(GIST OF SCIENCE REPORTER) ISRO’S 100TH MISSION: GSLV-F15 LAUNCHED SUCCESSFULLY FROM SRIHARIKOTA

(MARCH-2025)

Recently, ISRO successfully completed a century in the launches from its spaceport at Sriharikota with the 17th launch of GSLV.

The GSLV-F15 is the 11th flight of India’s indigenous cryo stage and the 17th flight of the country’s geosynchronous satellite launch vehicle (GSLV).
This is GSLV’s eighth flight using an in-house cryogenic stage and the 100th launch from India’s Spaceport Sriharikota.
GSLV-F15 payload fairing is a metallic version with a diameter of 3.4 meters.

The NVS-02 satellite was launched from the Second Launch Pad (SLP) at Satish Dhawan Space Centre, Sriharikota Range (SHAR), using the GSLV-F15 with an indigenous cryogenic stage, which will put it into a geosynchronous transfer orbit.
It is planned to add five second-generation NavIC satellites —NVS-01/02/03/04/05— to the NavIC base layer constellation with improved characteristics to guarantee service continuity.
The NVS series of satellites incorporates L1 band signals additionally to widen the services.
Like its predecessor, NVS-01, NVS-02, the second satellite in the NVS series, is set up with a range payload in the C-band and a navigation payload in the L1, L5, and S bands.
It has a lift-off mass of 2250 kg and a power handling capacity of about 3 kW when configured on the standard I-2K bus platform
It will take the place of IRNSS-1E at 111.75ºE. For accurate time estimates, NVS-02 combines indigenous and procured atomic clocks.

ISRO has set up a regional navigation satellite system dubbed Navigation with Indian Constellation (NavIC) to satisfy the country’s positioning, navigation, and timing needs.
The Indian Regional Navigation Satellite System (IRNSS) was the previous name of NavIC.
It is designed to provide accurate Position, Velocity, and Timing (PVT) service to users in India as well as to regions extending about 1500 km beyond the Indian landmass.
The seven satellites of the NavIC constellation and the ground station network run around the clock 24 x 7.
The constellation’s four satellites are positioned in inclined geosynchronous orbit with equatorial crossings of 55°E and 111.75°E, respectively, with an inclination of 29° (two satellites in each plane), while the three satellites are positioned in geostationary orbit at 32.5°E, 83°E, and 129.5°E.
The control centre, precision timing facility, range and integrity monitoring stations, two-way ranging stations, and other components make up the ground network.