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Countdown for Indian navigation satellite IRNSS-1H launch begins

31 Août 2017

This over 1400kg spacecraft is India's first satellite built by the private sector and supervised by ISRO. It comes with more flexibility in service, and it is compatible with the satellites, which are in orbit.

Incidentally, ISRO is launching the IRNSS-1H as a backup for the IRNSS-1A satellite, which lost all three of its rubidium atomic clocks.

IRNSS-1H, the backup satellite in the indigenous navigation system, will be launched by PSLV-C39 rocket from Sriharikota at 6.59 pm.

Reportedly, more and more companies will be involved in the satellite assembly activities subsequently as they can be quite helpful in the swift preparation of a satellite.

A S Kiran Kumar told TOI, "For the first time, a private company has been involved in the integration of a satellite".

Around 25 percent of the development work of IRNSS-1H was successfully completed by a consortium led by Bengaluru-based Alpha Design Tecnologies, under the guidance of ISRO scientists.

"Subsystems of the payload and launch vehicle are already being developed in collaboration with the industry", he added.

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Five flood rescue teams and two diving teams are also ready to render assistance at different locations across Mumbai , he added. Earlier in the day, the Maharashtra Chief Minister also appealed to people to step out of their homes only if necessary.

In fact, the same consortium will be behind the development of another satellite which is supposed to take off by April 2018.

The first satellite as part of the IRNSS was launched on July 1, 2013.

The satellite systems can be used for providing position, navigation or for tracking the position of something fitted with a receiver. It is meant for navigation based applications. The Indian Space Research Organisation (ISRO) had to quickly get two back-ups ready when all three rubidium atomic clocks on 1A failed around mid-2016. When the time signal is missing, getting true positional accuracy becomes a problem. The satellite will replace one of NAVIC's seven satellites that is malfunctioning.

The NAVIC - a system of seven home-made navigational satellites - is now powering the Swadeshi Global Positioning System. NaVIC, which has become operational but is yet to be commercialised, has several key applications.

This will be the 42st flight of India's workhorse Polar Satellite Launch Vehicle during which it will inject the satellite into a sub-geosynchronous transfer orbit (Sub-GTO).

The Indian space agency also said NavIC is useful for merchant ships in their navigation and also during search and rescue operations. After injection into this preliminary orbit, two solar panels of IRNSS-1H will be automatically deployed, and the master control facility at Hassan will perform orbit raising manoeuvres of the satellite.

Countdown for Indian navigation satellite IRNSS-1H launch begins