Author Topic: RLV-TD HEX-01 (Suborbital), May 23, 2016  (Read 83813 times)

Offline johnxx9

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RLV-TD HEX-01 (Suborbital), May 23, 2016
« on: 10/04/2014 04:54 PM »
This TD launch was long due. We are still not certain when exactly it will take place. The 2014 Annual Report mentions 2014 but this one has already missed a lot of dates (from 2009).

Please post updates on this TD launch if and when they come out. Posting some technical information for this flight.
« Last Edit: 05/07/2016 09:03 AM by input~2 »

Offline antriksh

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #1 on: 10/04/2014 05:24 PM »
I am avidly waiting fir this test. Fifth year plan (2012-2017) talks about three HEX missions. Lets see how many missions will really be required to understand the hypersonic regime. I dont see a TSTO launcher materialise by 2025. ISRO already has some technologies for  TSTO second stage  based on SRE experiments. RLVtd will provide technologies particularly winged body fly back booster for first stage of TSTO. What will take long time is developing a SC-460 stage with 3 clustered semi-cryo engines for the first stage  and C60 stage with 2 clustered cryogenic engines for the second stage.
Nasadiya Sukta:
Srishti se pehle sat nahin thaa, asat bhi nahin | Antariksh bhi nahin, aakaash bhi nahin thaa | chhipaa thaa kyaa, kahaan, kisne dhakaa thaa | us pal to agam, atal jal bhi kahaan thaa ||

From: 1st verse of 129th Hymn of the 10th Book of Rig Veda

Offline johnxx9

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #2 on: 10/04/2014 05:41 PM »
I am avidly waiting fir this test. Fifth year plan (2012-2017) talks about three HEX missions. Lets see how many missions will really be required to understand the hypersonic regime. I dont see a TSTO launcher materialise by 2025. ISRO already has some technologies for  TSTO second stage  based on SRE experiments. RLVtd will provide technologies particularly winged body fly back booster for first stage of TSTO. What will take long time is developing a SC-460 stage with 3 clustered semi-cryo engines for the first stage  and C60 stage with 2 clustered cryogenic engines for the second stage.

Yes! It's actually 4 TD missions.

HEX (Hypersonic Flight Experiment)
LEX (Landing Experiment)
REX (Return Flight Experiment)
SPEX (Scramjet Propulsion Experiment)

This is a photo of the poster during Aero India 2009 taken by me.

« Last Edit: 10/04/2014 05:42 PM by johnxx9 »

Offline sanman

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #3 on: 10/04/2014 09:50 PM »
animation:



I too am eagerly awaiting this series of tests for RLV technology.

Here are some past threads on the subject:

http://forum.nasaspaceflight.com/index.php?topic=27701.0

http://forum.nasaspaceflight.com/index.php?topic=25695.0

Offline vyoma

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #4 on: 11/16/2014 04:19 PM »
Quote
[ISRO Chairman Dr K Radhakrishnan] said the technology demonstration experiment towards a reusable launch vehicle, will be ready within a year.

http://newsonair.nic.in/news.asp?cat=National&id=NN6130

Offline antriksh

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #5 on: 11/17/2014 12:48 AM »
Quote
[ISRO Chairman Dr K Radhakrishnan] said the technology demonstration experiment towards a reusable launch vehicle, will be ready within a year.

http://newsonair.nic.in/news.asp?cat=National&id=NN6130

This is  getting a bit irritating. its always within one year.  :(
« Last Edit: 11/17/2014 12:57 AM by antriksh »
Nasadiya Sukta:
Srishti se pehle sat nahin thaa, asat bhi nahin | Antariksh bhi nahin, aakaash bhi nahin thaa | chhipaa thaa kyaa, kahaan, kisne dhakaa thaa | us pal to agam, atal jal bhi kahaan thaa ||

From: 1st verse of 129th Hymn of the 10th Book of Rig Veda

Offline vyoma

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #6 on: 11/17/2014 01:35 AM »
Yes :(

2014-2015 Budget Outcome lists following related to RLV-TD:
Quote
Major Achievements During 2013-2014:
- RLV-TD - High altitude Radar Altimeter balloon test with silica tiles was successfully conducted up to an altitude of 700 m at TIFR;

- Delivered launch vehicle Inertial Systems (RESINS, RPG and GAINS) for PSLV-C25, RLV-TD (RESINS MKIV R-QM) and GSLV-MK3 (RESINS MKIVA-QM) missions.

