Indian Space Research Organization (ISRO) scientists on Friday kicked off the countdown for the launch of the Earth observation satellite – Oceansat – and eight other client satellites on a PSLV-C54 rocket from the spaceport from Sriharikota on Saturday.
The 25:30 countdown to the 56th flight of the Polar Satellite Launch Vehicle (PSLV), in its extended version (PSLV-XL), began at 10:26 a.m. today for the scheduled liftoff at 11:56 a.m. Saturday from the first launch pad at the Satish Dhawan Space Center, Sriharikota, 115 km from Chennai.
The main payload of the rocket is an Oceansat which would be separated in orbit 1 while the other eight nano-satellites would be placed in different orbits according to the customer’s needs (in the sun-synchronous polar orbits).
Including the main payload, nine satellites would be superimposed on the 44.4 meter tall PSLV-C54 which has a takeoff weight of 321 tonnes. This is also the 24th flight of the PSLV-XL version.
The mission would be one of the longest undertaken by ISRO scientists who would commit the rocket to change orbit using orbit changing thrusters (OCTs) used in the PSLV-C54 launch vehicle. The separation of the Earth observation satellite should take place in orbit-1 while the passenger payloads would be separated in orbit-2.
The Earth observation satellite should be placed after reaching an altitude of about 742 km about 20 minutes after lift-off.
After primary satellite separation, the vehicle would be lowered to an altitude of 516 km for placement of the first passenger satellite. The final payload separation is expected to take place at an altitude of 528 km, ISRO said.
The Earth observation satellite-6 is the third generation satellite in the Oceansat series. This is to provide continuity services from the Oceansat-2 spacecraft with improved payload specifications as well as application areas. The objective of the mission is to provide continuity of ocean color and wind vector data to support operational applications.
Customer payloads include ISRO Nano Satellite-2 for Bhutan (INS-2B) which is said to have two payloads, namely NanoMx and APRS-Digipeter. NanoMx is a multispectral optical imaging payload developed by the Space Applications Center, while the APRS-Digipeter payload is jointly developed by the Department of Information Technology and Telecom, Bhutan, and UR Rao Satellite Center, Bengaluru.
The “Anand” satellite developed by Pixxel is a technology demonstrator to demonstrate the capabilities and commercial applications of the miniature Earth observation camera for observation using a micro-satellite in low Earth orbit.
The ‘Thybolt’ (two satellites) is from another space start-up, Dhruva Space, while Astrocast is a technology demonstration satellite for the Internet of Things as a payload from Spaceflight, USA d ‘America.
(Except for the title, this story has not been edited by NDTV staff and is published from a syndicated feed.)
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