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"However, there was uncertainty about the possibility of these to resume functioning after facing extremely low temperatures of the lunar night which can go as
by throwbadubadu 3y ago
"However, there was uncertainty about the possibility of these to resume functioning after facing extremely low temperatures of the lunar night which can go as low as -200 degrees Celsius.
Moreover, its battery needed to remain at a certain level to be able to recharge again with the solar dawn."
Naive guy would think that alone can and would be extensively tested on earth?
- toast0 3y ago> Naive guy would think that alone can and would be extensively tested on earth? The article says the probe achieved its objectives in the first active period. This attempted wakeup was for bonus time.
- NortySpock 3y agoAnd it would have been designed to achieve all those objectives in the 14-day lunar sunshine period. You could design a car that runs for a billion miles, but no-one could afford it. You pick a reasonable lifespan for a project and target your specifications around that.
- pixl97 3y agoYa, and the Indian mission was already one of the lowest budget successful missions there has been. The US is one of the few countries that can spend billions on missions where the lander may last months/years longer than expected.
- warkdarrior 3y ago[flagged]
- moralestapia 3y agoThis is a troll post, right?
- flashgordon 3y agoWe probably found it cheaper to build it, send it, test it than build a lab to get to -200°c :)
- Halfwhit 3y agoI too like to live dangerously and test in production
- AwaAwa 3y agoHopefully you never get to peek behind the scenes of much of the world's running infrastructure.
- xorbax 3y agoYou have to build the thing and test every possible problem before you build it again and do it for real We all know everyone is perfectly willing to pay and wait for thorough testing so it works perfectly Nobody would ever underfund something and then complain about how the final product didn't produce 150% of what was promised
- toast0 3y agoEveryone tests in production. Some people also have additional environments to test in.
- brushinator 3y agoAnd yet the lunar lander and the astronauts on the moon did just fine. Did the lunar lander and the body suits have heaters?
- jackmott42 3y agoThey didn't last 14 days or try to survive the lunar night, and we spent a rather large % of our GDP on the project, while India's landing was an order of magnitude cheaper than any previous moon lander.
- kjkjadksj 3y agoThey did, but they also left before the lunar night.
- evgen 3y agoThe humans inside the suits and lander also provided some useful heat. For most spacecraft, once you put humans into them the problem changes from conserving heat to getting rid of it.
- brushinator 3y agoOk so at 120 degrees C got it
- NamTaf 3y agoKinda crazy what effect different albedos have, isn’t it? :)
- seabass-labrax 3y agoIf you haven't already, I would highly recommend watching 'Apollo 13'[1]. On a technical basis it is really accurate to the real-life events. The astronauts having to shut down the lunar lander's (LEM) heating system comes into the story about half way through. It's one of my all-time favourite films! [1]: https://www.imdb.com/title/tt0112384/ https://www.imdb.com/title/tt0112384/