ISRO successfully pulled off the controlled atmospheric re-entry of its decommissioned climate research satellite Megha-Tropiques-1

Current Affairs

  • The controlled re-entry experiment for the decommissioned Megha-Tropiques-1 (MT-1) was carried out successfully on March 7, 2023.
  • The satellite was launched on October 12, 2011, as a collaborative effort between ISRO and the French space agency CNES for carrying out tropical weather and climate studies.
  • Since August 2022, the satellite’s perigee was progressively lowered through a series of 20 manoeuvres spending about 120 kg of fuel.
  • Multiple Manoeuvres including the final de-boost strategy were designed after taking into consideration several constraints, including visibility of the re-entry trace over ground stations, ground impact within the targeted zone, and allowable operating conditions of subsystems, especially the maximum deliverable thrust and the maximum firing duration constraint on thrusters.
  • All manoeuvre plans were screened to ensure that there would be no post manoeuvre close approaches with other space objects, especially with the crewed space stations like International Space Stations and the Chinese Space Station.
  • ISRO has selected an uninhabited area in the Pacific Ocean as the target re-entry area for MT-1.

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