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#300
by
vineethgk
on 25 Nov, 2014 04:24
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http://www.thehindu.com/sci-tech/science/all-set-to-put-unmanned-crew-module-into-orbit/article6631187.ece
“We are ready. Everything is pucca,” said M.C. Dathan, Director, Vikram Sarabhai Space Centre
Hmmm.. That appears to be a statement of confidence. Maybe their on-pad tests have gone well so far and we might see a launch next month itself after all.
There is a glaring instance of misreporting as well, where in one place it states that the rocket will put the crew module to
orbit, whereas in another place it states correctly that it will be a sub-orbital flight.
@antriksh, just FYI.. there is a slight problem with the link in your post. Seems like the url and the label of the link got mixed up a bit.
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#301
by
vyoma
on 25 Nov, 2014 04:36
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From The Hindu article posted above:
The 3.65-tonne module will get de-mated from the topmost cryogenic stage at an altitude of 125 km and return to the earth. At an altitude of 15 km, there will be an “aerial ballet,” featuring three huge parachutes which will open up one after the other to slow down the module’s descent. The module is expected to splash down in the sea near the Andaman archipelago and will be recovered by the Indian Coast Guard and ISRO personnel. The entire flight from the lift-off to the splash-down will last about 20 minutes.
Two gigantic strap-on motors, each of which will use 200 tonnes of solid propellants, have been strapped around the core stage in the second launch pad. The core stage will use 110 tonnes of liquid propellants. Above the core stage is the cryogenic stage. The module will be “encapsulated” with the cryogenic stage on November 26, said Mr. Dathan.
Looks like GSLV Mk3 X1 is getting ready on SLP. Excited
Hope Doordarshan covers crew module splashdown as well
Anyone travelling to SDSC SHAR for this launch?
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#302
by
Galactic Penguin SST
on 29 Nov, 2014 13:07
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Still no concrete target launch date for this at such a late stage? You guys are risking to lose out any publicity to Orion-EFT1, rockets with legs from some-company-which-must-not-be-named, Angara-5 Heavy and maybe Hayabusa 2 if no news is coming through soon.....
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#303
by
abhishek
on 29 Nov, 2014 17:24
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re-posting from Human spaceflight thread :-
The crew module will be launched as a payload on the GSLV-Mark III, which will blast off for the first time.
The crew module will not carry any astronauts on its first test flight, which is scheduled between December 15 and 20. After rising more than a hundred kilometres into space, the crew module would be brought back to Earth, and its reentry trajectory will be studied. The capsule will then be recovered using Indian coast Guard ships from close to the Andaman Nicobar islands. A simulated recovery was carried out recently in the region.
While the rocket would cost Rs. 140 crore, the crew module would cost Rs. 15 crore, said MYS Prasad, Director of the Satish Dhawan Space Centre.
http://www.ndtv.com/article/india/india-to-push-next-space-frontier-with-launch-of-crew-module-in-mid-december-627603
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#304
by
abhishek
on 29 Nov, 2014 17:29
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Still no concrete target launch date for this at such a late stage? You guys are risking to lose out any publicity to Orion-EFT1, rockets with legs from some-company-which-must-not-be-named, Angara-5 Heavy and maybe Hayabusa 2 if no news is coming through soon.....
Unfortunately this kind of event would generate negative publicity,specially in international media for reasons known to all and therefore the more silence we keep,the better it is
Anyways according to the program director the launch will happen anywhere between 15th to 20th and as shown in the pic,the CM is undergoing integration with the rocket.
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#305
by
abhishek
on 30 Nov, 2014 02:19
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#306
by
vineethgk
on 30 Nov, 2014 03:06
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Unfortunately this kind of event would generate negative publicity,specially in international media for reasons known to all and therefore the more silence we keep,the better it is
Very true abhishek. Especially considering this mission carries a crew module boilerplate for future manned spaceflight, ISRO would do well to keep publicity within limits. Else, there's going to be a lot of bashing that the agency is wasting its funds over unnecessary, expensive projects.
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#307
by
kanaka
on 30 Nov, 2014 03:41
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Unfortunately this kind of event would generate negative publicity,specially in international media for reasons known to all and therefore the more silence we keep,the better it is
Very true abhishek. Especially considering this mission carries a crew module boilerplate for future manned spaceflight, ISRO would do well to keep publicity within limits. Else, there's going to be a lot of bashing that the agency is wasting its funds over unnecessary, expensive projects.
Isro should stop publishing the dates in first place. It should publish the target date only when they are confident of their schedule. Or it should work more hard to attain the published dates. Tentative dates should not be encouraged. Scientist should be well aware that they are being followed.
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#308
by
abhishek
on 30 Nov, 2014 04:57
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Very true abhishek. Especially considering this mission carries a crew module boilerplate for future manned spaceflight, ISRO would do well to keep publicity within limits. Else, there's going to be a lot of bashing that the agency is wasting its funds over unnecessary, expensive projects.
They will bash us for anything,even for gazing at stars in the night.In view of the fact that Indian technological advancement does not go too well with western media ,ISRO should rather keep quite without creating much
of a melodrama over it's projects.
