ISRO's Polar Satellite Launch Vehicle proves its mettle again. PSLV-C17, in its 19th flight, successfully launches India's communication satellite GSAT-12 from the Second Launch Pad of Satish Dhawan Space Centre- SHAR, Sriharikota, India. PSLV-C17 measuring 44.5 m height, with a lift off weight of 320 tonnes has four stages of solid and liquid propulsion systems alternately. In its XL Version, PSLV-XL uses six extended solid strap-on motors wherein each strap-on carries 12 tonnes of solid propellant. This is a second time such a configuration is being flown, earlier one being the PSLV-C11/Chandrayaan-I mission.
Salient feature of PSLV-C17/GSAT-12 Mission:
· For the first time, use of indigenously designed and developed On-Board computer (OBC) with Vikram 1601 processor in both primary and redundant chains of the vehicle. The OBC performs the functions of Navigation, Guidance and Control processing for the vehicle.
· Use of extended solid strap-on configuration
· Satellite injection in elliptical transfer orbit sub-Geosynchronous Transfer Orbit (GTO)
· Five burn strategy (2 perigee burn and 3 apogee burn) for placing the GSAT-12 satellite from its sub-GTO to Geostationary Orbit
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