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Lunar orbit - Shanmugam IAS academy in coimbatore
Lunar orbit

CRUCIAL ORBIT MANOEUVRE

What’s in news?

The moon-bound Chandrayaan-2 spacecraft underwent a crucial orbit manoeuvre, announced the Indian Space Research Organisation (ISRO). 

Key data’s:

  • ISRO was succeeded in placing the spacecraft in the Lunar orbit.
  • It was carried out using the onboard propulsion system and the spacecraft is now at 114 km x 18072 km orbit.
  • The mission control of ISRO, use the orbit manoeuvre to provide the enough thrust which gives the enough velocity to the spacecraft and makes the spacecraft to rise in its orbits.
  • The reverse process will be used to make the spacecraft down the orbit. When the thrust was lowered, the velocity will be reduced. When the velocity reduced the orbit of the spacecraft will get down.
  • When it reaches in the ambit of Gravitational force of the Moon, the spacecraft will automatically enter into the lunar orbit.
  • Chandrayaan-2 would also provide inputs to US-based National Aeronautics and Space Administration (NASA) for Artemis — its upcoming manned moon mission to the south pole of the moon.

Lander Vikram:

  • The lander Vikram will separate from the Orbiter and perform complex braking maneuvers.
  • It is expected to soft-land on the South Pole of the moon on September 7.
  • But the landing near the South Pole would be critical, as countries across the world are vying with each other to fly their flags at the site.
  • ISRO is using a new technology for soft landing using the five thrusters of the Lander for throttling the engine onboard
  • ISRO has also upgraded the sensor characterization onboard and made the module more autonomous to ensure less ground control to avoid any false decisions. This lesson was learnt from the Israel’s failed moon mission this April.

Lunar dust:

  • Lunar dust is another major concern as it could cover the Lander and impair its functions.
  • To avoid this, scientists have automated the system to switch off all the four thrusters during landing with only the central thrusters on. 

Lunar Orbit:

  • Lunar orbit is the orbit of an object around the Moon.
  • Also known as a selenocentric orbit.

 

Links to note:

https://www.iasipstnpsc.in/chandrayaan-2-will-carry-14-indian-payloads/

https://www.thehindu.com/sci-tech/science/chandrayaan-2-successfully-inserted-into-lunar-orbit/article29169247.ece

https://www.livemint.com/news/india/the-90-degree-challenge-for-chandrayaan-2-1566306672265.html

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