Nellore: The Polar Satellite Launch Vehicle (PSLV-C17) carrying India’s communication satellite GSAT-12 will be launched from the Satish Dhawan Space Centre, Sriharikota at 4:48 PM on Friday.
The 53-hour countdown for the launch of the satellite began at 11:48 AM on Wednesday after the Launch Authorisation Board (LAB) for PSLV-C17/GSAT-12 h cleared the launch.
The GSAT-12 Communication satellite with a mass of 1410 kg at lift-off, has 12 Extended C-band transponders.
PSLV-C17 will inject GSAT-12 into an elliptical Transfer Orbit (Sub-GTO) of 284 km perigee and 21,000 km apogee. Subsequently, the Liquid Apogee Motor of the satellite will be used to raise both apogee and perigee of the Satellite to place it in a circular orbit of 36,000 km altitude.
GSAT-12 satellite has already undergone necessary testing at Shriharikota before commencing the filling of propellants in the Satellite on June 28, 2011.
During the countdown, propellant-filling operations of the liquid propellant second stage (PS2) and fourth stage (PS4) of the launch vehicle will be carried out.
Mandatory checks on the launch vehicle and spacecraft including charging of batteries and pressurisation of propellant tanks will be performed. Readiness of various ground systems such as tracking radar systems and communication networks will also be checked.
PSLV-C17 will launch GSAT-12 satellite into a sub-Geosynchronous Transfer Orbit of 284 km perigee and an apogee of 21,000 km. GSAT-12 communication satellite weighing 1410 kg with 12 Ext-C Band transponders will augment the communication services in the country.(INN)