jeudi 29 mars 2018

ISRO - GSLV Successfully Launches GSAT-6A Satellite











ISRO - Indian Space Research Organisation logo.

Mar 29, 2018

GSLV-F08/GSAT-6A lift off

India's Geosynchronous Satellite Launch Vehicle (GSLV-F08) successfully launched GSAT-6A Satellite into Geosynchronous Transfer Orbit (GTO) today (March 29, 2018). Today’s launch of GSLV was its twelfth and took place from the Second Launch Pad at Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota, the spaceport of India. This is the fifth consecutive success achieved by GSLV carrying indigenously developed Cryogenic Upper Stage.

In its oval shaped GTO, GSAT-6A is now orbiting the Earth with a perigee (nearest point to Earth) of 169.4 km and an apogee (farthest point to Earth) of 36,692.5 km with an orbital inclination of 20.64 deg with respect to the equator.

GSLV-F08 Liftoff and Onboard Camera Video

Few seconds before the launch countdown reached zero, the four liquid propellant strap-on motors of GSLV-F08, each with nearly 43 tons of liquid propellants, were ignited. At count zero and after confirming the normal performance of all the four  strap-on motors, the 139 ton solid propellant first stage core motor was ignited and GSLV lifted off at 16:56 IST, as scheduled. The major phases of the flight occurred as intended.  About seventeen and a half minutes after lift-off, GSAT-6A was successfully placed in GTO.                                       .

Soon after separation from GSLV, the two solar arrays of GSAT-6A were automatically deployed in quick succession and the Master Control Facility (MCF) at Hassan in Karnataka assumed control of the satellite.

GSAT-6A Satellite

GSAT-6A is a communication satellite built by ISRO to provide mobile communication services through multi beam coverage.  For this, it is equipped with S and C band transponders.

In the coming days, the orbit of GSAT-6A will be raised from its present GTO to the final circular Geostationary Orbit (GSO) by firing the satellite's Liquid Apogee Motor (LAM) in stages. The Satellite will be commissioned into service after the completion of orbit raising operations and its positioning in the designated slot in GSO following in-orbit testing of its payloads.

GSLV-F08  is the 12th flight of Geosynchronous Satellite Launch Vehicle (GSLV) and Sixth flight with indigenous Cryogenic Stage. The Launch of GSLV-F08 carrying GSAT-6A took place from the Second Launch Pad (SLP) in Satish Dhawan Space Centre SHAR, Sriharikota.

GSAT-6A, similar to GSAT-6 is a high power S-band communication satellite configured around I-2K bus. The mission life of spacecraft planned is about 10 years. The satellite will also provide a platform for developing technologies such as demonstration of 6 m S-Band Unfurlable Antenna, handheld ground terminals and network management techniques that could be useful in satellite based mobile communication applications.

GSLV F08-GSAT6A Brochure: https://www.isro.gov.in/gslv-f08-gsat-6a-mission/gslv-f08-gsat6a-brochure

For more information about Indian Space Research Organisation (ISRO), visit: https://www.isro.gov.in/

Images, Video, Text, Credit: ISRO.

Best regards, Orbiter.ch

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