighten up and stop leaking, and the titanium flight surfaces heats and warps a bit. Essentially, after it has cooled down, you have a new aircraft after every flight. Well, new or different flight characteristics than the previous flight.
Makes sense they're using the 71's fuel, and using it in the engine cooling system just like the BlackBird.
That Kelly Johnson sure was ahead of his time.
59
posted on
09/28/2007 2:47:21 PM PDT
by
AFreeBird
(Will NOT vote for Rudy. <--- notice the period)
To: AFreeBird
60
posted on
09/28/2007 2:48:07 PM PDT
by
AFreeBird
(Will NOT vote for Rudy. <--- notice the period)
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