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Updated: August 18, 2013 01:30 IST

GSLV-D5 in shape for tomorrow’s launch

  • T. S. Subramanian
Comment (35)   ·   print   ·   T  T  

It will put ISRO’s communication satellite GSAT-14 into orbit

Preparations are gathering strength for the lift-off of India’s Geo-synchronous Satellite Launch Vehicle (GSLV-D5) from Sriharikota at 4.50 p.m. on Monday. The 29-hour countdown begins at 11.50 a.m. on Sunday.

The GSLV-D5 will put the Indian Space Research Organisation’s (ISRO) advanced communication satellite called GSAT-14 in orbit. The vehicle is on the launch pad and it has been married with the satellite weighing 1,982 kg. The rocket weighs 414 tonnes and is 49 metres tall.

Indigenous cryogenic engine

The mission’s importance lies in the three-stage GSLV-D5 using an indigenous cryogenic engine as the third upper stage. This is the second time that a GSLV is using an indigenous cryogenic engine developed by ISRO’s Liquid Propulsion Systems Centre (LPSC) situated at Mahendragiri, near Nagercoil in Tamil Nadu. The first flight to use an India-made cryogenic stage failed in April 2010. This is the eighth GSLV flight. Of the earlier seven GSLV missions, six used cryogenic engines from Russia.

ISRO Chairman K. Radhakrishnan told The Hindu on Saturday that the Mission Readiness Review (MRR) team and the Launch Authorisation Board (LAB) met on Friday and cleared the vehicle for the launch. “Soon, we will be filling the liquid propellants and the oxidiser for the second liquid stage and the four strap-on liquid motors,” he said.

‘Our confidence-level is good’

Asked about the confidence level among the ISRO rocket engineers, Dr. Radhakrishnan replied, “We have done our best.”

S. Ramakrishnan, Director, Vikram Sarabhai Space Centre, Thiruvananthapuram, declared, “We are ready. We will be starting the countdown at T minus 29 hours.” The pumping of liquid propellants into the second stage and for the four strap-on booster engines would begin at the start of the countdown. The cryogenic propellants, that is, liquid oxygen and liquid hydrogen, would start flowing into the cryogenic stage eight hours before the lift-off, he said. “Our confidence-level is good,” added Mr. Ramakrishnan.

Engine redesigned

For this mission, ISRO has re-designed the cryogenic engine’s Fuel Booster Turbo-Pump; subjected the engine to a high altitude test, simulating the vacuum there; re-designed the way the connectors are mounted in the cryogenic stage; and done wind-tunnel tests on the GSLV model.

The GSAT-14 will be used for telecasting and telecommunication purposes. Its mission life is 12 years.

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This is way cool ...

To ISRO —> have a good day on Monday guys!

from:  Sachi Mohanty
Posted on: Aug 19, 2013 at 14:54 IST

Jaihind........ Good luck.

from:  Anil Sharma
Posted on: Aug 19, 2013 at 10:00 IST

Another step forward

from:  Arup Das
Posted on: Aug 19, 2013 at 07:47 IST

Best of luck :)

from:  Mahesh
Posted on: Aug 19, 2013 at 06:48 IST

It is a success.

from:  P.S.Murthy
Posted on: Aug 19, 2013 at 06:24 IST

Congratulations to the scientists and particularly ISRO leadership who
pulled this off despite the culture of rampant corruption and nepotism
in our society.

from:  Rahul Garg
Posted on: Aug 19, 2013 at 03:44 IST

maybe i am being cynical but with only couple of times of few seconds of
testing at laboratory conditions merits the mission far from being a
probable's admirable what our scientists can do with what
limited funding we have.dealing with corruption would certainly be a
step in increasing the funding towards our national goals.

from:  ashish sharma
Posted on: Aug 19, 2013 at 00:17 IST

All the best ISRO. The prayers of all Indians are with you for the grand
success of the launch. Good luck and God speed.

from:  roy
Posted on: Aug 18, 2013 at 23:45 IST

Good luck to ISRO on this very important launch! Not to put pressure,
but in the backdrop of recent setbacks for the nation, this launch after
two successive failures assumes greater significance. I personally put
the chances as 50/50 with the hope and wish that it would succeed this
time. Go ISRO!

from:  Suvojit Dutta
Posted on: Aug 18, 2013 at 22:54 IST

To put things in proper perspective, this GSLV variant is never likely to be used for operational launches. GSLV MK-I/II was designed for 2ton class INSAT/GSAT satellites in the 1990s. But country's explosive growth in the last decade fuelled an upsurge in demand for satellite transponders. Now ISRO's recent communications satellites weigh 4tons -- double the GSLV's designed capacity.

But lack of indigenous capability to launch 4ton class satellites has constrained ISRO, as it has to rely on expensive foreign launchers (such as Ariane). Consequently, ISRO has been able to meet only 50% of the projected transponder requirements. So GSLV-MK3 (aka LVM3), with designed payload capacity of 4tons is the key program for the future.

