Author Topic: ISRO Unified Launch Vehicle (ULV)  (Read 41644 times)

Offline antriksh

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ISRO Unified Launch Vehicle (ULV)
« on: 05/03/2013 03:55 PM »
ULV configurations (ULVs long term goal is to replace PSLV, GSLV & LVM MK3 with a LV having common core stages (semi-cryo stage (SC-160) & cryo stage (C25)) and solid boosters with variable fuel loading.
« Last Edit: 05/03/2013 03:59 PM 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 Danderman

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Re: ISRO Unified Launch Vehicle (ULV)
« Reply #1 on: 05/03/2013 04:02 PM »
I am guessing that the large core is kerosene powered, and there is a small LH2 powered upper stage. If it's the reverse, that would be sad.

Offline antriksh

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Re: ISRO Unified Launch Vehicle (ULV)
« Reply #2 on: 05/03/2013 04:10 PM »
I am guessing that the large core is kerosene powered, and there is a small LH2 powered upper stage. If it's the reverse, that would be sad.


Yes, the large core/first stage is kerosene + LOX powered with 2000 kn thrust engine (1-2 engine, nos not confirmed). The engine is under development. Second stage would be LH2+LOX.
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

Online russianhalo117

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Re: ISRO Unified Launch Vehicle (ULV)
« Reply #3 on: 05/03/2013 04:58 PM »
I am guessing that the large core is kerosene powered, and there is a small LH2 powered upper stage. If it's the reverse, that would be sad.


Yes, the large core/first stage is kerosene + LOX powered with 2000 kn thrust engine (1-2 engine, nos not confirmed). The engine is under development. Second stage would be LH2+LOX.
Can you post some links to your sources.

Offline K210

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Re: ISRO Unified Launch Vehicle (ULV)
« Reply #4 on: 05/12/2013 04:39 AM »
Any news on 2000kn semi-cryo engine that ISRO is developing?

Offline antriksh

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Re: ISRO Unified Launch Vehicle (ULV)
« Reply #5 on: 05/15/2013 02:33 AM »
I am guessing that the large core is kerosene powered, and there is a small LH2 powered upper stage. If it's the reverse, that would be sad.


Yes, the large core/first stage is kerosene + LOX powered with 2000 kn thrust engine (1-2 engine, nos not confirmed). The engine is under development. Second stage would be LH2+LOX.
Can you post some links to your sources.

Do you want his address?  ;D
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: ISRO Unified Launch Vehicle (ULV)
« Reply #6 on: 05/15/2013 02:40 AM »
Any news on 2000kn semi-cryo engine that ISRO is developing?

As per ISRO:

The Preliminary Design Review (PDR) for Semi-cryogenic engine development has been completed. Preparation of fabrication drawings of subsystems have been completed. A MOU has been signed with NFTDC for the realisation of copper alloy for Thrust chamber. Single element Pre-Burner (PB) injector realised and injector spray charaterisation using PIV was carried out. Test facility for single element pre-burner commissioned at PRG facility, VSSC. Semi Cryo Test facility design by M/s Rolta has been completed.


Design of Semi Cryo Engine including heat exchanger and ejector is competed. Fabrication drawings and documents are generated based on the PDR and joint reviews. Configuration design of subscale engine is completed. Preliminary Design Review (PDR) of Hydraulic Actuation System
(HAS) and Hydraulic Power System (HPS) for Engine Gimbal control is completed and Technical specifications are finalized.

Single Element Pre-Burner injector element has been hot tested successfully. Ignition of LOX/Isrosene propellant with hypergolic slug igniter and flame holding, demonstration of safe handling of pyrophoric fluid TEA, validation of start sequence, characterization of injector elements and qualification of Hayness-214 material are the major achievements of the tests.

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 Salo

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Re: ISRO Unified Launch Vehicle (ULV)
« Reply #7 on: 07/24/2013 08:54 PM »
http://www.frontline.in/science-and-technology/in-mission-mode/article4945199.ece?homepage=true
Quote
What is the Unified Launch Vehicle of ISRO?

K. Radhakrishnan:
That comes later. Today, we have the GSLV, and GSLV–Mark III is being developed. Of course, we have plans for an experimental mission of GSLV–Mark III.
...
In semi-cryogenic engine development, we had one test of the single injector element of semi-cryogenics done, the first combustion. But we have a long way to go. There is a massive test facility to be created for testing the semi-cryogenic engine and the sub-systems. All this is in the early phase, I would say.

