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#280
by
sanman
on 02 Nov, 2014 03:21
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Unless ISRO gets a new chairman with involvement in launch vehicle development like G. Madhavan Nair and strong proclivity towards pushing forward vigorously the launch vehicle projects, ISRO will not be able to reduce gap with Chinese and Japanese Space Programme
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Dr S Kiran Kumar will be the next ISRO chief, I read somewhere. Well, each project has its own chief too, and isn't purely dependent upon the attentions of the ISRO chief. Maybe it's too many chiefs, not enough Indians.
If they expanded the technical teams more, then they could achieve more progress at a faster pace. You remember for the Mangalyaan launch, they had people seriously sacrificing sleep around that launch window period. It was putting them under a lot of strain, but they made the launch window.
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#281
by
vyoma
on 02 Nov, 2014 04:46
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Unless ISRO gets a new chairman with involvement in launch vehicle development like G. Madhavan Nair and strong proclivity towards pushing forward vigorously the launch vehicle projects, ISRO will not be able to reduce gap with Chinese and Japanese Space Programme
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Dr S Kiran Kumar will be the next ISRO chief, I read somewhere. Well, each project has its own chief too, and isn't purely dependent upon the attentions of the ISRO chief. Maybe it's too many chiefs, not enough Indians.
If they expanded the technical teams more, then they could achieve more progress at a faster pace. You remember for the Mangalyaan launch, they had people seriously sacrificing sleep around that launch window period. It was putting them under a lot of strain, but they made the launch window.
I guess, you meant 'engineers'
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#282
by
Moe Grills
on 06 Nov, 2014 18:38
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Is this the type of booster that will send India's first manned spacecraft into LEO?
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#283
by
JasonAW3
on 06 Nov, 2014 20:21
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You know? I'm betting there's a lot of people at ULA who are wishing that they'd developed a reusable launch system by now!
I'm betting that they're going to be losing a lot of international launch contracts! And with India developing their own launcher...
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#284
by
Lars-J
on 06 Nov, 2014 22:41
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You know? I'm betting there's a lot of people at ULA who are wishing that they'd developed a reusable launch system by now!
I'm betting that they're going to be losing a lot of international launch contracts! And with India developing their own launcher...
I don't know, I'm still rather skeptical of this new GSLV version (which really has little if any in common with previous GSLV). I look forward to seeing it launch, but it seems like an awkwardly overbuilt design with a surprisingly small payload capacity. (Similar or less performance compared to F9, with a lot more parts)
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#285
by
antriksh
on 07 Nov, 2014 04:39
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You know? I'm betting there's a lot of people at ULA who are wishing that they'd developed a reusable launch system by now!
I'm betting that they're going to be losing a lot of international launch contracts! And with India developing their own launcher...
I don't know, I'm still rather skeptical of this new GSLV version (which really has little if any in common with previous GSLV). I look forward to seeing it launch, but it seems like an awkwardly overbuilt design with a surprisingly small payload capacity. (Similar or less performance compared to F9, with a lot more parts)
F9 has a more complex design with its 9 engines in the first stage.
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#286
by
abhishek
on 07 Nov, 2014 06:12
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I don't know, I'm still rather skeptical of this new GSLV version (which really has little if any in common with previous GSLV). I look forward to seeing it launch, but it seems like an awkwardly overbuilt design with a surprisingly small payload capacity. (Similar or less performance compared to F9, with a lot more parts)
It has a lower payload capacity because of it's core liquid stage which has a thrust of 1400 KN.It will be replaced by a semi cryogenic engine with a thrust of 2000 KN in the near future,thus enabling the LV to carry a payload of 6000 kgs.
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#287
by
sanman
on 07 Nov, 2014 06:42
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It has a lower payload capacity because of it's core liquid stage which has a thrust of 1400 KN.It will be replaced by a semi cryogenic engine with a thrust of 2000 KN in the near future,thus enabling the LV to carry a payload of 6000 kgs.
Will that newer version of the vehicle with the 2000 KN semi-cryo engine have a different name designation?
If so, then what?
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#288
by
vineethgk
on 07 Nov, 2014 12:20
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It has a lower payload capacity because of it's core liquid stage which has a thrust of 1400 KN.It will be replaced by a semi cryogenic engine with a thrust of 2000 KN in the near future,thus enabling the LV to carry a payload of 6000 kgs.
Will that newer version of the vehicle with the 2000 KN semi-cryo engine have a different name designation?
If so, then what?
