China's Space Program News Thread

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AssassinsMace said:
Does anyone know when the telescope as part of China's space station gets sent up? I heard it was 300 times more powerful than Hubble.
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The plan is 2024.

300 times more powerful seems kind of dubious, it will have a 2m diameter primary mirror vs Hubble at 2.4m. However no doubt the actual imaging electronic would be vastly superior to Hubble given the decades separating them, so maybe 300 times is referring to that.
 
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Captain
taxiya said:
You would be right if you said CZ-5B instead. CZ-5 (the base variant) does have a second stage. Yes, CZ-5B is specifically designed for the station.

As it is mission specific, CZ-5B's launches would be within 10 times in its life circle. The core stage returning is NOT anything new that the engineers could miss in their early study. So if they did not build something on it, there is no reason for them to retro-fit it. BTW, the UN convention wasn't something that China is not aware of, so the risk calculation has taken care of it.

It is unacceptable only by western medias, that is all as far as China is concerned. China won't care these noises.

And yes, it is very difficult to do anything to the rocket once you have finished the design. For example, if you reduce the weight of the engine in a new variant, you may think that is good and worth to do. But that will change the center of mass which will lead to massive change to the structure of the rocket and its control system (such as program to control the TVC). If the rocket is close to the end of its service, you won't do anything to it.

I am not aware of any rockets whose upper stage (2nd) are actively de-orbited by rocket power.
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What are the chances of some parts of a CZ5B falling on Times square?
 
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