You asked about the Unified Launch Vehicle. It is a future expendable launch vehicle concept. It is modular in shape, comprising semi-cryogenics as booster, a cryogenics as upper stage and strap-ons of different magnitudes made of solid rockets. It can be S-200, S-139 or S-9, depending on the payload requirement. The ULV is slightly futuristic.

Offline K210

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Re: ISRO Unified Launch Vehicle (ULV)
« Reply #8 on: 08/18/2013 06:56 AM »
Why does the LEO lift max out at 15 tons? ISRO should aim to have a rocket that can launch at least 30 - 40 tons into orbit in case they ever decide to build a space station or contribute to one. Besides having a rocket of this capability could be useful because it would cut costs by being able to launch multiple combination satellites in one go.

Offline baldusi

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Re: ISRO Unified Launch Vehicle (ULV)
« Reply #9 on: 08/18/2013 01:51 PM »
What real requirement for 30tons to LEO exist, really?
I still don't like this approach. I think that having 4 different solids designs is a waste of design effort. Than and I seriously doubt they can do this with a single core. They will end up with something like the Delta IV before the RS-68A. Now, if they use S85 or so solid, with 0, 2, 4 and 6. They could very well cover nearly the same  spectrum of payloads and have a much more simplified logistics. Plus, a lot of launch flexibility. You have a GTO customer that's willing to pay a premium to forward the launch? Just bump the SSO small sat a quarter and use that core.

Offline K210

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Re: ISRO Unified Launch Vehicle (ULV)
« Reply #10 on: 08/19/2013 12:45 AM »
What real requirement for 30tons to LEO exist, really?
I still don't like this approach. I think that having 4 different solids designs is a waste of design effort. Than and I seriously doubt they can do this with a single core. They will end up with something like the Delta IV before the RS-68A. Now, if they use S85 or so solid, with 0, 2, 4 and 6. They could very well cover nearly the same  spectrum of payloads and have a much more simplified logistics. Plus, a lot of launch flexibility. You have a GTO customer that's willing to pay a premium to forward the launch? Just bump the SSO small sat a quarter and use that core.

Well a rocket with 30 tons LEO capability could be used to launch space station modules, resupply missions and heavy probes on trajectories to the outer solar system. If no need existed for such rockets then the Ariane 5 and long March 5 would not have been developed. Personally i don't really like this design either - it's too reliant on solid-fueled strap-ons to provide most of the liftoff thrust but cost must also be taken into account since ISRO's budget is tiny compared to NASA and ESA. Solid fuelled strap-ons are cost effective hence they will lower costs in the long run.

Online sanman

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Re: ISRO Unified Launch Vehicle (ULV)
« Reply #11 on: 08/19/2013 01:18 AM »
Until SpaceX demonstrates the superior cost benefits of reusable liquid engines, then solid strap-ons will continue to look very attractive - especially with heavier payloads.

Offline antriksh

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Re: ISRO Unified Launch Vehicle (ULV)
« Reply #12 on: 08/19/2013 02:40 AM »
What real requirement for 30tons to LEO exist, really?
I still don't like this approach. I think that having 4 different solids designs is a waste of design effort. Than and I seriously doubt they can do this with a single core. They will end up with something like the Delta IV before the RS-68A. Now, if they use S85 or so solid, with 0, 2, 4 and 6. They could very well cover nearly the same  spectrum of payloads and have a much more simplified logistics. Plus, a lot of launch flexibility. You have a GTO customer that's willing to pay a premium to forward the launch? Just bump the SSO small sat a quarter and use that core.

Well a rocket with 30 tons LEO capability could be used to launch space station modules, resupply missions and heavy probes on trajectories to the outer solar system. If no need existed for such rockets then the Ariane 5 and long March 5 would not have been developed. Personally i don't really like this design either - it's too reliant on solid-fueled strap-ons to provide most of the liftoff thrust but cost must also be taken into account since ISRO's budget is tiny compared to NASA and ESA. Solid fuelled strap-ons are cost effective hence they will lower costs in the long run.


ULV capacity can be boosted to 25 tons by utilizing modified core stage as boosters in place of solids. But, there is no foreseeable requirement.

India wouldn't go for a space station on its own? Its not sustainable. ISRO would prefer to take part in an international effort where its role could be to launch resupply vessel, provide equipment etc.
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 baldusi

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Re: ISRO Unified Launch Vehicle (ULV)
« Reply #13 on: 08/19/2013 04:52 PM »
What real requirement for 30tons to LEO exist, really?
I still don't like this approach. I think that having 4 different solids designs is a waste of design effort. Than and I seriously doubt they can do this with a single core. They will end up with something like the Delta IV before the RS-68A. Now, if they use S85 or so solid, with 0, 2, 4 and 6. They could very well cover nearly the same  spectrum of payloads and have a much more simplified logistics. Plus, a lot of launch flexibility. You have a GTO customer that's willing to pay a premium to forward the launch? Just bump the SSO small sat a quarter and use that core.

