ISRO on Friday announced that the fourth edition of the PSLV Orbital platform Experiment Module, the repurposed spent upper stage of the PSLV vehicle used for the space docking experiment mission, has successfully completed 1,000 orbits on March 4.
The PSLV-C60 Mission was launched on Dec. 30, 2024, and POEM-4 began its operations subsequent to the successful injection of the SPADEX spacecraft, it stated.
In a statement, ISRO said, "POEM-4 was configured as a three-axis stabilised platform that carried 24 payloads including 10 payloads from Non-Governmental Entities (NGEs) and 14 payloads from ISRO. All the payloads including those from NGEs have completed the intended experiments in orbit."
According to ISRO, POEM-4 carried out experiments in space robotics, germination of seeds and growth of bacterium in microgravity, green propulsion, laser ignition of pyro thrusters, amateur radio transmission and advanced sensors.
A space start-up also tested the uplinking and execution of an AI model as part of an AI lab in space.
"The POEM-4 avionics system also validated a Mission Management Computer based on a 'Made-in-India' 32-bit processor, Vikram3201, with a custom architecture developed by ISRO along with the use of a Nano star sensor for the first time to aid the navigation system," it stated.
The platform utilised a reaction wheel-based stabilisation system for attitude control, along with cold gas thrusters that extended the module's orbital life by at least 45 days compared to previous POEM missions, the space agency stated.
POEM-4 carried the highest number of payloads among all POEM missions so far, reaffirming its versatility as a cost-effective experimental platform for diverse payloads, the statement added.
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