Liquid Apogee Motor (LAM)

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Liquid Apogee Motor (LAM) Blog Image


For the Aditya-L1 mission, ISRO will be using Liquid Apogee Motor (LAM) identical to the one used in the Mars and moon missions.

 About Liquid Apogee Motor: 

  • It is a small but powerful engine going by the acronym ‘LAM’ will have a critical role to play in the Indian Space Research Organisation’s (ISRO) upcoming Aditya-L1 mission meant to study the sun.
  • The successful operation of LAM is vital to ISRO’s plans to place the Aditya spacecraft in a halo orbit at Lagrangian point L1.
  • Such engines are used for orbital adjustment manoeuvres of satellites/spacecraft in orbit.
  • It is developed by the Liquid Propulsion Systems Centre (LPSC), the ISRO centre for liquid and cryogenic propulsion in Thiruvananthapuram.


Key facts about Aditya-L1 mission

  • It is the first space-based Indian mission to study the Sun.
  • It will be launched by the PSLV-XL launch vehicle.
  • The spacecraft shall be placed in a halo orbit around the Lagrange point 1 (L1) of the Sun-Earth system, which is about 1.5 million km from the Earth. 
  • A satellite placed in the halo orbit around the L1 point has the major advantage of continuously viewing the Sun without any occultation/eclipses. 
  • This will provide a greater advantage in observing solar activities and their effect on space weather in real-time.
  • The spacecraft carries seven payloads to observe the photospherechromosphere and the outermost layers of the Sun (the corona) using electromagnetic and particle and magnetic field detectors.


Source: Smooth operation of Liquid Apogee Motor engine critical to Aditya-L1 success