Chinese Space Program

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随时随地发现新鲜事！微博带你欣赏世界上每一个精彩瞬间，了解每一个幕后故事。分享你想表达的，让全世界都能听到你的心声！
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微博

随时随地发现新鲜事！微博带你欣赏世界上每一个精彩瞬间，了解每一个幕后故事。分享你想表达的，让全世界都能听到你的心声！
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Flyaway said:
What do people think of China’s possible approach to creating a reusable launcher that of revamping an existing booster rather than going for a clean sheet design like Space X?
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well ，I make a mistake，there is a plan to replace LOX engine for the Long March 2D rocket

Sina Visitor System

weibo.com
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China is planning an ambitious two-for-one shot to the outer planets with a pair of spacecraft to launch for Jupiter and Uranus around 2030.

The mission will be named Tianwen 4 and will see a larger probe destined for Jupiter and smaller spacecraft to be sent to make a flyby of distant Uranus.
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www.space.com

China wants to probe Uranus and Jupiter with 2 spacecraft on one rocket

Tianwen 4 to target Jovian moon Callisto and ice giant flyby.
www.space.com www.space.com

Tianwen-4: China to launch a combined pair spacecraft towards Jupiter via Venus and Earth flybys. One will study the Jovian system and enter orbit around Callisto, the smaller will use a gravity assist to head for a flyby of Uranus. Launch ~ 2030. Asteroid flyby also included.
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https://twitter.com/x/status/1572711299942940672
View: https://twitter.com/AJ_FI/status/1572711299942940672
 
China 's New Space Timetable
Wu Weiren ( Chief Designer of China Lunar Exploration Project)

In the first stage, by 2035, landmark achievements will be made in heavy carrier rockets, the construction of a new generation of space infrastructure, the construction of space stations, the lunar exploration project, manned lunar landing and planetary exploration.

In the second stage, by 2045, landmark achievements will be made in manned landing on Mars, international lunar research station, interplanetary crossing, space-to-space transportation, etc., becoming one of the leaders in the world 's space development.
 
China’s mystery spaceplane has now been in orbit for over 80 days and recently raised the perigee of its orbit.

spacenews.com

China’s spaceplane raises orbit and national funding - SpaceNews

A spaceplane launched by China in August has performed an orbit-raising maneuver and recently secured new funding to promote new modes of transportation.
spacenews.com spacenews.com
 
https://twitter.com/x/status/1584763615722508288
View: https://twitter.com/cnsawatcher/status/1584763615722508288


Ready to go. Long March 5B (CZ5B) Y4 rocket, which carries Mengtian laboratory cabin module, has been rolled out from VAB to the launch pad at Wenchang launch center, Hainan. It’ll send Mengtian on October 31 to Tiangong Space Station (CSS). Source: share.api.weibo.cn/share/34355117…
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https://twitter.com/x/status/1584920727458705408
View: https://twitter.com/wulei2020/status/1584920727458705408


Have you ever seen how a huge rocket is moved from its assembling building to the launch pad? Today I was at the Wenchang Spacecraft Launch site and witnessed how Mengtian lab module and Long March 5B rocket were moved to the launch pad.
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https://twitter.com/x/status/1586706307850981376
View: https://twitter.com/cnspaceflight/status/1586706307850981376


Introducing Mengtian Laboratory Module
17.9m long
4m wide
~23 tonnes
~110 m3 pressurized volume
~32 m3 habitable
4 sub-modules: Pressurized, Payloads, Cargo airlock and Service Module
not less than 10 years of lifetime and can be extended
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Oh wait, one more very cool thing: micro/nanosats deploying system through the robotic arm.

Mengtian also has 37 standard exposed payload adapters. See the quoted tweet for more info of the research facilities of China Space Station..
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https://twitter.com/x/status/1586716325488971776
View: https://twitter.com/CNSpaceflight/status/1586716325488971776
 
China launched its final space station module. Well congrats, but it was done on a Long March 5B rocket again, sooo...
Time for uncontrolled re-entry bingo again! Where will it crash? Nobody knows!
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https://twitter.com/x/status/1587007047937171458
View: https://twitter.com/KamepinUa/status/1587007047937171458

Recalling the score for the three previous missions:

Y3 - debris landed in Borneo, some within 100m of a village
Y2 - reentered over Indian Ocean
Y1 - debris landed in Cote d'Ivoire, damaging buildings in several villages
This mission, Y4: we'll see in a week or so.
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https://twitter.com/x/status/1586987858904186880
View: https://twitter.com/planet4589/status/1586987858904186880
 
https://twitter.com/x/status/1587853654190686208
View: https://twitter.com/sciguyspace/status/1587853654190686208


Ted Muelhaupt, of @AerospaceCorp, says that the Long March 5 rocket core is the size of two semi-trailer trucks, and 10 to 40 percent of the dry mass is expected to survive reentry. China's four LM-5s are the 3rd, 4th, 5th, and 6th largest uncontrolled reentries ever.
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1&2 are the Skylab and Salyut 7 re-entries.

https://twitter.com/x/status/1587848989403189249
View: https://twitter.com/aerospacecorp/status/1587848989403189249


Our latest prediction for #CZ5B rocket body reentry is:
05 Nov 2022 05:10 UTC ± 13 hours
Reentry will be along one of the ground tracks shown here. It is still too early to determine a meaningful debris footprint. Follow here for updates: aerospace.org/reentries/cz-5…
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https://twitter.com/x/status/1587858672373403654
View: https://twitter.com/jeff_foust/status/1587858672373403654


In an @AerospaceCorp briefing, Ted Muelhaupt says the risk of any casualties from the upcoming CZ-5B renter is between 1:1000 and 1:230, far worse than the internationally accepted threshold of 1:10,000. But the risk to you individually, though, is very small: 6 in 10 trillion.
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https://twitter.com/x/status/1587863768570023937
View: https://twitter.com/aerospacecorp/status/1587863768570023937


Casualty in this context means any injury, small to fatal. The risk is still not zero and is greater than internationally accepted threshold (as @jeff_foust mentioned), but you also have a better chance of winning the lottery.
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Check out this amazing imagery we just snapped of the Long March 5B rocket body currently hurtling uncontrolled back to earth. My job is pretty cool
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https://twitter.com/x/status/1587967423864791040
View: https://twitter.com/AnnieHandmer/status/1587967423864791040

https://twitter.com/x/status/1587935951388831744
View: https://twitter.com/aerospacecorp/status/1587935951388831744


Our latest prediction for #CZ5B rocket body reentry is:
04 Nov 2022 23:17 UTC ± 10 hours
Reentry will be along one of the ground tracks shown here. It is still too early to determine a meaningful debris footprint. Follow here for updates:  aerospace.org/reentries/cz-5…
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https://twitter.com/x/status/1588532777313394688
View: https://twitter.com/nasaspaceflight/status/1588532777313394688


NASA Administrator Bill Nelson released this statement Friday regarding debris from the Chinese Long March 5B rocket:
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Once again, the People's Republic of China is taking unnecessary risks with the uncontrolled rocket stage reentry of their Long March 5B rocket stage. They did not share specific trajectory information which is needed to predict landing zones and reduce risk. This is the PRC's fourth uncontrolled reentry since May 2020, and each of these reentries have been the largest in last 30 years. It is critical that all spacefaring nations are responsible and transparent in their space activities and follow established best practices, especially, for the uncontrolled reentry of a large rocket body debris - debris that could very well result in major damage or loss of life.
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