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The Long March 5B Is Coming!
#1
The Long March 5B Is Coming!
Expected to fall out of orbit in the next several days, but no one knows where. I’m hoping a small, non-destructive chunk will land in our garden, because it would make one hell of a conversation piece.

Failing that, I’m hoping a large, highly destructive chunk lands on Eddie The Inconsiderate Bastard who lives on our street.

Boru
‘Let me never fall into the vulgar mistake of dreaming that I am persecuted whenever I am contradicted.’ Ralph Waldo Emerson
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#2
RE: The Long March 5B Is Coming!
(May 6, 2021 at 7:12 am)BrianSoddingBoru4 Wrote: Expected to fall out of orbit in the next several days, but no one knows where. I’m hoping a small, non-destructive chunk will land in our garden, because it would make one hell of a conversation piece.

Failing that, I’m hoping a large, highly destructive chunk lands on Eddie The Inconsiderate Bastard who lives on our street.

Boru

Perhaps it will land on my neighbours' bloody dog!
Dying to live, living to die.
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#3
RE: The Long March 5B Is Coming!
(May 6, 2021 at 7:15 am)The Valkyrie Wrote:
(May 6, 2021 at 7:12 am)BrianSoddingBoru4 Wrote: Expected to fall out of orbit in the next several days, but no one knows where. I’m hoping a small, non-destructive chunk will land in our garden, because it would make one hell of a conversation piece.

Failing that, I’m hoping a large, highly destructive chunk lands on Eddie The Inconsiderate Bastard who lives on our street.

Boru

Perhaps it will land on my neighbours' bloody dog!

It's expected to break up on re-entry, so maybe there will be enough bits to go round.

Boru
‘Let me never fall into the vulgar mistake of dreaming that I am persecuted whenever I am contradicted.’ Ralph Waldo Emerson
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#4
RE: The Long March 5B Is Coming!
It’s the core stage of the rocket.  The big cylindrical structure will likely disintegrate and burn up.   But it has 2 LOX/LH rocket engines that boosted it off the ground still attached.   These engines weigh several tons apiece, and must withstand rocket combustion temperatures and pressure during normal operation.  So I suspect big pieces of the engines will survive reentry and hit the ground.
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#5
RE: The Long March 5B Is Coming!
How widespread? There's a time confused rooster in my neighborhood that could use a thump on the head.
       I am the storm.                                                             
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#6
RE: The Long March 5B Is Coming!
(May 6, 2021 at 11:06 am)arewethereyet Wrote: How widespread?  There's a time confused rooster in my neighborhood that could use a thump on the head.

Early predictions range from north of Madrid, Spain to somewhere south of Wellington, NZ.

Boru
‘Let me never fall into the vulgar mistake of dreaming that I am persecuted whenever I am contradicted.’ Ralph Waldo Emerson
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#7
RE: The Long March 5B Is Coming!
(May 6, 2021 at 11:32 am)BrianSoddingBoru4 Wrote:
(May 6, 2021 at 11:06 am)arewethereyet Wrote: How widespread?  There's a time confused rooster in my neighborhood that could use a thump on the head.

Early predictions range from north of Madrid, Spain to somewhere south of Wellington, NZ.

Boru

Damnit - I'll have to bop that damn thing on the head myself.
       I am the storm.                                                             
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#8
RE: The Long March 5B Is Coming!
oKeep in mind the probability of your being hit by a piece from this rocket is on par with  your chances of being hit a piece falling off of an airplane during the same period.    if you don’t walk around in fear of being conked on the head by a part falling off of an airplane, it is irrational to make a big deal of the infinitesimal chance of being hit by a piece of this rocket.
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#9
RE: The Long March 5B Is Coming!
Quote:A May 4 update from the Aerospace Corporation predicts reentry will occur May 9 at 12:37 a.m. Eastern (04:37 Universal time), with a margin of error of plus or minus 28 hours.

Russian space agency Roscosmos also stated May 4 that its Automated Warning System on Hazardous Situations in Outer Space (ASPOS OKP) indicated that the Long March 5B was set for an uncontrolled reentry.

Calculations by Russian experts indicate a reentry window of 9:00 p.m. May 7 to 4:00 p.m. May 9 Eastern, with more refined predictions to follow in the coming days.

China has yet to comment on the status of the Long March 5B. The country is planning 10 more launches through 2022 of various spacecraft and launch vehicles to construct its three-module space station.  

China is currently preparing to send the Tianzhou-2 cargo spacecraft to Tianhe in the next few weeks using a Long March 7 rocket. A first crewed mission, Shenzhou-12, is expected to send three astronauts to the new orbital outpost in June.

Notably, two more launches of the Long March 5B are expected in 2022 to send the Wentian and Mengtian experiment modules to join Tianhe in orbit.

It is unknown if the China Academy of Launch Vehicle Technology (CALT), which designed and manufactures the Long March 5B, has planned alterations to the rocket or launch profile which would allow the core stage to either deorbit or fall to Earth on a ballistic trajectory.

The Long March 5B was designed specifically for launching modules for the Chinese space station into low Earth orbit. A test flight in 2020 also saw the core stage reach orbital velocity. That incident saw the stage reenter over the Atlantic Ocean with local reports suggesting debris from that 20-ton stage appears to have survived reentry and landed in the African nation of Côte d’Ivoire.

Space News: https://spacenews.com/chinese-rocket-sta...und-may-8/

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#10
RE: The Long March 5B Is Coming!
(May 6, 2021 at 10:53 am)Anomalocaris Wrote: It’s the core stage of the rocket.  The big cylindrical structure will likely disintegrate and burn up.   But it has 2 LOX/LH rocket engines that boosted it off the ground still attached.   These engines weigh several tons apiece, and must withstand rocket combustion temperatures and pressure during normal operation.  So I suspect big pieces of the engines will survive reentry and hit the ground.

Just as long as one is big enough to be an Eddie-flattener, we’re golden.

Boru
‘Let me never fall into the vulgar mistake of dreaming that I am persecuted whenever I am contradicted.’ Ralph Waldo Emerson
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