ISRO successfully launches communication satellite GSLV-D6

MUMBAI: The Indian Space Research Organisation (ISRO) has successfully launched the communication satellite GSLV-D6. 

GSLV-D6 will launch 2117 kg GSAT-6, an advanced communication satellite, into a GTO. GSAT-6 will provide S-band communication services in the country. After reaching GTO, GSAT-6 will use its own propulsion system to reach its final geostationary orbital home and will be stationed 0 at 83 East longitude.

This is the ninth flight of India’s Geosynchronous Satellite Launch Vehicle (GSLV). It is also the fifth developmental flight of GSLV. This is the third time the indigenously developed Cryogenic Upper Stage (CUS) is being carried on-board during a GSLV flight.

GSLV-D6 flight is significant since it intends to continue the testing of CUS. GSLV is designed to inject two ton class of communication satellites into Geosynchronous Transfer Orbit (GTO).

GSLV-D6 was launched from the second launch pad at Satish Dhawan Space Centre SHAR (SDSC SHAR), Sriharikota.

GSLV-D6 vehicle is configured with all its three stages including the CUS similar to the ones successfully flown during the previous GSLV-D5 mission in January 2014. GSLV-D5 successfully placed GSAT-14 satellite carried on-board in the intended GTO very accurately.

The metallic payload fairing of GSLV-D6 has a diameter of 3.4 m. The overall length of GSLV-D6 is 49.1 m with a lift-off mass of 416 t.

The CUS being flown in GSLV-D6 is designated as CUS-06. The main engine and two smaller steering engines of CUS together develop a nominal thrust of 73.55 kN in vacuum. During the flight, CUS fires for a nominal duration of 720 seconds.

S-band telemetry and C-band transponders enable GSLV-D6 performance monitoring, tracking, range safety/flight safety and Preliminary Orbit Determination (POD).