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ISRO Launches IRNSS-1I Navigation Satellite from Sriharikota 

IRNSS-1I navigation satellite is expected to replace IRNSS-1A. 

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The Indian Space Research Organisation (ISRO) launched the IRNSS-1I navigation satellite, in the early hours on Thursday, 12 April, from Sriharikota in Andhra Pradesh, reported news agency PTI.

The IRNSS-1I is a key part of the country's constellation of navigation satellites.

PSLV-C41/IRNSS-1I Mission blasted off at 4.04 am from the first launchpad at the Sathish Dhawan Space Centre. It was a normal lift-off, ISRO officials said.

IRNSS-1I is expected to replace IRNSS-1A, the first of the seven navigation satellites, that was rendered ineffective after its three rubidium atomic clocks failed. The seven satellites are part of the NavIC navigation satellite constellation.
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The launch is ISRO's second attempt at sending a replacement satellite.

The previous mission of a PSLV carrying IRNSS-1H in August 2017 failed after the heat shield covering the satellite failed to separate.

The IRNSS-1I mission takes place two weeks after the space agency launched GSAT-6A on board GSLV Mk-II. Though the rocket placed GSAT-6A in orbit, the ISRO lost communication with the satellite within two days.

(With inputs from PTI.)

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