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To: jonrick46

From the article:

ground.

A Long March 5B rocket lifts off from the Wenchang launch center May 5. Credit: CASC
Space agencies, launch operators and satellite companies often try to guide spent rocket stages and aging satellites toward re-entries over the ocean, reducing the risk that debris could fall over a populated area.

In the case of the Long March 5B, the core stage delivered its payload — a prototype Chinese crew capsule — into a low-altitude orbit. The heavy-lift Long March 5B is designed to directly inject payloads into low Earth orbit without an upper stage, meaning the core stage also ends up in orbit, instead of immediately falling back to Earth in a predetermined downrange drop zone.

China plans to launch at least three more Long March 5B rockets in 2021 and 2022 with modules for the country’s planned space station, so more uncontrolled rocket re-entries are expected in the next couple of years.

After the Tiangong 1 space lab re-entered the atmosphere unguided in 2018, China performed a controlled de-orbit of the follow-on Tiangong 2 spacecraft in 2019.

The most massive human-made object to re-enter the atmosphere from orbit was Russia’s Mir space station, which made a guided re-entry over the South Pacific Ocean in 2001. NASA and Russia’s space agency have plans to eventually execute a controlled re-entry of the International Space Station at the end of its service life.

China doesn’t care where their crap lands.


8 posted on 05/09/2020 11:08:49 PM PDT by datura
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To: datura

In the case of the Long March 5B, the core stage delivered its payload — a prototype Chinese crew capsule — into a low-altitude orbit. The heavy-lift Long March 5B is designed to directly inject payloads into low Earth orbit without an upper stage, meaning the core stage also ends up in orbit, instead of immediately falling back to Earth in a predetermined downrange drop zone.

China plans to launch at least three more Long March 5B rockets in 2021 and 2022 with modules for the country’s planned space station, so more uncontrolled rocket re-entries are expected in the next couple of years.

...

So the core is actually a second stage. The side boosters are the first stage.

Responsible countries and corporations keep enough propellant on their second stages, so their reentries can be controlled. China needs to be held accountable, as usual.


17 posted on 05/10/2020 5:01:04 AM PDT by Moonman62 (http://www.freerepublic.com/~moonman62/)
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To: datura

The most massive human-made object to re-enter the atmosphere from orbit was Russia’s Mir space station, which made a guided re-entry over the South Pacific Ocean in 2001. NASA and Russia’s space agency have plans to eventually execute a controlled re-entry of the International Space Station at the end of its service life.

...

The most expensive man made object ever built will end up as scrap at the bottom of the ocean. Thank you Big Government.


18 posted on 05/10/2020 5:04:14 AM PDT by Moonman62 (http://www.freerepublic.com/~moonman62/)
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