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#309
by
input~2
on 30 Nov, 2014 08:46
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#310
by
input~2
on 30 Nov, 2014 18:34
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#311
by
cave_dweller
on 30 Nov, 2014 19:04
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Very true abhishek. Especially considering this mission carries a crew module boilerplate for future manned spaceflight, ISRO would do well to keep publicity within limits. Else, there's going to be a lot of bashing that the agency is wasting its funds over unnecessary, expensive projects.
They will bash us for anything,even for gazing at stars in the night.In view of the fact that Indian technological advancement does not go too well with western media ,ISRO should rather keep quite without creating much
of a melodrama over it's projects.
I think primarily it appears unprofessional and poorly planned. The unintended effect being loss of confidence.
ISRO has been delaying this mission for a while. Perhaps it would have helped to share the challenges and keep the rest of us abreast of the changes and so forth.
This black-box, date-shifting approach isn't good for science nor for inspiring public confidence to secure further funding.
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#312
by
sanman
on 30 Nov, 2014 19:43
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Still no concrete target launch date for this at such a late stage? You guys are risking to lose out any publicity to Orion-EFT1, rockets with legs from some-company-which-must-not-be-named, Angara-5 Heavy and maybe Hayabusa 2 if no news is coming through soon.....
Unfortunately this kind of event would generate negative publicity,specially in international media for reasons known to all and therefore the more silence we keep,the better it is
Anyways according to the program director the launch will happen anywhere between 15th to 20th and as shown in the pic,the CM is undergoing integration with the rocket.
I disagree - I think ISRO has done a great job with public outreach through social media, which has provided a direct gauge of public support for its work. That's more than enough to offset any foreign criticism.
I wish that ISRO had borrowed another chapter from NASA and its Orion ETF-1 experimental test flight, by letting people submit their names through the internet, to have them recorded on a chip and flown on the GSLV-Mk3's LVM3-X1 experimental test flight. That would have been another cheap and useful way for ISRO to engage the public, by helping fulfill peoples' aspirations of going to the heavens.
Anyway, here's an article on the parachute system that will be used on this test flight:
http://www.newindianexpress.com/states/tamil_nadu/2014/11/30/India%E2%80%99s-Manned-Mission-Tied-to-its-Biggest-Parachute-Yet/article2547970.ece
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#313
by
antriksh
on 01 Dec, 2014 14:46
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L110 stage engine nozzles will be covered initially.
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#314
by
abhishek
on 03 Dec, 2014 07:44
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#315
by
sanman
on 03 Dec, 2014 20:38
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Nah, that's just one site - not even a major news portal - which said that, so I wouldn't put much credence in that statement.
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#316
by
antriksh
on 04 Dec, 2014 01:54
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GSLV Mark III faces its first experimental flightReducing the total number of propulsion modules that make up the GSLV Mark III was seen as crucial to increasing the rocket’s reliability and reducing launch costs, according to ISRO experts this correspondent spoke to. The GSLV Mark III has just four propulsion modules while its predecessor, the GSLV, has seven.
The rocket will, however, give the crew module a velocity of 5.3. km/second when the latter separates at a height of about 125 km. The capsule will then descend and splashdown in the Bay of Bengal, about 600 km from Port Blair in the Andaman Islands.
a totally new configuration, so if there are issues with respect to the configuration and we need to take care of that, it is better to take care of [them] early.” It was not necessary to wait till the cryogenic stage was qualified.
The GSLV Mark III is more sensitive than the Polar Satellite Launch Vehicle (PSLV) and the current GSLV to disturbances that might occur as it accelerates through the dense atmosphere. The ability of the rocket’s control systems to effectively handle such perturbations without violating the vehicle's structural capabilities will be tested during the experimental flight
The closely matched thrust levels required from the two S200 boosters was achieved by carefully controlling both the quality of the raw materials used and their subsequent processing. Another major achievement is that the S200’s large nozzle has been equipped with a ‘flex seal.’ The nozzle can therefore be swivelled when the rocket’s orientation needs correction.
The GSLV Mark III’s two S200 boosters fire at lift off, together generating a thrust of over 800 tonnes. The sheer volume of sound produced at lift off could potentially damage the rocket and the spacecraft. A sound suppression system has therefore been installed on the launch pad that will be spray about 20 tonnes of water per second to reduce noise levels during lift off.
In flight, as the thrust from the S200 boosters begins to tail off, the decline in acceleration is sensed by the rocket’s onboard sensors and the twin Vikas engines on the ‘L110’ liquid propellant core stage are then ignited. Before the S200s separate and fall away from the rocket, the solid boosters as well as the Vikas engines operate together for a short period of time.
The thermal environment at the base of the L110 stage will be monitored during the experimental mission. The transition of control over the vehicle’s orientation from the S200s to the L110 will also be closely watched.
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#317
by
antriksh
on 05 Dec, 2014 01:42
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Crew module will be actively contorlled
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#318
by
sanman
on 05 Dec, 2014 02:06
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Actively controlled in what way? You mean telecommanded from the ground? For doing what? During what portion of the flight trajectory?
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#319
by
antriksh
on 05 Dec, 2014 02:35
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Actively controlled in what way? You mean telecommanded from the ground? For doing what? During what portion of the flight trajectory?
My guess actively controlling the flight profile by onboard computers using thrusters. Just after the separation from the CUS, we can see a flight phase where active control is applied.
Hope Doordarshan covers crew module splashdown as well 
Anyone travelling to SDSC SHAR for this launch?
