China's Space Program Thread II

[antiterror13]

Solar panels of Wentiancan provide more than 430kWh eletric power every day. So solar panels on both Lab modules can provide more than 860kWh. And the panels on Tianhe, Shenzhou and Tianzhou may produce another 400kWh altogether.

My original question is "Power" in kW, not energy kWh .... any idea ? how much power kW of the total solar panels ?

My guess is over 100kW ... ISS can generate 240 kW in direct sunlight

So running a microwave oven shouldn't be a problem as only need about 2.2kW ... perhaps doing it during full sunlight

 

[iantsai]

My original question is "Power" in kW, not energy kWh .... any idea ? how much power kW of the total solar panels ?

My guess is over 100kW ... ISS can generate 240 kW in direct sunlight

So running a microwave oven shouldn't be a problem as only need about 2.2kW ... perhaps doing it during full sunlight

Ya, but I did not find the power output data for the panels.

Let's suppose the CSS were in the sun light 50% of the time, then the power would be 430kWh/12h≈36kW for Wentian's solar panel working in the sun light.

And the overall solar power of the CSS might be three times of this number, around 100kW. Plenty of eletric power to use the microwave oven, defnitely.

 

[Asug]

All of China's statements about the crewed lunar landing state that they are going before 2030. Why is that? Why not just make a statement saying 2029 instead of "before 2030"? My theory is that there's a slim chance that if everything goes perfectly, they could land by 2028, but since the chance is so low, they don't want to state 2028 in case they miss the deadline and they don't want to state 2029 to leave room open for 2028 in case development goes faster than expected

I read somewhere online that this date is named as “2030年前”, which can literally be translated as “2030 year ago”. And that doesn't necessarily mean "before 2030," but it could mean "before the end of 2030" or "around 2030."

 

[escobar]

A dynamic private chinese will be more successfull selling high-speed internet anywhere across the world than any SOE.
I think Satnet/Guowang will be more a civil-military network like Spacex Starshield, meeting the most demanding government and military requirements. Guowang constellation will include not only communication but also earth observation. The privates companies will target international clients and compete agaisnt Starlink/Kuiper/Oneweb.

Exactly what I said. Like the launch sector, the telecom is being opened to private companies

Recent government announcements seem to have indicated greater general openness in the telecoms sector, primarily in the name of faster innovation. In early October, the MIIT published a draft for comments of “Opinions on Innovating the Management of the Information and Communications Industry to Optimize the Business Environment”, which included plans to “promote the reform of the satellite internet business in steps….and expand the scope for private enterprises to participate in telecommunications business”

Galaxy Space filed for a 1,804-satellite “Black Spider Web” constellation with support from Chinese regulators in August 2023

If all development plans and aspirations are met, in 5 years we might not just have a Chinese version of Starlink, but an O3b and OneWeb too.

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[sunnymaxi]

The Russian government approves the joint construction of a lunar station with China

Vladimir Gruzdev, chairman of the board of directors of the Russian Law Society, said on November 29 that the Russian government’s Legislative Committee approved the initiative to jointly build a Russian-Chinese international scientific lunar station. The federation The bill aims to approve the agreement between the Russian and Chinese governments to jointly build an international scientific lunar station. The agreement is in Russia's interest and will help strengthen Russia-China strategic partnership and the development of Russia's space affairs. The Russian Government Commission..

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[escobar]

SPACE-PIONEER is targeting next June for the maiden launch of Tianlong-3, 14t to 500km SSO, from Wenchang commercial launch pad 2. 2 more launches are planned for September & November from Wenchang & Jiuquan, 11t to 800km.

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[taxiya]

My original question is "Power" in kW, not energy kWh .... any idea ? how much power kW of the total solar panels ?

There are some seemingly contradictory figures, I don't know how they are defined, but here they are.

Source one

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太阳翼基板上，安装了柔性砷化镓电池，俗称薄膜电池。薄膜电池的光电转换效率高于传统硅电池，体积更小、重量更轻。仅问天实验舱配置的太阳翼，功率就高达18千瓦，4个太阳翼就能提供空间站建成后“天和+问天+梦天”三舱组合体80%的能量。

Wentian module alone generate 18kW.

Source two
ISS generate 110kW. Tiangong 27kW.



The "contradiction" is that the first source gives a much higher figure, just two lab modules already provide 36kW, together with the core module, it must be more than 50kW in total when they all are directly lighten by the sun. Since we know that Tiangong's wings are constantly rotating and tilting to the sun, 27kW out of 50kW seems pretty low IMO.

My guess is over 100kW ... ISS can generate 240 kW in direct sunlight

ISS' real power generation is 84 to 120kw as wiki says which put 110kW by the Chinese paper as a good average.

 

[taxiya]

Solar panels of Wentiancan provide more than 430kWh eletric power every day. So solar panels on both Lab modules can provide more than 860kWh. And the panels on Tianhe, Shenzhou and Tianzhou may produce another 400kWh altogether.

Can you share the source of this 430kWh?

 

[HereToSeePics]

any idea of how much power could be generated by the panels?

My original question is "Power" in kW, not energy kWh .... any idea ? how much power kW of the total solar panels ?

Power is measured by kWh. Asking for a value without a time unit(specified or implied hour) is like saying “I have a 2 liter garden hose”. It doesn’t mean much because there’s a huge difference between a hose that puts out water at 2 liters per second, or 2 liters per hour or 2 liters per day.

You can say a hypothetical solar panel outputs 10kWh maximum in perfect conditions, so the maximum per day would be 240kW-Day. Or 0.16kW-minute. But no one likes to always guess what time unit the other person is using, so it’s always implied to be hours unless stated otherwise.

 

[antiterror13]

Power is measured by kWh. Asking for a value without a time unit(specified or implied hour) is like saying “I have a 2 liter garden hose”. It doesn’t mean much because there’s a huge difference between a hose that puts out water at 2 liters per second, or 2 liters per hour or 2 liters per day.

You can say a hypothetical solar panel outputs 10kWh maximum in perfect conditions, so the maximum per day would be 240kW-Day. Or 0.16kW-minute. But no one likes to always guess what time unit the other person is using, so it’s always implied to be hours unless stated otherwise.

Power is in kW .. become energy with time hence kWh

kWh is unit energy ...... Power * T

I am an electrical engineer (Grid), so I know what I am talking about