PSLV Orbital Experimental Module (POEM)

PSLV Orbital Experimental Module (POEM):

Besides placing three Singaporean satellites in precise orbit, the Indian Space Research Organisation (ISRO) also achieved the feat of successfully launching the PSLV Orbital Experimental Module or ‘POEM’.

  • The PSLV Orbital Experimental Module is a platform that will help perform in-orbit experiments using the final, and otherwise discarded, stage of ISRO’s workhorse rocket, the Polar Satellite Launch Vehicle (PSLV).
  • The PSLV is a four-stage rocket where the first three spent stages fall back into the ocean, and the final stage (PS4) — after launching the satellite into orbit — ends up as space junk.
  • However, in PSLV-C53 mission, the spent final stage will be utilised as a “stabilised platform” to perform experiments.
    POEM is carrying six payloads, including two from Indian space start-ups Digantara and Dhruva Space.
  • According to ISRO, POEM has a dedicated Navigation Guidance and Control (NGC) system for attitude stabilisation, which stands for controlling the orientation of any aerospace vehicle within permitted limits.
  • The NGC will act as the platform’s brain to stabilize it with specified accuracy.
  • POEM will derive its power from solar panels mounted around the PS4 tank, and a Li-Ion battery. It will navigate using “four sun sensors, a magnetometer, gyros & NavIC.

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