sunny y wrote:
^^^^Thanks a lot for this valuable information.
Regarding the 2050 timeline. Is this the deadline only for ISRO's AVATAR or for both AVATAR & HSTDV. I mean if DRDO is rolling out the first prototype by the end of 2009 then 40 years to make the product useful is too much. Can u please shed some light on that ??
As you have mentioned this prototype will be retreived by parachutes. But DRDO is also planning to make this aircraft capable of of landing horizontally. Can u please tell us about the progress that has been acheived in this area ??
And finally what about China ?? Does China also have a similiar project ?? If not then I believe this is the perfect opportunity for us to be ahead of them.
Thanks
Its the deadline for both ISRO and DRDO. Building a prototype test vehicle and building a full scale system that is capable of practical use, are two very different things. Even USA which is the only country to test a sustained hypersonic flight, can't be put to practical use. Building a missile or rocket travels at hypersonic speeds is one thing and using scramjet for hypersonic flight is another. Ruskies and Ameerkhans have done some progress, but more like a single projectile. Moreover for AVATAR/HSTDV to work, we are looking at altitude above 25 km with a significant payload of min. 1 ton for HSTDV and a much more higher altitude for AVATAR. There is no country in this world who can do that as of today. Even the NASA experiment was a hypersonic cruise at the altitude of 29 km, but please note, there was no PAYLOAD, just SCRAMJET demonstration. According to the technomullahs as ISRO, the biggest challenge is materials needed to develop these vehicles. Materials with higher strength and very low density, than any other alloys that we know today. ISRO is confident that they would be able to achieve TSTO by 2015-20 with 1 Ton payload. But it won't help us much, but never the less a very brilliant step in the correct direction.
Even by 2050, forget SSTO, if we can come up with a practical working solution which is capable of putting 10 Tons in LEO, that will be a beginning of the GOLDEN period of India. Jingo's can imagine that when space ferry cost drops to 67$ per kg, compared to present day 20,000$ per kg, what wonders it can do.
The first test by 2009 end or probably by 2010 will be a scaled down version of RLV-TD. It will be used to prove Re-entry concepts, aerodynamics, hypersonic cruise sustainability and fuel dispatch at hypersonic speeds. It will also validate the design of RLV. ISRO is pegging that the Re-entry study is the most important thing for RLV as well as all future re-entry vehicles. Once things are proven, there will be one more test. Its not clear as of now, whether the second test will be the actual version or again the RLV-TD. The final version would be the full scaled version capable of putting 1 Ton payload in LEO by 2015.
DRDO is probably testing on its own, but that news is very tightly guarded.
For these two projects, I recon the benchmark would be AVATAR. HSTDV is not gonna be as tough compared to AVATAR. Once we have AVATAR working, we can imagine a UCAV version of AVATAR which travels at hypersonic speed, delivers multiple "GIFTS" all across the world and comes back to the origin, and lands like a conventional aircraft. After this system comes into function, there will be not more than 1 or 2 countries in the world, who would possess a SAM that is capable of engaging HSTDV at that altitude and at that speed.
In one of my other posts, I had also suggested, how HSTDV can be used to sport air-to-air hypersonic missiles, to take out ballistic missiles in boost phase.
The opportunities are infinite, and I really hope that more young people get inspired by this and join ISRO, and make this dream come true!!! AMEN