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GSLV Mk III

GSLV Mk III is a three-stage heavy lift launch vehicle developed by ISRO. The vehicle has two solid strap-ons, a core liquid booster and a cryogenic upper stage.

GSLV Mk III is designed to carry 4 ton class of satellites into Geosynchronous Transfer Orbit (GTO) or about 10 tons to Low Earth Orbit (LEO), which is about twice the capability of GSLV Mk II.

The two strap-on motors of GSLV Mk III are located on either side of its core liquid booster. Designated as ‘S200’, each carries 205 tons of composite solid propellant and their ignition results in vehicle lift -off . S200s function for 140 seconds. During strap-ons functioning phase, the two clustered Vikas liquid Engines of L110 liquid core booster will ignite 114 sec after lift -off to further augment the thrust of the vehicle. These two engines continue to function after the separation of the strap-ons at about 140 seconds after lift -off.

The first experimental flight of LVM3, the LVM3-X/CARE mission lifted off from Sriharikota on December 18, 2014 and successfully tested the atmospheric phase of flight. Crew module Atmospheric Reentry Experiment was also carried out in this flight. The module reentered, deployed its parachutes as planned and splashed down in the Bay of Bengal.

The first developmental flight of GSLV Mk III, the GSLV-Mk III-D1 successfully placed GSAT-19 satellite to a Geosynchronous Transfer Orbit (GTO) on June 05, 2017 from SDSC SHAR, Sriharikota.

Vehicle Specifications

Height

: 43.43 m

Vehicle Diameter

: 4.0 m

Heat Shield (Payload Fairing) Diameter

: 5.0 m

Number of Stages

: 3

Lift Off Mass

: 640 tonnes

TECHNICAL SPECIFICATIONS Payload to GTO: 4,000 kg

GSLV Mk III will be capable of placing the 4 tonne class satellites of the GSAT series into Geosynchronous Transfer Orbits.

Payload to LEO: 8,000 kg

The powerful cryogenic stage of GSLV Mk III enables it to place heavy payloads into Low Earth Orbits of 600 km altitude.

Cryogenic Upper Stage : C25

The C25 is powered by CE-20, India's largest cryogenic engine, designed and developed by the Liquid Propulsion Systems Centre.

Cryo Stage Height

: 13.5 m

Cryo Stage Diameter

: 4.0 m

Engine

: CE-20

Fuel

: 28 tonnes of LOX + LH2

Solid Rocket Boosters : S200

GSLV Mk III uses two S200 solid rocket boosters to provide the huge amount of thrust required for lift off. The S200 was developed at Vikram Sarabhai Space Centre.

Booster Height

: 25 m

Booster Diameter

: 3.2 m

Fuel

: 205 tonnes of HTPB (nominal)

Core Stage : L110 Liquid Stage

The L110 liquid stage is powered by two Vikas engines designed and developed at the Liquid Propulsion Systems Centre.

Stage Height

: 21 m

Stage Diameter

: 4 m

Engine

: 2 x Vikas

Fuel

: 110 tonnes of UDMH + N2O4

GSLV Mk III Launches Till Date


Title

Launch

Date

Launcher

Type

Payload


GSLV Mk III

2020

SLV-MK-III

Crew Module Vehicle


GSLV Mk III-D3

2019

SLV-MK-III

Crew Module Vehicle(Test-unmanned capsule)


GSLV Mk III-D2

January 2018

SLV-MK-III

GSAT-20

2

GSLV Mk III-D1

Jun 05, 2017

GSLV-MK-III

GSAT-19

1

LVM-3

Dec 18, 2014

GSLV-MK-III

Crew module Atmospheric Re-entry Experiment (CARE)

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