Countdown starts for PSLV-C51

Chennai: In its first mission this year and the first dedicated commercial mission for the newly formed NewSpace India Limited (NSIL), PSLV-C51 will launch the 637 kg Brazilian satellite Amazonia-1 and 18-co-passenger satellites from the SDSC SHAR Rage, Sriharikota, on 28 February.

The launch will take place at 1024 hrs from the First Launch Pad. ISRO sources said the launch rehearsal of PSLV-C51 was completed.

Prime Minister Narendra Modi’s engraved picture on a co-passenger satellite and sending Bhagavad Gita on-board in electronic format are some of the notable aspects in the launch.

After the Launch Authorisation Board cleared the mission, the countdown for the launch would begin on Saturday during which propellant filling operations would be taken up in the 44.4 m tall four-stage vehicle.

In this mission, the fourth stage engine would be cut off and restarted twice. The entire mission would last for about two hours.

About 17 minutes after the launch, the fourth stage engine would be cut off following which Amazonia-1 would get separated.

About 44 minutes later, the fourth stage engine would be restarted and cut off after nine seconds, before restarting it for the second time 30 minutes later when the co-passenger satellites would get separated and injected into the Polar Sun Synchronous Orbit.

ISRO would be using the ‘DL’ variant of PSLV equipped with two solid strap-on boosters for this mission.

This would be the first launch of 2021, 39th from the First Launch Pad, 78th Launch Vehicle Mission from SDSC SHAR, 53rd flight of PSLV, third flight of PSLV-DL and the first ‘dedicated PSLV commercial mission for NSIL being undertaken under a commercial agreement the Spaceflight Ic. USA.

Amazonia-1 is the optical earth observation satellite of National Institute for Space Research (INPE), Brazil.

This is the first satellite which is completely designed, integrated, tested and operated by INPE. It has a life span of four years.

The Amazonia-1 mission would further strengthen the existing structure by providing remote sensing data to users for monitoring, deforestation in the Amazon region and analysis of diversified agriculture across the Brazilian territory.

The Indian co-passenger satellites are Satish Dhawan SAT (SDSAT) and UNITYsat.

The commercial co-passengers satellites are India’s SindhuNetra and SAI-1 NanoConnect-2 of USA–both for technology demonstration –and 12 Space BEEs satellites from USA for two-way satellite communications and data relay.


NT Bureau