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| Topic: Chinese Meteor | |
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From the Times:
China launched it's Long March Rocket on April 28, with the job of putting the 22-ton, 16.6 m core module of China’s new Tianhe space station into orbit. While the launch was flawless—at least so far as doing its principal job which was getting the Tianhe to orbit ....
What is worrying is the follow-through ..., the expected crash of the launch rocket anywhere on earth, tomorrow, May 8th. When spacefaring nations send a payload to orbit and jettison a spent first rocket stage along the way, they typically don’t let that stage fly too high or too fast, which would allow it to reach orbit. Rather, they keep it on a parabolic, suborbital trajectory. That means that when it’s done with its work, it falls immediately back to Earth in a predictable way and in an unpopulated area. In the case of rockets launched from Cape Canaveral, the dumping ground is the nearby Atlantic. In the case of China, which launches its rockets from the Wenchang Launch Center on the southern island province of Hainan, the Pacific is typically the junk yard. But the Long March 5B didn’t fly that way. Instead, the core stage made it all the way to orbit along with the Tianhe module. Tianhe has its own guidance system to keep it in a high, stable orbit. But the spent Long March core stage was left behind in a much more wobbly (and unsustainable) orbit, and now it’s destined to fall back to Earth. |
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Wow. nice. well hopefully it doesn't fall on anyone.
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thank goodness I am too far up north to worry about that .... so I only worry about the sky falling on my head!!!
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What didn't burn up on re-entry landed in the ocean West of Maldives. Happy endings.
https://www.cnbc.com/2021/05/09/china-says-rocket-debris-landed-in-indian-ocean-west-of-maldives.html |
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What didn't burn up on re-entry landed in the ocean West of Maldives. Happy endings. 
The shell (20 tons) entered earth's atmosphere over New Jersey New Jersey: 40 deg, - 75 deg (Latitude, Longitude) Maldives: 2 deg, 74 deg i.e., halfway around the planet: Atlantic, Africa to I Ocean. Doesn't make sense, cause designated area for rockets launched from Asia, is the Pacific. (For US, it's the Atlantic). Moreover the shell was burning and we don't know the extent of the debris. From the pictures of rocket burn, (NASA) my estimate of the largest un-burnt piece is over 10 tons. Chinese response to NASA and media criticism is not encouraging. With several more launches planned till end of 2022 - 
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Made in China....anyone resonate?
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Edited by
jaish
on
Tue 05/11/21 09:22 PM
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Made in China....anyone resonate?g Interesting, because the way Chinese work: 1. Products should be economically designed to sell on price (& mass production). I don't think one can get any item cheaper than Chinese, from plastic lighters, to heavy power projects and tomorrow, e-cars. (Personally speaking: India has a few Chinese power plants (SEPCO) & my company was once their site contractors. The Chinese foremen were top quality. Although the Chinese workers were better cared, they could not withstand working under the Indian heat & humidity - and that's why we were contracted.) 2. With reference to rockets, they contain Russian cryogenic engines (thrust er that can work at -50 deg C and below! So one may speculate that Chinese Space Agency (CSA) may have deliberately released the first stage rocket to check how far into space as it could go - a trial to determine why not modify the single stage to go as far - to orbit the moon. (Russian rockets are expensive and one of the reasons International Space Station is being decommissioned is because Russia has been charging exorbitantly to ferry astronauts.) So what we may be seeing is beginning of a second space race - between CSA and Elon Musk's Space X. |
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