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ISRO puts 4 satellites into orbit  

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CIOL Bureau
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SRIHARIKOTA: Indian Space Research Organisation’s Polar Satellite launch Vehicle today successfully launched four satellites into a polar orbit at an altitude of 637 km with an inclination of 97.9 degrees with respect to the equator.

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It was in its tenth flight conducted from Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota, today, that ISRO’s PSLV-C7 launched the satellites, India’s CARTOSAT-2 and Space capsule Recovery Experiment (SRE-1), Indonesia’s LAPAN-TUBSAT and Argentina’s PEHUENSAT-1 into a 635 km high polar orbit.

For the first time, a Dual Launch Adopter (DLA) was used in PSLV to accommodate two primary satellites in tandem.

The 680 kg main payload, CARTOSAT-2, mounted over DLA, was the first satellite to be injected into orbit at 981.3 sec after lift-off at an altitude of 639 km.

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About 45 seconds later, DLA with the 6 kg PEHUENSAT-1 mounted on it, was separated. 120 seconds later, the 550 kg Space capsule Recovery Experiment (SRE-1) mounted inside DLA was separated and finally, 190 seconds later, the 56 kg LAPAN-TUBSAT, mounted on the equipment bay ofPSLV fourth stage was separated.

The initial signals indicated normal health of the satellites.

PSLV is the workhorse launch vehicle of the ISRO with nine consecutively successful flights so far. Since its first successful launch in 1994, PSLV has launched seven Indian remote sensing satellites, an amateur radio satellite, HAMSAT, and four small satellites for foreign customers into 550-800 km high polar SSOs.

Besides, it has also launched India’s exclusive meteorological satellite, Kalpana-1, into Geosynchronous Transfer Orbit (GTO). PSLV will also be used to launch India’s first spacecraft mission to moon, Chandrayaan-1, during 2008.

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