Well a rocket with 30 tons LEO capability could be used to launch space station modules, resupply missions and heavy probes on trajectories to the outer solar system. If no need existed for such rockets then the Ariane 5 and long March 5 would not have been developed. Personally i don't really like this design either - it's too reliant on solid-fueled strap-ons to provide most of the liftoff thrust but cost must also be taken into account since ISRO's budget is tiny compared to NASA and ESA. Solid fuelled strap-ons are cost effective hence they will lower costs in the long run.
The Ariane 5 and the LM-5 in its biggest iteration hav one driver only: crewed flight. Since ESA decided not to pursue, they went with the smaller Ariane 6. And for China is more of a prestige issue. If they had been allowed to the ISS, it's quite possible they wouldn't have chosen such a big design. In fact, proposals for bigger rockets have been shelved.
In any case, the ULV architecture allows it to grow to 30 tonnes, probably more. In a Heavy configuration with solids (like the proposed improvement for Delta IV Heavy), they could hit that payload. But for a start, they need to make it cheap and flexible. Copy the EELV concept with the little twist that the core can't launch full without boosters. Stick to a single srb design and keep the flexibility on the number of SRBs, not the type. They already went to the Ariane 5, Atlas V concept of VIB with MLP and clean pad. Thus, this approach would give them the needed flexibility at a minimum cost.

Offline johnxx9

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Re: ISRO Unified Launch Vehicle (ULV)
« Reply #14 on: 12/01/2013 03:04 PM »
ULV configurations (ULVs long term goal is to replace PSLV, GSLV & LVM MK3 with a LV having common core stages (semi-cryo stage (SC-160) & cryo stage (C25)) and solid boosters with variable fuel loading.

One more interesting configuration could be the use of 2 semi cryo boosters. This will be the real heavy lifting option.

Offline johnxx9

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Re: ISRO Unified Launch Vehicle (ULV)
« Reply #15 on: 08/05/2014 03:52 PM »
From the annual report,

Quote
The semi-cryogenic Project envisages the design and development of a 2000 kN semi-cryogenic engine for a future heavy-lift Unified Launch Vehicle (ULV) and Reusable Launch Vehicle (RLV). The semi-cryogenic engine uses a combination of Liquid Oxygen (LOX) and ISROSENE (propellant-grade kerosene), which are eco-friendly and cost-effective propellants.
"

for "a" or "a family"?

Offline antriksh

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Re: ISRO Unified Launch Vehicle (ULV)
« Reply #16 on: 08/06/2014 02:10 AM »
From the annual report,

Quote
The semi-cryogenic Project envisages the design and development of a 2000 kN semi-cryogenic engine for a future heavy-lift Unified Launch Vehicle (ULV) and Reusable Launch Vehicle (RLV). The semi-cryogenic engine uses a combination of Liquid Oxygen (LOX) and ISROSENE (propellant-grade kerosene), which are eco-friendly and cost-effective propellants.
"

for "a" or "a family"?

A vehicle in the sense that the core and upper stages will be the same and only solid booster configuration will vary based on the mission requirement.
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: ISRO Unified Launch Vehicle (ULV)
« Reply #17 on: 10/02/2014 08:55 AM »
Antriksh:

From the diagram it appears that the CLC (common liquid core) will have a diameter of 4m ie same as the L110 and C25 stages of Mk III. Is this and propellant loading of 160 tons confirmed information?


Offline antriksh

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Re: ISRO Unified Launch Vehicle (ULV)
« Reply #18 on: 10/02/2014 03:06 PM »
Antriksh:

From the diagram it appears that the CLC (common liquid core) will have a diameter of 4m ie same as the L110 and C25 stages of Mk III. Is this and propellant loading of 160 tons confirmed information?

Yes same diamter as L110 with more propellant because SC160 would be ground lit.
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: ISRO Unified Launch Vehicle (ULV)
« Reply #19 on: 10/02/2014 06:59 PM »
Antriksh:

From the diagram it appears that the CLC (common liquid core) will have a diameter of 4m ie same as the L110 and C25 stages of Mk III. Is this and propellant loading of 160 tons confirmed information?

Yes same diamter as L110 with more propellant because SC160 would be ground lit.

That would mean a much longer stage than the L110.  The length of the core will be around 25-30m.   

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