Most Powerful PSLV to launch GSAT-12 on July 15

[Invincible INDIAN]

Most Powerful PSLV to launch GSAT-12 on July 15

BANGALORE (PTI): Indian Space Research Organisation is using the most powerful configuration of its rocket PSLV to launch a communication satellite from Sriharikota on July 15 as it braces for the nearly Rs. 200 crore mission.

It’s only for the second time ever that a Polar Satellite Launch Vehicle is being used to loft a communication satellite, the first one being Kalpana-1 in 2002.

Bangalore-headquartered ISRO opted for this step as there is a large unfulfilled and pressing demand for communication transponders.

Communication satellites are launched on board GSLV or ISRO goes in procured launches overseas.

“But we wanted to create (transponder) capacity at the earliest. That’s why we used the PSLV for the purpose (of launching a communication satellite), and achieve whatever is possible...best possible by a PSLV with XL configuration. That’s the most powerful configuration,” ISRO Chairman K. Radhakrishnan told PTI in Bangalore.

The GSAT-12 “fast-track” satellite with a mass of 1410 kg, has 12 Extended C-band transponders. It is slated to be injected into space by PSLV-C17 after the launch from Sriharikota spaceport slated between 16.48 hours and 17.08 hours on July 15.

Similar PSLV, with extended strap-ons, was used for India’s Chandrayaan-1 mission.

On the PSLV-C17/GSAT-12 mission cost, Mr. Radhakrishnan said, “Launch vehicle of PSLV of XL-class will cost about Rs 100-Rs 110 crore, and GSAT-12 will be about Rs 80 crore. The life of the satellite will be about 7-8 years.” Mr. Radhakrishnan said in the beginning of the 11th plan, ISRO had 211 transponders, and the target then set was to take it to almost 500 by March 2012, which is end of the plan period.

But except for 24 transponders added by GSAT-8 which was operationalised recently, ISRO had not been able to enhance these numbers since September 2007.

“During the period, most of our satellites have either completed their normal life or there were premature terminations,” he said. “So, this resulted in the 211 becoming 175 now. There is a lot of unfulfilled demand to be met.” To meet this growing demand, Bangalore-headquartered ISRO is building GSAT-10 with 36 transponders and it would be launched by Arianespace from Kourou in French Guiana during March-April next year.

“We are also building another satellite GSAT-7 that will have a few more transponders,” Mr. Radhakrishnan added.

Most Powerful PSLV to launch GSAT-12 on July 15 - Brahmand.com

 

[garibnawaz]

I just hope the ISRO has done the calculations right this time. GSAT is usualy launched from GSLV but since GSLV is not giving proper results ISRO is playing it with PSLV.

However even if its a success, it wont go to the heights of GSLV orbits and hence life will be short compared to GSLV launch.

GB

 

[Dharmachakra]

I just hope the ISRO has done the calculations right this time. GSAT is usualy launched from GSLV but since GSLV is not giving proper results ISRO is playing it with PSLV.

However even if its a success, it wont go to the heights of GSLV orbits and hence life will be short compared to GSLV launch.

GB

Dont worry mate........ISRO has had its claculations well done..

AFAIK, though not a rocket scientist this is how PSLV-XL config supossed to work with GSAT-12.
PSLV-XL places the sat in an elliptical transfer orbit (Sub-GTO) of 284 km perigee and 21000 km apogee.Then the apogee motor on the sat bumps the sat into a 36000km circular orbit. Even though most of its propulsion life is used to bump the orbit from sub-GTO to pure GTO,it still retains its 7 year orbit life. Which means it still got enough fuel for station keeping missions and incase- orbit manuevers.

If the launcher itself is a direct GTO capable, then you have much heavier one with more transponders and fuel.
It is a simple trade off.... you save on launcher? gotta spend on satellite.....

 

[gulte]

I just hope the ISRO has done the calculations right this time. GSAT is usualy launched from GSLV but since GSLV is not giving proper results ISRO is playing it with PSLV.

However even if its a success, it wont go to the heights of GSLV orbits and hence life will be short compared to GSLV launch.

GB

Hahaha, it reaches the full orbit but with less onboard fuel. That is the reason the life of the satellite is less.

