GSLV MkIII Geosynchronous Satellite Launch Vehicle.

GSLV MkIII Geosynchronous Satellite Launch Vehicle.

ISRO just launched Chandrayan 2 with the help of GSLV MarkIII(GSLV MkIII). Geosynchronous Sattelite Launch Vehicle is the most powerful rocket booster made by ISRO, This vehicle will help in India’s manned mission for moon 2022. In this post, we are going to talk about Chandrayan 2 and GSLV MkIII.


GSLV MkIII is a three-stage heavy payload launch vehicle from ISRO. It has a cryogenic upper stage, Geosynchronous Transfer Orbit(GTO) and 10 tons of payload to Lower Earth Orbit, if we compare this vehicle from GSLV MkII(previous one), GSLV MkIII is 2x more powerful.
two solid strap-ons and a core liquid booster. This vehicle can carry 4 ton of payload(satellites) to
On motors of GSLV MkIII, the two strap-ons are situated on either side of its core liquid core booster(S200). Ignition of these two booster results in the lift-off of the complete rocket and functions only for 140 seconds, each of them carry 205 tons of composite solid propellant.
Engines of liquid core booster ignite 114 sec after lift-off to thrust GSLV. These two engines works after the separation of strap-ons(140 seconds after lift-off).

Successful Mission using GSLV MkIII


  • Successful Flight of LVM3 CARE(Crew Module Atmospheric Reentry Experiment) for manned Moon Mission.
  • GSAT-19 satellite on June 5, 2017, from Sriharikota
  • GSAT-29 satellite on November 14, 2018, from Sriharikota
  • Successfully launched Chandrayan 2 on July 22, 2019.


All missions were launched from Satish Dhawan Space Centre Sriharikota.


GSLV MkIII Specification

  • Height of Rocket- 43.43 m
  • Diameter- 4 m
  • Heat Shield- 5 m
  • Stages- 3
  • Lift Off Mass- 640 tones

Some Notable Features of GSLV Mk III

  • It can carry 4000 kg payload to Geosynchronous Transfer Orbit
  • It can carry 8000 kg of payload to Lower Earth Orbit(600 KM altitude).
  • Cryogenic Upper Stage Engine(C25), it is powered by CE-20, this engine is India’s largest cryogenic engine.

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