- Realized qualification model of HDAS for RLV-TD;

Quote
Major Activities Planned During 2014-2015:
- Flight integration and launch of RLV-HEX 01 mission;

Hopefully we might see something in next two years :)

Offline abhishek

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #7 on: 12/06/2014 08:25 AM »
Quote
The International Space Station (ISS)— the largest spacecraft ever built—faces an uncertain future with Russia's decision to walk away from it. Moscow's international obligations vis-a-vis the orbiting laboratory were expected to continue well into the next decade. But terrestrial realpolitik caught up with the $100 billion space station in November when Russia's space agency Roscosmos conveyed to NASA that it would end its participation in the ISS by 2020.

ISRO has expressed its eagerness to join the ISS. If that happens, unexpected support for the ISS could come from India's Reusable Launch Vehicle (RLV) which is nearing its final stages of testing. The RLV—a hyperplane that can touch outer space, launch satellites and return to Earth—has the potential to become an effective space taxi for the ISS, too.


http://economictimes.indiatimes.com/articleshow/45391446.cms?utm_source=contentofinterest&utm_medium=text&utm_campaign=cppst
10, 9, ignition sequence start 6, 5, 4, 3, 2, 1, 0, all engines running Lift off, we have a lift off, lift off

Offline sanman

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #8 on: 12/06/2014 03:29 PM »
That article sounds like nonsense. The RLV that India is testing is just a small testbed, and nothing more. By the time India could create the TSTO, the ISS would no longer be in service anymore. It's unfortunate that TSTO is being made to wait until after ULV is started, although I suppose ULV is a logical extension of GSLV Mark-3.

Offline johnxx9

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #9 on: 12/06/2014 04:39 PM »
That article sounds like nonsense. The RLV that India is testing is just a small testbed, and nothing more. By the time India could create the TSTO, the ISS would no longer be in service anymore. It's unfortunate that TSTO is being made to wait until after ULV is started, although I suppose ULV is a logical extension of GSLV Mark-3.

The semi cryogenic engine is the basis for both ULV and RLV. Whatever additional technology RLV needs is being tested through RLV TD program. But once the SCE is ready, the ULV can be developed comparatively easily than RLV.

Online savuporo

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #10 on: 12/23/2014 06:19 PM »
Came across this presentation talking about control and guidance development for RLV-TD
http://www.sc.iitb.ac.in/~pdsc2014/MVD_talk.pdf

EDIT: also found this on Reddit as a reply posted to sanman
Quote
RLV, HSP etc all will undergo a fast forward now that the cryo engine is here. For HSP, there still is a long way to go with GSLV Mk-III, human rated vehicles and lots of testing

« Last Edit: 12/23/2014 06:31 PM by savuporo »
Orion - the first and only manned not-too-deep-space craft

Offline Moe Grills

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #11 on: 12/24/2014 09:22 PM »
   I don't understand the need for that craft.
Does India have military goals for that potential winged orbiter?
Space tourism perhaps for the suborbital version in the future?
Or is India planning an winged orbiter for science and civilian astronauts?

Offline Kryten

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #12 on: 12/24/2014 10:14 PM »
None of the above. It's ultimately intended to lead to a two-stage uncrewed RLV.

Offline vyoma

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #13 on: 01/05/2015 09:12 AM »
http://www.livemint.com/Politics/rQIXOa8IJ68k5q9ZZYzlNM/Isro-to-carry-out-wingedreusable-rocket-tech-demo.html

Quote
Isro will carry out the technology demonstration of the reusable launch vehicle in March, the official said.

Quote
“The structure that makes a rocket has to be such that it should have 98% propellant and 2% structure. Only then reusability is possible. Today’s technology does not allow you to go to that level as 5% to 10% will be the mass of the structure and around 90% will be the propellant,” said S. Somanath, associate director of Isro’s Vikram Sarabhai Space Centre (VSSC).

Quote
VSSC is trying to develop a Winged Reusable Launch Vehicle Technology Demonstrator (RLV-TD) which will act as a flying tester to assess hypersonic flight, autonomous landing, powered cruise flight and hypersonic flight using air-breathing propulsion. Isro is currently integrating the flight model.

In the technology demonstrator, Isro will test if the 12-tonne vehicle can reach five times the speed of sound, whether it can re-enter the atmosphere and land on the sea using its computer system. To be sure, this will be a technological demonstration and the tested vehicle will not be reusable. The VSSC director explained that take-off will be vertical like a rocket, and landing will be like that of an aircraft.
« Last Edit: 01/05/2015 11:58 AM by vyoma »

Offline antriksh

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #14 on: 01/06/2015 01:14 AM »
Another leap in space: India to test reusable vehicle in March



Quote
The next experiment would be to land the vehicle on a 2km runway after releasing it from an aircraft from a height of about 5km. The third step would be to take it to a higher altitude and try the ground landing. "As the next step, we would try an air-breaking engine which is under development at Isro," Somanath said.