 

[garibnawaz]

Dont worry mate........ISRO has had its claculations well done..

AFAIK, though not a rocket scientist this is how PSLV-XL config supossed to work with GSAT-12.
PSLV-XL places the sat in an elliptical transfer orbit (Sub-GTO) of 284 km perigee and 21000 km apogee.Then the apogee motor on the sat bumps the sat into a 36000km circular orbit. Even though most of its propulsion life is used to bump the orbit from sub-GTO to pure GTO,it still retains its 7 year orbit life. Which means it still got enough fuel for station keeping missions and incase- orbit manuevers.

If the launcher itself is a direct GTO capable, then you have much heavier one with more transponders and fuel.
It is a simple trade off.... you save on launcher? gotta spend on satellite.....

Agreed but then the ISRO is doing this for the first time hence fingers crossed. Not to mention the monsoon on the eastern coast.

Also this ain't a permanant solution. ISRO must get things right on GSLV/GSLV-MarkIII

 

[Dharmachakra]

Agreed but then the ISRO is doing this for the first time hence fingers crossed. Not to mention the monsoon on the eastern coast.

Also this ain't a permanant solution. ISRO must get things right on GSLV/GSLV-MarkIII

That is the decades long problem with rocket science. It drives on probablity theory somehow.... One thinks that he had full control of the launcher untill the second before it blows down into pieces.....When you are integration millions of sub-systems and millions of lines of code,sometimes being unluckky comes into play.......
We cant re-do the failed launches.....In space tech all we can do is eat as much as you can swallow. We aint either soviets or yankees to justify spending billions on space tech alone...The funding constraints and man power constrains do lodge the preceeding launches.
Though not publicly mentioned, ISRO does have a serious manpower crunch.It is not that they had their own institutes to raise man-power suitable for the job, I would say there will be significant changes from 2013 onwards......We get to see increased number of launches and stats in orbit.

One cant stop a guy getting paid 70K/month migrate to IT industry to get paid 120K......Most of the techies moved from ISRO to IT ,only those who are serious about nationalism and space science stuck to ISRO during both highs and downs.

My own opinion is, we cant blame ISRO for any failures.....Actually I should say is, WE SHOULDNT BLAME THEM.You will see as many PhD and MTechs from IIT and IISC in ISRO. Guess what? most of them couldnt even able to afford a fridge untill the 6th pay commission.Why do they have to work for dismissal pay? When they can earn thousands of dollars outside the country for the same job they are doing here?

My buddy an IISc grad couldnt afford to have a freaken TV set in his house untill the 6th pay commn revised the payscales....He got numerous offers from international companies.He turned down all of them and continued working for DRDO in Hyderabad( cant name the research lab unfortunately).
It is a common theory that prevents both DRDO and ISRO from joining hands in public.But both work together in general.If DRDO is so good in missile tech means, we should tank the ones that moved from ISRO under GOI request to build countries defences.

I hail all those working for ISRO and DRDO.
JAI Hind.

 

[WHITESMOKE]

Dont feed the trolls guys.. lets concentrate on relative talk only.

 

[RoYaL~GuJJaR]

Great news!!!

Best of luck to ISRO

 

[IND151]

double post

 

[IND151]

lets hope launch becomes successful.

 

[Invincible INDIAN]

As its a PSLV launch, for sure it will be a target hit!!!!

Well done DRDO

 

[HitesH]

Bharat launching satellite. Pray to god it does not fail again.

Why you waste money when buying with some dollars can do the job. My company in Singapore buys few transponders from an American satellite and job done. Look at Pakistan we do not have any shortage of TV channels but we do not need to launch satellites and waste money.

thats the difference between a better country mentality and not so better country's people's mentality
ur seeing the glass half empty
and we see it as glass half filled

its not just about buying things its about being self reliant
if Sir Satish Dhavan had thought the same way, that giving contracts to other countries for launching our satellites and why waste money on that, then probably india would have never become a global power in space today

 

[tvsram1992]

3 Things not to be compromised
1.Defence
2.Nukes
3.Space
a part from economy....

 

[Firemaster]

3 Things not to be compromised
1.Defence
2.Nukes
3.Space
a part from economy....

What about morals?

 

[tvsram1992]

What about morals?

economy .... and so on.....the list goes....