China's Space Program News Thread


taxiya

Colonel
Registered Member
A paper on the "thrust transmission structure" of China's upcoming superheavy rocket (a.k.a. the 921 rocket). The development is in full swing.

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My technical Chinese is very limited in this area, so I'm not able to translate the paper. It does however have an English abstract.





Forgive me to nitpick on you. :p In CASC's presentation and state media reporting, 921 is called 超大型(super large), compared to CZ-5 as 大型(large), CZ-9 as 重型(heavy). Super-heavy in Chinese would be translated as 超重型, which in CASC's term would be much heavier than CZ-9, I would expecting something at least LEO 200t and above.

The article is about the load baring structural design of the first stage. The design is compared with old design used by all CZ except CZ-4's upper stage (small). The old design distributes the force of the thrust to the tank wall through a mounting struct, the new design distributes the force to both the tank wall and the bulkhead. The new design (3310kg) saves 1 tonne of structural mass compared to the old (4330kg).

The photos in the article are of the static test article.
 

taxiya

Colonel
Registered Member
What functions does the antenna to?
I think they are for the GGSO and GEO Beidou satellites. So the guess is for communications. One likely possibility is the two-way text messaging with the mobile device, with a large antenna that size, the mobile device can be made small enough to carry around. The reason of mobile to GEO sat messaging is to make sure a device in any part of the world can communicate with station in China without relying on any other system.
 

Orthan

Junior Member
CZ-9 sized launchers may have a brighter future than people think. Orbital Solar Power Stations. 2040's? May even making a decent profit with a mature carbon trading market.
I dont think that orbital power stations will ever be economically feasible with the space launch technology that we have. And even launching one, there will be a host of problems.

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by78

Brigadier
Inside the transport platform that carries the LM-5 rocket vertically from the assembly hall to the launch tower. The base of the platform is 28m by 23m, and the vertical arm is 70m high. The entire platform weighs more than 2000 tons.


 

by78

Brigadier
An
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giving an overview of China's Mars exploration program and other endeavors. My technical Chinese in this area is limited, so I'm not able to translate. The paper however does contain an English abstract. I'll let our Chinese speaking members translate and give thoughts and comments.

Some interesting illustrations from the paper:




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