IRNSS-1I: ISRO successfully launches navigation satellite

The Indian Space Research Company (ISRO) has successfully launched IRNSS-1I navigation satellite from Sriharikota in Andhra Pradesh.

The satellite premiered on board of PSLV-C41 (elevation of 44.4 meters and weight of 321 tonnes) following the normal lift-off and was successfully positioned in the designated orbit. It had been overall 20th air travel of PSLV-XL version and 41st successful objective of total 43 of PSLV.

The PSLV-C41/IRNSS-1I mission blasted off at 4.04am from the first launchpad at the Sathish Dhawan Space Centre. It was a standard lift-off.

Key Facts:

PSLV, injected the satellite into orbit 19 minutes after lift-off from the area centre here. It had been the 41st successful objective of the 43 for PSLV.

The 1,425-kg satellite created by Bengaluru-headquartered Alpha Design Technologies, in cooperation with Isro, is the next satellite to be built by the private industry actively.

Isro chairman K. Sivan defined the mission as successful and congratulated researchers. IRNSS-1I was effectively placed in the specified orbit and it was a precision injection.

Portion both civilian and military needs, the regional navigation satellite system, called NavIC also, will transmit highly-accurate timing signs a receiver may use to triangulate its location.

The prior mission of the PSLV carrying IRNSS-1H in August this past year failed after the heat shield within the satellite didn’t separate.


The IRNSS-1I, possessing a lift-off weight of 1,425 kg will carry L5 and S-band navigation payloads and C-band ranging payloads. It will also have corner cube retroreflectors for LASER ranging.

The purpose of IRNSS is to create India’s own navigation system which would be quite similar to the US’ GPS or Global Setting System.

IRNSS-1I is likely to replace IRNSS-1A, the to begin the seven navigation satellites, that was rendered ineffective following its 3 rubidium atomic clocks failed. The seven satellites are area of the NavIC navigation satellite constellation.

The release is Isro’s second attempt at sending an upgraded satellite. The constellation provides indicators in an area covering India and its own environment also, that could be utilised by using receivers on ground to determine time and position accurately.

The IRNSS-1I objective takes place a couple weeks following the space company launched GSAT-6A up to speed GSLV Mk-II.

Although rocket positioned GSAT-6A in orbit, the Isro lost communication with the satellite. Like its predecessors, IRNSS-1I transported two types of payloads: Navigation and Varying.

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