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Decoding Chandrayaan: Lunar Exploration



  Aug 26, 2023

Understanding Chandrayaan Moon Missions


Chandrayaan-3 learns from Chandrayaan-2 Mistakes

What happened with Chandrayaan-2?

Chandrayaan-2's lander, named Vikram, was attempting to land on the Moon. During the landing process, it went through three main stages:
 
Rough breaking: The lander slows down as it gets closer to the moon, starting from 30 km above the surface.
 
Camera coasting: The onboard camera directs the lander to the landing site.
 
Fine-breaking: The lander finalizes its landing sequence.
 
However, a valve malfunctioned and sent too much fuel into the engines. This caused the lander to tilt and rotate uncontrollably, eventually leading to it crashing 459 meters from its intended landing spot.
 

How does Chandrayaan-3 plan to succeed?

ISRO, the organization behind the mission, identified the issues from Chandrayaan-2 and made significant corrections:
 
Engine adjustments: They refined the engine's control system to ensure the right amount of thrust.
 
Rotation enhancement: The lander can now rotate faster, allowing it to adjust its position more efficiently.
 
Additional tools: A new device, the "laser doppler velocimeter," will measure fuel flow rates to ensure the right amount goes into the engines.
 
Backup plans: ISRO included alternate mission paths and expanded landing areas, ensuring the lander can touch down safely even if things don't go perfectly.
 
In simple terms, ISRO learned from the mistakes of Chandrayaan-2 and made sure Chandrayaan-3 has the best chance of successfully landing on the Moon


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