ISRO PSLV-C55 successfully launches two Singapore satellites into orbit

Soon after ISRO’s PSLV C55 rocket successfully placed two Singapore satellites– TeLEOS-2 and Lumelite-4 into orbits after a 2.19 pm liftoff, the scientists used PSLV Orbital Experimental Module-2 (POEM-2) as an orbital platform to carry out the scientific experiments through non-separating payloads carried by it.

Announcing the success of the satellite mission, ISRO Chairman S Somanath said “POEM is going to write some more poems” with seven payloads. The payloads belong to ISRO, Bellatrix, Dhruva Space and Indian Institute of Astrophysics. It has “deployable solar panel for the first time in the upper stage of a rocket.”

“That is another exciting thing to happen,” Somanath added. The payloads on POEM-2 would be powered by scientists to perform the operation. The platform’s solar panel would be deployed facing towards the Sun through a ground command.


The platform would ensure the deployed solar panel points towards the Sun optimally using appropriate sun pointing mode, which would increase the power generation capability. The power would be provided to payloads and avionic packages based on their requirements.

Saturday’s campaign by the scientists is the third time that the fourth stage has been used after satellite separations as a platform for experiments. The primary satellite TeLEOS-2 is a synthetic aperture radar satellite developed under partnership between Defence Science and Technology Agency (DSTA) representing the Government of Singapore and ST Engineering.

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It would be used to support the satellite image requirements of various agencies within the Government of Singapore. TeLEOS-2 carries a Synthetic Aperture Radar (SAR) payload. It would be used to provide all-weather day and night coverage and is capable of imaging at one metre full polarimetric resolution for Singapore.

The co-passenger satellite is Lumelite-4, co-developed by the Institute for Infocomm Research and Satellite TEchnology and Research Centre of the National University of Singapore. It is an advanced 12U satellite developed for the technological demonstration of the High-Performance Space-borne VHF data Exchange System (VDES).

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