India launches GSAT-14 for tele-education and tele-medicine

GSLV-D5, the eighth flight of India’s Geosynchronous Satellite Launch Vehicle (GSLV) has launched GSAT-14 today at 16:18 hours from second launch pad at Satish Dhawan Space Centre SHAR (SDSC SHAR), Sriharikota to provide tele-education and tele-medicine services.

GSAT-14, a 1982 communication satellite will launch into Geosynchronous Transfer Orbit (GTO). After reaching GTO, GSAT-14 will use its own propulsion system to reach its geostationary orbital home and will be stationed at 74º East longitude.

GSAT-14 is the twenty third geostationary communication satellite of India built by ISRO. Four of GSAT-14’s predecessors were launched by GSLV during 2001, 2003, 2004 and 2007 respectively. After its commissioning, GSAT-14 will join the group of India’s nine operational geostationary satellites.

It is also the fourth developmental flight of GSLV. During this flight, the indigenously developed Cryogenic Upper Stage (CUS) will be flight tested for the second time.

GSLV-D5 is a three-stage launch vehicle with solid, liquid and cryogenic stages. It is designed to inject 2 Ton class of communication satellites to Geosynchronous Transfer Orbit (GTO). The four liquid L40 strap-ons as well as the second stage of GSLV use storable liquid propellants.

A Cryogenic rocket stage is more efficient and provides more thrust for every kilogram of propellant it burns compared to solid and earth-storable liquid propellant ocket stages. Specific impulse (a measure of the efficiency) achievable with cryogenic propellants (liquid Hydrogen and liquid Oxygen) is much higher compared to earth storable liquid and solid propellants, giving it a substantial payload advantage.

GSLV-D5 vehicle is configured with its first and second stages similar to the ones flown during earlier GSLV missions. The third stage is the indigenous cryogenic stage. The metallic payload fairing with a diameter of 3.4 metre is adopted for GSLV-D5.

GSAT-14 has 6 Extended C-Band transponders, 6 Ku-band transponders and 2 Ka-band beacons. Six extended C-band transponders for Indian mainland and island coverage with 36 dBW. Six Ku-band transponders covering the mainland India with 51.5 dBW and Two Ka-band Beacons operating at 20.2 GHz and 30.5 GHz to carry out attenuation studies.

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