GSLV Successfully Launches GSAT-6A Satellite (Download PDF)

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On 29th March 2018, India successfully launched GSAT-6A communication satellite using its heavy rocket Geosynchronous Satellite Launch Vehicle (GSLV-F08). Satellite is equipped w/S & C band transponders & has mission life of about ten years.

Image of GSLV Successfully Launches GSAT-6A Satellite

Image of GSLV Successfully Launches GSAT-6A Satellite

Image of GSLV Successfully Launches GSAT-6A Satellite

  • After separation from GSLV, two solar arrays of GSAT-6A were automatically deployed in quick succession & Master Control Facility (MCF) at Hassan, Karnataka assumed control of satellite.
Map of Insertion of GSAT-6A satellite into GTO

Map of Insertion of GSAT-6A Satellite into GTO

Map of Insertion of GSAT-6A satellite into GTO

  • GSAT-6A is communication satellite built by ISRO to provide mobile communication services thru multi beam coverage.

Insertion of GSAT-6A Satellite into GTO

  • GSLV rocket successfully placed satellite in Geosynchronous Transfer Orbit (GTO) & from GTO, satellite will be taken up to its final geostationary orbit by 3 orbit raising manoeuvres.
  • GSAT-6A launch took place from 2nd launch station at Satish Dhawan Space Centre (SDSC) Shar, Sriharikota, Space Port of India, Andhra Pradesh.
  • In oval shaped GTO, GSAT-6A is, presently, orbiting Earth w/perigee (nearest point to Earth) of 169.4 km & apogee (farthest point to Earth) of 36, 692.5 km.
  • Orbit of GSAT-6A will be raised from GTO to final circular Geostationary Orbit (GSO) by firing satellite’s Liquid Apogee Motor (LAM) in stages.
  • Satellite will be commissioned into service after completion of orbit raising operations.
  • Satellite will be positioned in designated slot in GSO, following in-orbit testing of its payloads.

GSLV Rocket

  • This launch marks 12th flight of Geosynchronous Satellite Launch Vehicle GSLV-F08 & 5thconsecutive success achieved by GSLV carrying indigenously developed Cryogenic Upper Stage engine.

  • GSLV is 3 stage rocket. The core of 1st stage is fired w/solid fuel & 4 liquid propellant strap-on motors are ignited w/liquid fuel, 2nd stage is liquid fuel-propelled & 3rd is cryogenic engine.

Controversy Regarding GSAT-6A and GSAT-6

  • GSAT-6A satellite is similar to GSAT-6.
  • 2 satellites became subject of controversy as 90 % of transponders were supposed to be leased to Bengaluru-based Devas Multimedia by ISRO’s commercial arm Antrix Corporation under deal, which was cancelled in February 2011 as India’s defence needs had to be met.
  • Under deal, Devas was to use transponders of GSAT-6 & GSAT-6A in crucial S-Band wavelength for its digital multimedia service for 12 years.
  • Antrix signed USD 300 million contract w/Devas in January 2005. It obtained sanction of Space Commission & Union Cabinet w/o informing govt. that transponders would be leased to Devas.
  • As controversy broke out in December 2009, ISRO asked Space Commission to review deal & subsequently Space Commission had recommended its annulment.
  • Antrix terminated deal on February 25, 2011. Later, GSAT-6 was launched in 2015.

Indian Space Research Organisation (ISRO)

  • ISRO is space agency of GoI headquartered in Bangalore.
  • ISRO was established in 1969.
  • Objective of ISRO is to use space technology & its application to various national tasks.

- Published/Last Modified on: July 16, 2018

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