Quote

The multiple demonstration missions will lead to what Isro envisions as a 'two stage to orbit (TSTO) fully reusable vehicle. While India spends Rs300 crore upwards for satellite launches, reusable vehicles hold the key to more affordable launches. Today putting a 1kg object in space costs about $5000. "This should be brought down to at least $500. And reusable vehicles are the answer," said Somanath.



Nasadiya Sukta:
Srishti se pehle sat nahin thaa, asat bhi nahin | Antariksh bhi nahin, aakaash bhi nahin thaa | chhipaa thaa kyaa, kahaan, kisne dhakaa thaa | us pal to agam, atal jal bhi kahaan thaa ||

From: 1st verse of 129th Hymn of the 10th Book of Rig Veda

Offline antriksh

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #15 on: 02/27/2015 03:41 PM »
ISRO Plans to Test-fly Reusable Launch Vehicle by Mid-2015

Quote
The test-flight will take place either by the end of the first half of this year or the beginning of the second half. Work is progressing satisfactorily
Nasadiya Sukta:
Srishti se pehle sat nahin thaa, asat bhi nahin | Antariksh bhi nahin, aakaash bhi nahin thaa | chhipaa thaa kyaa, kahaan, kisne dhakaa thaa | us pal to agam, atal jal bhi kahaan thaa ||

From: 1st verse of 129th Hymn of the 10th Book of Rig Veda

Offline AJA

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #16 on: 03/01/2015 10:46 AM »
Another leap in space: India to test reusable vehicle in March


The RLV will land on water, because we don't have a 5 km runway? What?


First of all, for context - even the Shuttle Landing Facility runway is < 5 km in length. But let's assume that a larger vehicle faced more drag, and came in slower. That still leaves me baffled.


How hard can it be to build a runway of requisite length? The article says that they already have the land! (The budget doesn't mention anything about the RLV though, so it might be impeded by administrative speed-bumps)


Thirdly, if the RLV is coming in that hot - as to need a 5 km runway - is it really going to remain intact after splashdown? Isn't any trajectory that allows for a safe splashdown, also sufficient to allow the RLV to land on a shorter runway? I would've thought splashdown criterion would be stricter!


I don't have the information, but I'd like to think the reason we're going for a splashdown is to avoid the complexity of having pressurised tyres and deployable landing gear (with cuts and doors in the heat shield). That, and the untested nature of the vehicle and needing to keep everyone on the ground safe in case of loss of control.


The air-dropped version probably won't have a heat-shield, and won't be a full-fidelity mockup of the sub-orbital, or the orbital test-bed.

Offline TrevorMonty

Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #17 on: 03/01/2015 09:14 PM »
They should be a lot of interest internationally in this test. ESA, Russia, Japan are or had investigated fly back RLVs. The outcome of these tests will prove whether it is technically viable, SpaceX are already showing boost back RLVs are possible.

It is nice to see there is more than one organisation actively pursuing RLV development and using a different approach.
« Last Edit: 03/01/2015 09:22 PM by TrevorMonty »

Offline vyoma

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #18 on: 03/27/2015 04:33 AM »
http://www.deccanchronicle.com/150327/nation-current-affairs/article/isro-rockets-make-safe-landings-too

Quote
In its first flight in June, it will be propelled into space at about six times the speed of sound by a booster, and return after touching an altitude of 70 km. The booster and the reusable launch vehicle (RLV) will plummet into the Bay of Bengal, but once operational both will touch down on return, Dr A.S. Kiran Kumar, Chairman, Isro, told Deccan Chronicle, adding “ground tests are on for the first flight scheduled for the end of the first half of this year.

Offline antriksh

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Re: RLV-TD HEX-01 (Suborbital), 2014/2015
« Reply #19 on: 04/01/2015 04:07 PM »
Nasadiya Sukta:
Srishti se pehle sat nahin thaa, asat bhi nahin | Antariksh bhi nahin, aakaash bhi nahin thaa | chhipaa thaa kyaa, kahaan, kisne dhakaa thaa | us pal to agam, atal jal bhi kahaan thaa ||

From: 1st verse of 129th Hymn of the 10th Book of Rig Veda