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Which quasar are ISRO referring to for MOM???
Not as if I know of all quasars around...but just curious???
And why a quasar is used for standard reference??Why not something else???

I think the "generally the visually adjacent Quasar" as written in the earlier pictorial explains it all. There isn't One fixed Quasar, but that quasar which is visually adjacent to the spacecraft is taken as the reference. This will change everytime with the rotation of the Earth and the motion of the spacecraft.

Quasars, because they are a steady source of Radio waves, and because they're so distant to us, serve as stationary measuring posts whose locations can be determined with high accuracy.
 
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Integrating GSLV D5

The cynosure of all eyes, Indigenous Cryogenic stage photographed upon arrival at Vehicle Assembly building. The strap-on stages and the core stage of GSLV D5 are also seen.

*In this series we bring to you a quick recap of the step by step resurrection of GSLV D5 with the indigenously developed Cryogenic engine and stage*

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Integrating GSLV D5

The cynosure of all eyes, Indigenous Cryogenic stage photographed upon arrival at Vehicle Assembly building. The strap-on stages and the core stage of GSLV D5 are also seen.

*In this series we bring to you a quick recap of the step by step resurrection of GSLV D5 with the indigenously developed Cryogenic engine and stage*

1545030_1452705848286106_210600676_n.jpg
 
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Hey, Thanks! Wishing you an Awesome New Year too!:-)
@Indischer @ levina @KRAIT @Srinivas @Victory @Roybot , wishing u guys a very happy new year. Cairokee way :cheers:
@chak de INDIA Happy new year mate !!!
@chak de INDIA Happy new year mate !!!
Thanks dude. Wishing You and All PDF-ites a Very Happy, Prosperous and Fulfilling New Year ahead.:cheers:
Same to you bro. :D



:mad::o:o_O:what::undecided::hitwall::angry::sniper:Wishing you all very very very Happy New Year.:-)
 
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wish u the same buddy, enjoy the song :-)
:-):cheesy::police::sick::lol:

Mission Status: GSLV-D5/GSAT-14
We are all set for the launch, the launch rehearsal has been successfully completed a few hours back, all results are apparently normal...

GSLV D5 : Vital stats

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The 29-hour countdown for the GSLV D5 launch is expected to commence around 11.20 AM IST today. GSLV D5, with Indian cryogenic stage and GSAT-14 is scheduled to take off from Sriharikota at 4:18 PM IST this Sunday.

We will keep you posted.

GSLV D5 is ready to take off

GeoSynchronous Satellite Launch Vehicle with Indian Cryogenic stage is all set to soar into the skies from Sriharikota this Sunday. Launch rehearsal has just been completed satisfactorily.

Catch up with more interesting insights on our various other missions through our official social media channels.

Indian Space Research Organization - Bangalore, India - Government Organization | Facebook &
https://twitter.com/isroofficial

Keep rocking, MOM !

MOM has already covered a distance of 80 million kms. Bravo !

Another 600 million kms to go for a rendezvous with The Red Planet . Keep sailing MOM.

Will 2014 place ISRO in cryo club? - The Hindu

Will 2014 place ISRO in cryo club?


Will 2014 see a 20-year-old Indian space dream come true? January 5 should tell whether years of ISRO’s toil and tears will fructify and usher India into a select club of countries — those with their own cryogenic rocket engine technology, which can launch their communication satellites from their soil.

Space agency ISRO, flush from launching its Mars Orbiter Mission, will face its acid test on Sunday when it flies the GSLV-D5 launch vehicle with the indigenously built cryogenic upper third stage. To succeed, the launcher must place GSAT-14, a two-tonne-class satellite, in the planned orbit.

ISRO Chairman K. Radhakrishnan told The Hindu that the GSLV flight with an indigenous cryogenic stage would be a priority mission for 2014.

The upcoming launch is said to be extremely vital for the organisation morally and operationally. The first such bid failed in April 2010. A second attempt was called off in August 2013, an hour before the launch, after a fuel leak was detected. In the last four or so months, the organisation had done everything to ready a “refurbished” vehicle, Dr. Radhakrishnan said. Significant changes were made, including new fuel tanks, systems and material, based on the recommendations of the K. Narayana committee that went into the August leak episode.

The teams started re-assembling the current vehicle on October 18, 2013. The three-stage GSLV rocket has a first stage (S139) propelled by solid fuel; its four strap-on (L40) boosters use liquid fuel. The second stage GS2 uses liquid propellants. The third cryo stage uses liquid hydrogen and liquid oxygen. While D5’s cryo stage was found healthy after August, ISRO had to work anew on the other two.

Dr. Radhakrishnan said: “We got a new S139 solid first stage. Its four liquid strap-on stages have a lot of avionics, so we refurbished them at Mahendragiri and Hindustan Aeronautics Ltd. We also made a new second stage. When the launch was called off in August, the liquid stage had to be drained of fuel and washed with much water. This might have affected the electronics systems, so we replaced them, too.”

More importantly, the fuel tank material has been changed, fully phasing out the traditional but corrosion-prone aluminium-zinc combine, called AFNOR 7020. The new alternative, aluminium-copper alloy called AA2219, is now the material for all PSLV and GSLV tanks.
 
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