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#580
by
northenarc
on 18 Dec, 2014 03:57
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Fantastic job India, couldn't ask for a better first flight, that is certainly a unique rocket. And great coverage by everyone here.
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#581
by
vyoma
on 18 Dec, 2014 03:57
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Working on ground receiver system development for IRNSS. Happy with accuracy, signals being received as far as 5000km from the original locations. Will have fully operational IRNSS by 2015. Development for front-end chips for RF and digital systems ongoing.
Astrosat is getting ready. Expected launch in coming year (2015?).
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#582
by
vyoma
on 18 Dec, 2014 03:59
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"No compromise on quality and reliability" - Deputy director, VSSC, responsible for system reliability.
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#583
by
vyoma
on 18 Dec, 2014 04:01
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"Thanks to Indian government and PM for support and encouragement. We will be back by first week of March 2015 for launch of PSLV with 4th IRNSS satellite onboard"
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#584
by
vyoma
on 18 Dec, 2014 04:03
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Congratulations to ISRO. Hoping to see some pics or video of Crew Module recovery.
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#585
by
Steven Pietrobon
on 18 Dec, 2014 04:03
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Looks like the S200s burned a little slow, resulting in the altitude being less than expected at burnout.
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#586
by
cro-magnon gramps
on 18 Dec, 2014 04:05
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Well done ISRO, looking forward to when Indian Astronauts orbit in Indian space craft...
and Thank you Steven and Vyoma for the coverage.. as usual, NSF coverage was the best...
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#587
by
vyoma
on 18 Dec, 2014 04:11
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Looks like the S200s burned a little slow, resulting in the altitude being less than expected at burnout.
Can it be corrected or compensated on-the-fly by next stage? If not, what would be corrective steps to be taken in next flights?
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#588
by
abhishek
on 18 Dec, 2014 04:14
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Well done ISRO, looking forward to when Indian Astronauts orbit in Indian space craft...
and Thank you Steven and Vyoma for the coverage.. as usual, NSF coverage was the best...
Much better than the TV coverage...
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#589
by
hop
on 18 Dec, 2014 04:21
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Can it be corrected or compensated on-the-fly by next stage? If not, what would be corrective steps to be taken in next flights?
The red plot was the nominal path, but without knowing what the error bars were, it's premature to assume there is an actual problem.
Congratulations to ISRO on a very impressive test flight either way
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#590
by
vyoma
on 18 Dec, 2014 04:25
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#591
by
vyoma
on 18 Dec, 2014 04:29
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#592
by
chota
on 18 Dec, 2014 04:32
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Photo Credit: The Hindu (K. Ravi Kumar )
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#593
by
edkyle99
on 18 Dec, 2014 04:32
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Can it be corrected or compensated on-the-fly by next stage? If not, what would be corrective steps to be taken in next flights?
The red plot was the nominal path, but without knowing what the error bars were, it's premature to assume there is an actual problem.
Looks like nominal deviation to me. A landmark success for India, an inaugural success denied Europe on its initial Ariane 5 attempts. This was the second of three landmark launches in the world late in the year or early next year. First came EFT-1. Next is today's LMV3-X. Now we await Angara A5.
- Ed Kyle
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#594
by
Ohsin
on 18 Dec, 2014 04:41
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M. Chandradathan saying Govt. has done its work as far as funding is concerned was good to hear
Did he say he expects minimal two launches every year !
Patiently awaiting images of recovery of crew module and video of s200 separation(S Somnath mentioned it was a beauty to watch)!
Thank you ISRO for new launch vehicle
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#595
by
Steven Pietrobon
on 18 Dec, 2014 04:45
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It looks very stumpy if you are watching on You Tube because it is shown in the wrong aspect ratio of 16:9 rather than 4:3
Only Steven is showing it correctly. How did you force it to 4:3 Steven?
I used IrfanView to change the width to 960 pixels, for a 720 pixel high image.
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#596
by
Steven Pietrobon
on 18 Dec, 2014 05:00
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Launch replay in correct aspect ratio.
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#597
by
atnanda
on 18 Dec, 2014 06:27
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#598
by
cave_dweller
on 18 Dec, 2014 06:31
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Looks like the S200s burned a little slow, resulting in the altitude being less than expected at burnout.
Can it be corrected or compensated on-the-fly by next stage? If not, what would be corrective steps to be taken in next flights?
I think this is the first time ISRO is testing a large capacity SRB such as this.
Some immediate thoughts are to improve the exhaust nozzles design for more thrust. And/Or improve the burn rate of HPTB solid propellant. Or improve the thrust in the 2nd second. But it is probably easier and prudent to address it in the SRBs.
In any case, it appears the "deviations" are within tolerable limits and as others stated are nominal. I am sure ISRO will address if it at all needs to be.
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#599
by
vyoma
on 18 Dec, 2014 07:38
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http://isro.org/pressrelease/scripts/pressreleasein.aspx?Dec18_2014 December 18, 2014
First Experimental Flight of India's Next Generation Launch Vehicle GSLV Mk-III Successful
The first experimental flight (GSLV Mk-III X/CARE) of India's next generation launch vehicle GSLV Mk-III was successfully conducted today (December 18, 2014) morning from Satish Dhawan Space Centre SHAR, Sriharikota. Also known as LVM3-X/CARE, this suborbital experimental mission was intended to test the vehicle performance during the critical atmospheric phase of its flight and thus carried a passive (non-functional) cryogenic upper stage.
The mission began with the launch of GSLV Mk-III at 9:30 am IST from the Second Launch Pad as scheduled and about five and a half minutes later, carried its payload - the 3775 kg Crew Module Atmospheric Re-entry Experiment (CARE) - to the intended height of 126 km. Following this, CARE separated from the upper stage of GSLV Mk-III and re-entered the atmosphere and safely landed over Bay of Bengal with the help of its parachutes about 20 minutes 43 seconds after lift-off.
Two massive S-200 solid strap-on boosters, each carrying 207 tons of solid propellants, ignited at vehicle lift-off and after functioning normally, separated 153.5 seconds later. L110 liquid stage ignited 120 seconds after lift-off, while S200s were still functioning, and carried forward for the next 204.6 seconds.
CARE separated from the passive C25 cryogenic upper stage of GSLV Mk-III 330.8 seconds after lift-off and began its guided descent for atmospheric re-entry.
After the successful re-entry phase, CARE module's parachutes opened, following which it gently landed over Andaman Sea about 1600 km from Sriharikota, there by successfully concluding the GSLV Mk-III X/CARE mission.
With today's successful GSLV Mk-III X / CARE mission, the vehicle has moved a step closer to its first developmental flight with the functional C25 cryogenic upper stage.
Did he say he expects minimal two launches every year !