Tag Archives: Polar Satellite Launch Vehicle

ISRO Successfully Launches IRNSS-1I Navigation Satellite, What’s Next?

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In its 43rd flight, ISRO’s Polar Satellite Launch Vehicle (PSLV-C41) successfully launched the 1,425 kg IRNSS-1I Navigation Satellite on Thursday from Satish Dhawan Space Centre SHAR, Sriharikota in Andhra Pradesh.

PSLV-C41 lifted off at 0404 hrs (4:04 am) IST from the First Launch Pad. After a flight lasting about 19 minutes, the vehicle achieved a Sub-Geosynchronous Transfer Orbit with a perigee (nearest point to earth) of 281.5 km and an apogee (farthest point to earth) of 20,730 km inclined at an angle of 19.2 degree to the equator. At this point, IRNSS-1I separated from PSLV.

After separation, the solar panels of IRNSS-1I were deployed automatically. ISRO’s Master Control Facility (MCF) at Hassan, Karnataka took over the control of the satellite. In the coming days, orbit manoeuvres will be performed from MCF to position the satellite at 55 degree East longitude in the planned Geosynchronous Orbit with an inclination of 29 degree to the equator.

IRNSS-1I is the latest member of the ‘Navigation with Indian Constellation (NavIC)’ system. NavIC, also known as Indian Regional Navigation Satellite System (IRNSS), is an independent regional navigation satellite system designed to provide position information in the Indian region and 1,500 km around the Indian mainland.

A number of ground facilities responsible for IRNSS satellite ranging and monitoring, generation and transmission of navigation parameters, satellite control, network timing, among others have been established in many locations across the country as part of NavIC.

Till now, PSLV has successfully launched 52 Indian satellites and 237 customer satellites from foreign customers.

PSLV-C37 Launches 104 Satellites in One Flight, Sets New Record

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In its 39th flight PSLV-C37, ISRO’s Polar Satellite Launch Vehicle successfully launched the 714 kg Cartosat-2 Series Satellite and 103 other satellites on Wednesday morning, February 15, 2017, at 9:28 am from Satish Dhawan Space Centre SHAR, Sriharikota.

This is the 38th consecutively successful mission of PSLV, which weighed 1,378 kg, that lifted off from the First Launch Pad.

Within 16 minutes 48 seconds, the satellites achieved a polar Sun Synchronous Orbit of 506 km inclined at an angle of 97.46 degree to the equator and in the succeeding 12 minutes, all the 104 satellites successfully separated from the PSLV.

In a predetermined sequence Cartosat-2 followed by INS-1 and INS-2 separated, making the total number of Indian satellites launched by PSLV to 46.

The two arrays of Cartosat-2 series satellite were deployed and ISRO’s Telemetry, Tracking and Command Network (ISTRAC) at Bangalore took over the control of it. Next, the satellite will be brought to its final operational configuration following which it will begin to provide remote sensing services using its panchromatic (black and white) and multispectral (colour) cameras.

The imagery from the Cartosat-2 series satellite will be useful for cartographic applications, urban and rural applications, coastal land use and regulation, utility management like road network monitoring, water distribution, creation of land use maps, Land Information System (LIS) and Geographical Information System (GIS) applications.

The data sets will be useful for urban planning of 500 cities under the Amrut Planning Scheme. The government initiative of 100 smart city programme in which these data sets could be used for master plan preparation.

Of the 103 co-passenger satellites carried by PSLV-C37, two – ISRO Nano Satellite-1 (INS-1) weighing 8.4 kg and INS-2 weighing 9.7 kg – are technology demonstration satellites from India.

The remaining 101 co-passenger satellites carried were international customer satellites from USA (96), The Netherlands (1), Switzerland (1), Israel (1), Kazakhstan (1) and UAE (1).

The complex mission involved many technical challenges like realising the launch of a large number of satellites during a single mission within the time frame sought by the customers from abroad. With today’s successful launch, the total number of foreign satellites on PSLV has reached 180.