New X-Plane Coming: Introducing the X-51A, page 1
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reply posted on 12-1-2006 @ 07:59 AM by kilcoo316
I might as well stick this here instead of opening a new thread:


India has joined the scramjet 'business':

www.hindu.com...


The SCRAMJET technology is still in a nascent stage of development the world over. India is the second country after the U.S. to have advanced this far. "Other than the U.S., which has recently carried out in-flight demonstration of supersonic combustion for a short duration, work related to supersonic designs in other countries such as Japan, China, Russia, Australia, Europe and others are either in their initial or ground testing phase," ISRO said in a release. Through a series of ground tests, a stable supersonic combustion was demonstrated at the VSSC for nearly seven seconds with an inlet Mach number of six (six times the speed of sound), the release said.



I confess I don't quite understand what their testing method was as the next paragraph would tend to conflict with the above:



It is learnt that an in-flight test SCRAMJET using a rocket was likely to take place in 2007. "In the coming years, ISRO is planning to flight test an integrated SCRAMJET propulsion system comprising air-intake, combustor and nozzle, by using a cost effective, two-stage RH-560 sounding rocket. Development of such a high technology system will come in a big way towards meeting the futuristic space transportation needs of our country." The cost of the current test was about 15 times lower than a similar test in the U.S.


Anyway, there is the info for you all and here is another link:

sify.com...




*I took this info from the space exploration forum on ATS, original poster was Netscape.

[edit on 12-1-2006 by kilcoo316]


reply posted on 12-1-2006 @ 09:00 PM by ch1466
Unfortunately,

I can only comment generally as the LINK url is already dated and Google doesn't do much with the Antelope Valley Gazette coming up blank, even cached.

That said, the realities are this:

1. Waverider and scramtechnologies take about four stories worth of joints and stage seals and careful balancing and nav compensation of same from your typical TBM. To potentially stuff them into a vehicle the size of two desks side by hip (the X-43 is 12ft long). That's a very bad idea, even if the design is little more than a recce capability or an airburst EMP warhead designed to starve /everybody/ of high end C4ISR at zero rad count.

2. You can indeed use scram technology as both first (variable cycle) and second stage ('pure' supersonic combustion with air liquification cryofuel bleed) to get either ssto (big) or Sanger like orbital insert. Again, this sucks buttermilk because it makes it impossible to be 'definitive' in terms of owning the high frontier while nobody else does. Once you start down the road of competitive overhead; you have to talk space warfare (publically) to secure your operating capabilities and that will only make more people mad at U.S. exclusivity. Or worse, delighted, because we own most of the big birds in orbit and are soon going to run out of HLV options to replace hundred million dollar assets.

3. /At some point/ you start to see the potential of 'tactical' (conventional and repeatable) global bombardment systems which will encourage the formation of nation-leagues whose sole purpose is to hostage U.S. aggression by threatening non-contiguous counter interdiction in return for whatever our theater assets do to cripple a 'rogue states' infrastructure as a kind of pot:kettle blackmail.
TAVs which can lob building killer explosives weighing only five hundred pounds, halfway around the world, make a joke out of all the promise that the cryo fuels (hydrogen's power density is almost a prerequiste for the hypersonic realm) could bring to OUR lives, in transport and electrical generation.


Nothing good comes from bringing disparate, competitive, cultures closer together when the objective is to be seen as 'equals' under blatantly military program (death or bust) goals for functionality of the tech.

India is the largest nation on the planet now in terms of population yet continues to have one of the lowest per capital living wages of any industrialized nation Outside the cities they are a virtual stone age economy.

NASA's ability to see the weather has not markedly improved in 20 years (Weather Channel as a spectator sport, I swear...), nor does it need to. Yet they fail to investigate means to moderate meteorologic events 'because that's too hard'. And so class-4/5 hurricanes hit the south coast and waste billions.

This nation is fighting an 'unacknowledged' war for oil with 3,279 terrawatt hour generation requireemnt vastly beyond wind or (terrestrial) solar power replacement capabilities. Yet they won't admit that ALL THE POWER WE NEED is up in orbit with 30-50% efficiency solar power stations and microwave relays. If only there was something more than a god forsaken /weapon/ able to lift the heavy components up there.

Hypersonics don't impress much when there are so many more powerful and life threatening science projects to better, slower, longer, FINISH here at home.


KPl.


reply posted on 13-1-2006 @ 12:56 AM by Murcielago
This is obviosly the next step up from the successfull Hyper-X demonstrations.

(I think) Its old name was SED (Scramjet Engine Demonstrator), its seems now its more "official".
Heres the P&W link about it.
SED


BTW...Has any one found any artist renderings of it???
In case you didn't know, the pic Intelgurl posted is a rendering of the (cancelled) X-43B.

Heres a link about the X-51. (Since Intelgurls main link isn't working)
X-51

some quotes from it:

Lab research indicates the engine, known as a scramjet, can propel an aircraft at more than five times the speed of sound. Researchers hope to fly five to eight unmanned X-51 As at speeds up to seven times the speed of sound, or about 4,600 mph.


Program Director Charles Brink said the goal is five to 10 minutes of scramjet-powered flight for a dash of up to 600 nautical miles.


[edit on 13-1-2006 by Murcielago]
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