However, these points should not dilute the importance of this particular launch. This would be a crucial validation of indigenous cryogenic engine and a much needed confidence booster before LVM3's first launch scheduled for early next year.

from:  KNS Prasad
Posted on: Aug 18, 2013 at 22:42 IST

Last GSLV was a failure which still pains me and my family. I pray
almighty to be with the team of Indian Scientists in the project and
shower all success on them. It is a moment of Nation's pride to witness
such event in live telecast. I take this opportunity to appeal to the
scores of Indians to watch the launch programme live on DD tomorrow,
because it is something more than a cricket match or audio release

from:  K.A.R.Reddy
Posted on: Aug 18, 2013 at 22:30 IST

With this launch ending in success, India will join the elite club of
countries in the liquid propulsion technology. Also it would be
forerunner for the Chandrayaan 2 Moon mission of ISRO. Tommorrows launch
will be grand success, rewriting the history, what happened in April

Posted on: Aug 18, 2013 at 21:54 IST

May God fullfill our aspirations to join the elite club of nations and
the dreams of millions of Indians into a reliality. Jai Hind

from:  Radhakrishnan.s
Posted on: Aug 18, 2013 at 20:48 IST

If this launch goes successful, then it may possibly bring business of sending cargo capsule of 5000 Kg or so to ISS.

from:  kharat
Posted on: Aug 18, 2013 at 20:09 IST

Eagerly waiting to see the launch! It will be a success.

from:  Sathish Kumar Karunavel
Posted on: Aug 18, 2013 at 19:53 IST

I have been eagerly waiting to see this development. I trust that our scientists and engineers have done their best to get this going. Wish ISRO all the best for the launch.


from:  Niranjan
Posted on: Aug 18, 2013 at 19:20 IST

You will succeed and there is huge market for such launches to be grabbed it isro.<

from:  devash roy
Posted on: Aug 18, 2013 at 19:19 IST

Hope it would be a success. Other wise it would be a hat-trick failure !!

from:  joshy
Posted on: Aug 18, 2013 at 18:38 IST

I just hope this launch is a grand success as it will propel India into a higher league. Most of our neighbours must be eagerly waiting for our failure. This test will silence them and the burning will continue. All the best to our esteemed scientist and hoping for the best. As for me the countdown has already begun. My body is already shaking.

from:  D Fernandes
Posted on: Aug 18, 2013 at 18:16 IST

With the God's Grace it will be a success this time and India will reach a highest level. We have to show the strength of our country to others.

from:  George
Posted on: Aug 18, 2013 at 18:14 IST

Goodluck to GLSV D5!!. Should be a sure shot success story from

from:  Balaji Sankarshanan
Posted on: Aug 18, 2013 at 17:53 IST

I am sure it is going to be a success. I pray the Lord for the trouble free launch.

from:  Dr K Natarajan
Posted on: Aug 18, 2013 at 17:13 IST

The launch will be successful.We believe in our scientists and that they have done
their best.

from:  isahbiazhar
Posted on: Aug 18, 2013 at 16:20 IST

Kudos to ISRO ...Entire nation is behind you doubt , it will be a sure success !

We are all proud of you ISRO !

from:  Balu
Posted on: Aug 18, 2013 at 15:51 IST

All the best. I am proud of the scientist working for this great
mission of national importance. It will be a great achievement. There is
a long way to go too.

from:  Narasimhan
Posted on: Aug 18, 2013 at 14:14 IST

My best wishes for every person who contribute their hard labour in making of gslv.It's new revolution in science &technology of devloping country such like a India.

from:  Puja
Posted on: Aug 18, 2013 at 14:06 IST

All the best ISRO-ites and kudos to your relentless pursuit of

from:  Keerthana S
Posted on: Aug 18, 2013 at 13:48 IST

Wish you all the best ISRO. I am sure GSLV will be launched successfully this time.

from:  Ramesh
Posted on: Aug 18, 2013 at 13:01 IST

This will be the threshold of a new era in ISRO's history... good luck

from:  John
Posted on: Aug 18, 2013 at 12:47 IST

This time we will do it. I am proud to be an Indian.

from:  shejuguru
Posted on: Aug 18, 2013 at 11:18 IST

A most crucial launch for ISRO and India, here's wishing good luck to
the ISRO team.

I'll be watching each minute of the 17+ minute flight duration, and hope
it goes completely glitch-free.

from:  Anurag
Posted on: Aug 18, 2013 at 11:16 IST

This will write a new chapter in ISRO history with golden words if
succeeded and i hope this time we will succeed. The whole nation will
cheer your success.......just go for it.Hurray..........

from:  Binesh kumar
Posted on: Aug 18, 2013 at 10:26 IST

Good wishes to ISRO for launch. Lord Ganesha's blessings will be with
isro team for successful launch. Nirvighna success is awaiting.

from:  suresh sharma
Posted on: Aug 18, 2013 at 09:02 IST

Good luck fellas! I hope the indigenous cryogenic engine works just fine!

from:  Hemant
Posted on: Aug 18, 2013 at 06:07 IST

Definitely you make us proud. We are very confident on your abilities. All the best.

from:  Sri
Posted on: Aug 18, 2013 at 04:42 IST
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