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Aryabhata Satellite
IRNSS-1G was the seventh and final of the Indian Regional Navigation Satellite System (IRNSS) series of satellites after IRNSS-1A, IRNSS-1B, IRNSS-1C, IRNSS-1D, IRNSS-1E and IRNSS-1F. This system of satellites will provide navigational services to the Indian region. The satellite was placed in geosynchronous orbit successfully on April 28, 2016 at 12:50–pm IST.

The satellite was launched from the First Launch Pad (FLP) of Satish Dhawan Space Centre, Sriharikota on board PSLV-C33. The countdown of the launch had begun 51:30 hours before at 9:20 a.m. IST on 25 April.

After the launch of IRNSS-1G the Indian government named the IRNSS system as NAVIC (Navigation Indian Constellation).

The satellite is designed for 12 years of life. It has a lift-off mass of 1,425 kilograms (3,142 lb) and dry mass of 598 kilograms (1,318 lb). The ranging payload of IRNSS-1G consists of a C-band transponder (automatic receivers and transmitters of radio signals) which facilitates accurate determination of the range of the satellite. It would operate in L-5 and S band spectrums and also has a Rubidium atomic clock. Special thermal control systems are used for key components like this clock. Two panels of solar cells are used to generate 1660W of energy and one Litium-ion 90A-hr battery is used. The satellite is placed in an orbit at an altitude of 497.8 kilometres (309.3 mi) at 129.5 deg East longitude. It cost approximately 125 crore (US$19 million).

The "XL" version of PSLV was used with six strap-ons for the launch. Each strap-on used 12 metric tons (12 long tons; 13 short tons) of propellant. ISRO has successfully used PSLV 34 times and the XL version 12 times before the launch of IRNSS-1G.

This page was last edited on 12 April 2018, at 04:27 (UTC).
Reference: under CC BY-SA license.

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