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India Returns PSLV to Service with Launch of Cartosat-2F

12 Jan 2018, 21:35 UTC
India Returns PSLV to Service with Launch of Cartosat-2F
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Nearly four and a half months after their last launch ended in failure, the Indian Space Research Organization (ISRO) successfully delivered the Cartosat-2F Earth-observation satellite to on Flight PSLV-C40.The Polar Satellite Launch Vehicle (PSLV), outfitted in its most powerful XL configuration — lifted off from the Satish Dhawan Space Center at 10:58 p.m. EST on January 11, 2018 (03:59 GMT on January 12), carrying the 1,570-pound (712 kilogram) primary satellite, along with 30 smaller secondary payloads, to a 314-mile (505-kilometer) high, Sun-synchronous orbit.The countdown proceeded smoothly, with technicians working no issues leading up to the planned launch time. At T-3 seconds, the PSLV’s roll-control thrusters sprang to life, followed shortly thereafter by the ignition of the first stage and four of the six S12 solid-fueled boosters.With both the first stage’s S139 motor and the strap-on boosters burning a solid mixture of hydroxyl-terminated polybutadiene (HTPB) fuel, the ignition sequence was quick and the vehicle rapidly left the pad.After clearing the tower, the vehicle rolled to assume a nearly due-South heading and climbed over the Indian Ocean. As the PSLV continued to accelerate, the two remaining boosters were ignited in-flight at T+25 seconds.Having exhausted their fuel supply, four of the six strap-on ...

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