ISRO launches navigation satellite IRNSS-1I from Sriharikota

Isro set to launch first privately built satellite today

Isro set to launch first privately built satellite today

Thus, ISRO completed the constellation that needs seven functional satellites to provide foolproof satellite-based navigation signals.

The PSLV took off at 2234 GMT (6:34 p.m. EDT) with a rush of flame from a solid-fueled core motor and four strap-on solid rocket boosters.

The satellite's inputs would also be used for regulating road transport, air navigation, communication, disaster management, ocean patrol, overall surveillance measures, etc.

The satellite was launched by PSLV-C41 and was placed in the designated orbit 19 minutes after the lift-off. The Indian space organization has already begun their work to build and launch its first PSLV by 2020.

Indian Space Research Organisation (ISRO) on Thursday successfully launched the Indian Regional Navigation Satellite System-1I or IRNSS-1I from Satish Dhawan Space Centre on Sriharikota Island. "It will be the start of Isro's journey of using the industry to be system integrators of satellites", said an Isro scientist, who did not want to be named.

The IRNSS-1I is set to replace the IRNSS-1A, the first of the seven IRNSS satellites, launched in 2013 and it is expected to rectify three atomic clocks of the IRNSS-1A, which stopped working in 2016.


The PSLV-C41/IRNSS-1I Mission blasted off at 4.04 am. The Indian Air Force is expected to switch from Global Positioning System to IRNSS when it is deemed fully functional and transponders required to receive IRNSS signals are available.

ISRO says the receiver will be connected to fishermen's phones' via Bluetooth.

This is the second attempt by ISRO to send a replacement satellite as on August 2017 the launch of IRNSS-1H failed.

NavIC, also known as Indian Regional Navigation Satellite System (IRNSS), is an independent regional navigation satellite system created to provide position information in the Indian region and 1500 km around the Indian mainland.

In the coming days, orbit manoeuvres will be performed from MCF to position the satellite at 55 deg East longitude in the planned Geosynchronous Orbit with an inclination of 29 deg to the equator. Like all other IRNSS satellites, IRNSS-1I also has a lift-off mass of 1,425 kg. "One speciality of this mission is it was within two weeks (of the last launch), the shortest time span we had two missions from the spaceport".

The biggest is OneWeb, the satellite firm backed by Richard Branson and Softbank that plans to launch over 1,000 satellites.

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