Geosynchronous Satellite Launch Vehicle (GSLV) MkI & II

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Mk1 - GSAT3 Launch----------------------------Mk2 - GAST 4

 

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From WIki:

GSLV Mark I​

The first developmental flight of GSLV Mark I had a 129 tonne (S125) first stage and was capable of launching around 1500 kg into geostationary transfer orbit. The second developmental flight replaced the S125 stage with S139. It used the same solid motor with 138 tonne propellant loading. The chamber pressure in all liquid engines were enhanced, enabling a higher propellant mass and burn time. These improvements allowed GSLV to carry an additional 300 kg of payload. The fourth operational flight of GSLV Mark I, GSLV-F06, had a longer third stage called the C15 with 15 tonne propellant loading and also employed a 4 meter diameter payload fairing

 

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GSLV Mark II

This variant uses an Indian cryogenic engine, the CE-7.5, and is capable of launching 2500 kg into geostationary transfer orbit. Previous GSLV vehicles (GSLV Mark I) have used Russian cryogenic engines.

For launches from 2018, a 6% increased thrust version of the Vikas engine was developed. It was demonstrated on 29 March 2018 in the GSAT-6A launch second stage. It was used for the four Vikas engines first stage boosters on future missions.

A 4m diameter Ogive payload fairing was developed and deployed for the first time in the EOS-03 launch on 12 August 2021, although this launch was a failure due to technical anomalies with the Cryogenic Upper Stage. This will allow GSLV vehicles to accommodate larger payloads.​

 

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Geosynchronous Satellite Launch Vehicle [GSLV] - an ISRO-lead Indian Technological Endeavour


View: https://www.youtube.com/watch?v=w99vC4MFNOg

 

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ISRO's GSLV-D5 Satellite Launch Vehicle Mission Being Readied For Launch


View: https://www.youtube.com/watch?v=dq7ORTXXABw

 

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The Launch of GSLV-D5/GSAT - 14 Mission


View: https://www.youtube.com/watch?v=Y7HIvfhoFHM

 

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Target Perigee: 180 ± 5 km
Perigee deviation from predicted position: 40 meters
Target Apogee: 35975 ± 675 km
Apogee deviation from predicted position: 50 Km

Turbo Pump RPM Performance
Predicted Performance: 40,000 RPM
Actual Performance: 39,800 RPM

Booster Turbo Pump RPM Performance
Predicted Performance: 34500 RPM
Actual Performance: 34553 RPM

 

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The launch of GSLV -F05/INSAT –3DR Mission - LIVE


View: https://www.youtube.com/watch?v=pRX6Hk_eAK0

 

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View: https://x.com/isro/status/1663084757788545024

 

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View: https://x.com/TirthaChakraba2/status/1663200844983185409

 

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View: https://x.com/ISROSight/status/1880203059936329931