Home / NewTech / Lander Chandrayaan-2-Rover may have partially survived the landing, says the engineer who discovered the rubble of the Vikram lander – Technology News, Firstpost

Lander Chandrayaan-2-Rover may have partially survived the landing, says the engineer who discovered the rubble of the Vikram lander – Technology News, Firstpost



A mechanical engineer from Chennai, Shanmuga Subramanian, who discovered debris from the Chandrayaan 2 lander in images from NASA in 201

9, has now sent a round of emails to the Indian space research organization, NASA, and the media, claiming the rover probably survived the hardship Landing. His claims were based on images from NASA’s Lunar Reconnaissance Orbiter in May 2020.

Subramanian claims the Pragyan rover has left traces, suggesting that after landing it was at least a few meters away from the Vikram lander, according to its email and a Twitter thread to share his theory. Subramanian had discovered the rubble of the Vikram lander in pictures of the overhead passport of the NASA Lunar Reconnaissance Orbiter (LRO) of the suspected crash site of the Chandrayaan 2 lander.

“Previous images before the impact show nothing around … while the images after the impact show some objects …” he said. “We found debris that may have come from the other payloads … engines and skeleton landers with the rover would have jumped off the landing and landed … The rover was designed to come out automatically after 3 hours,” he added.

However, recent pictures of the crash site show that the rover may have survived, Subramanian claims.

“Pictures until January 4th [made public in May]I think Pragyan may be intact and rolled out a few feet from the lander, “he said told The times of India. “We need to know how the rover moved and I hope ISRO can confirm that.”

To Subramanian’s results, the ISRO chairman replied that they hadn’t heard from NASA about the images and were reviewing the data Subramanian sent them.

“We haven’t heard from NASA on this issue yet. But yes, the person who previously identified Vikram Debris emailed us about it. Our specialists are investigating the matter and we can’t say anything right now.” Dr. K Sivan told TOI.

“We need to analyze and see what may have happened. There is nothing concrete now,” added Sivan.

    Chandrayaan-2 Rover, Lander may have partially survived the landing, says the engineer who discovered the Vikram Lander debris

Ejecting Vikram Lander is the LRO camera. Picture: NASA

Based on his own investigation, Subramanian suggested that the movement of the rover in the images could be explained by a one-sided interruption in communication between the lander and the ground stations. While ISRO was unable to communicate with the lander prior to the planned soft landing, the lander may have forwarded some of the many commands that ISRO sent to test the communication and receive a response from the Lander rover duo after the crash .

If events had developed in this way, ISRO might not have known that the communication was successful, Subramanian suggests.

NASA also has shared that With the exception of some regions, the South Pole is not exposed to sunlight all year round. This is due to the inclination of the moon and is similar to the pattern of sunlight at the south pole of the earth, where the poles remain either well or poorly lit for months.

This along with the long shadows cast by structures At the south lunar pole, it was likely that NASA could not see the remnants of the land in the LRO images of September 17 and November 18 that the space agency had said. Subramanian, however claims the debris is clearly visible in LRO images from January 4 and March 14, 2020.

Also read: How NASA’s LRO, with the support of the Chennai engineer, found the ISRO’s Vikram lander

An illustration from Chandrayaan 2s Lander Vikram.  Picture: ISRO

An illustration from Chandrayaan 2s Lander Vikram. Picture: ISRO

ISRO’s investigation after the crash

Shortly after the fateful landing on September 7, ISRO said that the ground stations had lost communication with Vikram (and the Rover Praygan hidden therein) a few minutes before the planned landing on the lunar surface.

Since then, ISRO has stated that it has made “every possible effort” to connect to the lander, but said that this was temporary these operations suspended until late September after dark rose on the landing site.

“Now it is not possible [since] It’s night at our landing site … There may be no electricity, “said K Sivan told PTI on October 1st, 2019. “We will endeavor to do so [during day-time on lunar surface] also.”

ISRO had formed a national committee Consisting of academics and agency experts to analyze the cause of the loss of communication with the lander.

“The committee is working hard on this and their report will be available soon. I don’t think it will take longer than a month,” said the official.

In November 2019, ISRO spokesman Vivek Singh said in an interview that the results of the report will be published in parliament and are unlikely to be made public.

“The report is unlikely to be published, but the results will be published in Parliament. I can’t say anything other than what is written, “said Singh, according to a Hindustan Times report.

However, in a written update to Parliament on the Chandrayaan 2 mission on November 20, Minister of State of the Ministry of Space Jitendra Singh said that Vikram Lander was “hard landed” on the moon after a problem with his brake thrusters. This was ISRO’s last official landing update.

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