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India Launches GSAT-19 From Its New, Heaviest Rocket

Tuesday, 06 June 2017, 11:47 Hrs
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SRIHARIKOTA: India Monday evening successfully launched its latest communication satellite GSAT-19 with its brand new and heaviest rocket - the Geosynchronous Satellite Launch Vehicle-Mark III (GSLV-Mk III).



The GSLV-Mk III rocket, on its first developmental flight, slung the 3,136 kg communication satellite in a geosynchronous transfer orbit from where it would be taken up to its final geostationary orbit.



Precisely at 5.28 p.m., the GSLV-Mk III rocket, on its maiden flight, began its ascent towards space from the second launch pad at the Satish Dhawan Space Centre (SDSC) at the Sriharikota spaceport here.



Just over 16 minutes into its flight, the 43.43 metre tall, 640 ton rocket, slung the GSAT-19 at its intended orbit at an altitude of 179 km.



"It is a historic day.. both the GSLV Mk-III and the GSAT-19 launch have been successful.. we are looking forward to its (GSAT-19) operations," Indian Space Research Organisation Chairman A.S. Kiran Kumar said.



The GSAT-19, as per the Indian Space Research Organisation is a multi-beam satellite that carries Ka and Ku band forward and return link transponders and geostationary radiation spectrometer (GRASP) to monitor and study the nature of charged particles and the influence of space radiation on satellites and their electronic components.



The satellite, which has a life span of 10 years, also features certain advanced spacecraft technologies including miniaturised heat pipe, a fibre optic gyro, micro electro-mechanical systems (MEMS) accelerometer, Ku-band TTC transponder, as well an indigenous lithium-ion battery.



The GSLV-Mk III is a three stage/engine rocket. The core of first stage is fired with solid fuel and its two motors by liquid fuel. The second is liquid fuel and the third is the cryogenic engine.



"The rocket's design carrying capacity is four tonnes. The payload will be gradually increased in future flights," Vikram Sarabhai Space Centre Director K. Sivan had told IANS.



The Indian space agency had flown a similar rocket without the cryogenic engine but with 3.7-tonne payload in 2014 mainly to test its structural stability and aerodynamics.



Liquid Propulsion Systems Centre Director S. Somanath, told IANS that the inputs of the 2014 mission enabled the ISRO to reduce the rocket load by around 20 pct.



Interestingly, GSLV-Mk III at around 43 metres is slightly shorter than Mk-II version that is around 49 metres tall.



ISRO officials told IANS that due to the increase in the diameters of various stages, the height got reduced despite a drastic increase in the weight - from around 415 ton of GSLV-Mk II to 640 ton in GSLV-Mk III.



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Source: IANS

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