China's Space Program Thread II

[Asug]

Are Jilin series the satellites with highest resolution in China? So China is far behind western counterparts in spy satellites' quality & quantity?

If we are talking about non-commercial satellites, then Gaofeng-11 has a 10 cm resolution.

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[AndrewJ]

Recommend two excellent CCTV 9 documentaries to space enthusiasts.

One is for China Space Station construction process. 天宫建造 (5 Episodes)

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Another is for Chang'e-6 mission. 嫦娥六号 (3 Episodes)

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Time to have a break, and dream of a space travel.

 

[tphuang]

right, Jilin-1 is the most advanced for commercial satellites. Military grade is obviously higher resolution.

 

[Xiongmao]

Time to have a break, and dream of a space travel.

The time to get excited is when you see Long March 10 ready on the launch platform.

 

[tphuang]

Hainan commercial SpacePort Pad 1 can recover in 5 days after each launch to get ready for next launch!

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com'on twice a month launching!

 

[gpt]

YF-100k is slightly uprated and has the gimbal system redesigned to allow this clustering (max is 7 for 5m). Since it's the next crew launcher they need mature technology not a completely novel design. Tooling is inherited from the CZ5.

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Lots of interesting info here

The most important thing is this rocket actually targets dry mass margins and technologies beyond current Chinese state-of-the-art.
They have done a lot of optimisation for dry mass for this new rocket, which was something they really needed to work on to improve previous poor chinese rocket dry mass, incl:
- cold-pressurized gas cylinder compatible with liquid oxygen
- COPVs
- new pumps and and more compact TVC system

YF-100K dry mass has been reduced by over 20%, thrust increased by 5%.
New pump/TVC/gimbal system allow a larger cluster of engines to be fitted onto a rocket booster.



10:35 of documentary:

 

[by78]

A Long March 2D rocket has successfully launched Siwei Gaojing-3 and Tianyan-23 satellites earlier today. This marked the 564th flight of the Long March series.

 

[by78]

Models of Long March 12 and reusable Long March 12B launch vehicles, the latter of which is under active development. The second image shows a slide presented by CASC on a certain new reusable rocket in the 4-meter-diameter class. I think it's referring to the Long March 12B. If so, 12B is a bit thicker than 12, which has a diameter of 3.8m.

CASC has successfully conducted a full system hot test run of the 2nd-stage propulsion system for the reusable Long March 12B launch vehicle.

 

[by78]

The famed Chengdu Aircraft Group is hiring launch vehicle designers and engineers. I wonder what it's up to?

 

[by78]

A nice image of an ascending KZ-1 with a vapor cone forming around its fairing.