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Home / Science / Vikram crashes at high speed and is long dead. | India news

Vikram crashes at high speed and is long dead. | India news



CHENNAI: While the rest of India waited two weeks for the awakening of Chandrayaan 2 lander Vikram, the best Isro scientists knew the lunar ship had died in the early hours of 7 September in the crash is inclined to believe that an error in the Automatic Landing Program (ALP) caused the accident.
Insiders from Isro told TOI that the 1.471 kg Vikram had crashed on the lunar surface at a speed of more than 200 km / h with the 27 kg Pragyan, and that the on-board systems probably did not survive the impact. Scientists who saw a picture of Vikram after the crash landing said the lander was either upside down or tilted but not damaged beyond recognition.
"What I saw appeared like a shadow of Vikram," said a scientist who analyzed the image. "It was definitely not on its feet. At least two of the four legs protruded. It was either upside down or tilted.
Another scientist, who was privy to troubleshooting, said that Vikram had run out of control over 1
0km during the last descent and lost contact with mission control when he was about 330m above the lunar surface (not 2.1km as Isro said before). "If it was upside down, the engines that were supposed to act as brakes acted as accelerators, hitting the lunar surface at more than 200 km / h, maybe even faster," he said.
Another Isro source said even at this altitude, Vikram could have escaped without much damage if it had been upright and the engines had lowered the speed to 10 m / s (36 km / h). "If it had crashed on its legs, the" shoes "would have looked like a shock absorber," he said. "However, since no signal was received from Vikram, the on-board computer and other systems must have been damaged."
Two scientists said that the landing program created by a team from the UR Rao Satellite Center may have been faulty. Bengaluru. "Teams go through the program. We need to see if it was properly checked before the execution, "said a scientist who did not want to be named. The software program was designed to direct the various altitude and speed control systems to the surface during the 15-minute descent of Vikram from the 30-kilometer orbit of the Moon to ensure a smooth landing.
The official Waiting for the Vikram Resurgence ends Friday when Moon Day ends (14 Earth Days). The lander and the rover were designed for those 14 earth days, after which the systems would have shut down anyway during the long, cold moonlit night, when the temperature dropped to minus 183 degrees Celsius.
The soft landing has also remained a challenge for pioneers of lunar research, including the US, Russia, and China, as landered landmasters, often asymmetric with shifts in their center of gravity, had to be brought from zero to high speed near the bottom of the lunar surface upright.

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