Since such a configuration maps to that of the proposed ULV, my take would be to name it as a ULV variant (maybe ULV-4). They could have varying number of smaller solids for realizing the other versions as described as
antariksh's post
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#289
by
Lars-J
on 08 Nov, 2014 22:00
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You know? I'm betting there's a lot of people at ULA who are wishing that they'd developed a reusable launch system by now!
I'm betting that they're going to be losing a lot of international launch contracts! And with India developing their own launcher...
I don't know, I'm still rather skeptical of this new GSLV version (which really has little if any in common with previous GSLV). I look forward to seeing it launch, but it seems like an awkwardly overbuilt design with a surprisingly small payload capacity. (Similar or less performance compared to F9, with a lot more parts)
F9 has a more complex design with its 9 engines in the first stage.
If engine count is your only metric, sure. But fewer stages, same propellants, and one engine family is another way to measure complexity.
I have no doubt that India could produce a launch vehicle that could conquer the commercial market. But like many government aerospace programs, they seem more interested in *developing* technology instead of *operating or using* it. Why does this launcher need three different stages all using very different engines and propellants? And many of them different from previous GLSV/PSLV vehicles. Why? The Indian space program now has experience with solids, storable/hypergolic, semi-cryo, and cryogenic propulsion. When are they going to actually pick one or two technologies and run with them?
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#290
by
sanman
on 09 Nov, 2014 19:05
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When are they going to actually pick one or two technologies and run with them?
That seems more likely to happen with the ULV family, which will be run on semi-cryo (RP-1) lower stages and cryo (LH2) upper stage.
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#291
by
abhishek
on 10 Nov, 2014 01:28
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Why does this launcher need three different stages all using very different engines and propellants? And many of them different from previous GLSV/PSLV vehicles. Why?
This Mid-heavy launcher is a new kind of rocket and is not a successor of any other Indian rockets.
Untill India develops powerful RP-1/LOX and LH2/LOX engines,it will be forced to use N2O4 / UDMH and MMH/MON based liquid engines as well as SRB's
As said earlier in this post,the N2O4/UDTM based liquid core stage of this rocket will be replaced by a RP-1/LOX rocket which is under development.
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#292
by
antriksh
on 10 Nov, 2014 02:09
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Why does this launcher need three different stages all using very different engines and propellants? .......
Because it was designed to optimize f(cost, efficiency) given technology available to ISRO at that time (Solids, hypergols, under developed cryo). ISRO does not have mature semy-cryo tech and has only recently matured its cryo tech. LVM3 will be the highest efficiency launcher of ISRO with its first and second stages derived from PSLV/GSLV tech. Its design is different than PSLV/GSLV to reduce complexity and improve efficiency while keeping the vehicle cost close to current GSLV.
I feel in the futre when semi-cryo and high thrust cryo are ready, ISRO will have
1) expendable LVs as a combination of Solids, semicryo and cryo to have a balance between cost, complexity and efficiency.
2) resuable LVs as a combination of semi-cryo and cryo to achieve highest efficiency as re-usability will take care of the cost.
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#293
by
antriksh
on 10 Nov, 2014 03:28
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Is this the type of booster that will send India's first manned spacecraft into LEO?
Yes.
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#294
by
johnxx9
on 11 Nov, 2014 11:27
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Experimental flight of GSLV Mark 3 in December: ISRO chiefIndia will conduct an experimental test of its Geosynchronous Satellite Launch Vehicle
(GSLV) Mark 3 in mid-December, ISRO
Chief K
Radhakrishnan said Tuesday.
The satellite launch vehicle will have
a capacity of carrying approximately four tonnes of load, and will be able to
launch heavier satellites in space, Radhakrishnan said giving the 50th
Foundation Day Address at the Institute for Defence Studies and Analyses
(IDSA).
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#295
by
TrevorMonty
on 12 Nov, 2014 03:06
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If they configure this LV with 2x SEC200 lox/ rp1 engines plus Ce25 upper stage (similar specs to Centuar) India will have Atlas V equivalent LV.
But at a lot cheaper price than ULA.
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#296
by
input~2
on 13 Nov, 2014 07:23
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#297
by
antriksh
on 15 Nov, 2014 09:14
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#298
by
vyoma
on 16 Nov, 2014 12:33
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Any idea about drop test of Crew Module? Did it take place? I guess one or two drops tests from helicopter were planned for Crew Module before its flight aboard GSLV Mk-3 X1.
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#299
by
antriksh
on 24 Nov, 2014 23:07
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