China's Space Program News Thread

[taxiya]

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Lecture by Long Lehao on 29th of August. Two things worth to note:

1. First prototypes of YF-130, YF-135 and YF-90 are produced. It seems that YF-135 is being developed in parallel with YF-130, meaning that maturity of first stage engine is not going to affect the schedule.
2. No mentioning of 120t LOX/LH2 engine. It seems that YF-90 will continue for 2nd stage.

The ppt has two obvious errors:

1. 双机(due engine) and 单机(single engine) should have been 双室(due chamber) and 单室(single chamber).
2. 氧油(oxygen oil) should have been 液氧煤油 (Liquid Oxygen Kerosene). Nobody uses 氧油 for short.

 

[siegecrossbow]

Landing date set around 2030!!!

 

[OppositeDay]

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Lecture by Long Lehao on 29th of August. Two things worth to note:

1. First prototypes of YF-130, YF-135 and YF-90 are produced. It seems that YF-135 is being developed in parallel with YF-130, meaning that maturity of first stage engine is not going to affect the schedule.
2. No mentioning of 120t LOX/LH2 engine. It seems that YF-90 will continue for 2nd stage.

The ppt has two obvious errors:

1. 双机(due engine) and 单机(single engine) should have been 双室(due chamber) and 单室(single chamber).
2. 氧油(oxygen oil) should have been 液氧煤油 (Liquid Oxygen Kerosene). Nobody uses 氧油 for short.

View attachment 76667

Don’t understand why it’s “YF-130 or YF-135” rather than “YF-130 and YF-135”.

 

[escobar]

https://twitter.com/i/web/status/1411497707462553608

 

[by78]

The Mars rover has travelled 1064 meters.

 

[by78]

Very nice high-resolution images from Mars.

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for a very large full panorama.

 

[taxiya]

Don’t understand why it’s “YF-130 or YF-135” rather than “YF-130 and YF-135”.

YF-130 sea level thrust is 480t, 12 engines in 2011 CZ-9 are 5760t. YF-135 is 360t, 16 engines in 2021 CZ-9 are 5760.

If we take the "or" seriously, it could mean that 2021 CZ-9 can be equipped with 12 YF-130, but preferably YF-135. Another explanation is that version 2011 and 2021 are in the "or" relationship. It all depends on which one meet the deadline first.

 

[ZeEa5KPul]

Is there any indication that the CZ-5DY will be launching LEO satellite constellations or is it purely for lunar landings? Same question for the CZ-9.

Also, are the CZ-9(11) and CZ-9(21) two separate rockets that will be built concurrently/sequentially or does the 21 design negate the 11?

 

[taxiya]

Is there any indication that the CZ-5DY will be launching LEO satellite constellations or is it purely for lunar landings? Same question for the CZ-9.

Also, are the CZ-9(11) and CZ-9(21) two separate rockets that will be built concurrently/sequentially or does the 21 design negate the 11?

CZ-5DY does have plan for LEO mission, possibly the new generation crew spacecraft. It would be the single stick variant.
See the one on the left.


Beside LEO crew mission, there is nothing to stop it being used for satellite mission except possibly the price tag.

CZ-9 is also intended for near earth mission. That is actually one of many reasons for its seemingly lower lunar payload/mass ratio because the design can not be optimized for a pure lunar mission like Saturn V.

I can not answer the question of version 11 and 21 with certainty. I guess that they are being developed (key tech and design phase) at the same time right now. 11 has an early start. 21 is a new idea recently after CZ-5DY became more realistic negating the modular idea of version 11 (killing the A and B variants). YF-135 and YF-130 are more in parallel from the beginning than CZ-9. The rumor of 360t engine has been for some time. I also guess that if 21 progress fast enough, 11 may not see fruition. It is like the EM catapult vs. steam catapult. CNSA will take the one on time and better.

 

[escobar]

The Space-Earth Integrated Information Network Mega Project : Consist of various types of satellite systems (reconnaissance and surveillance satellites, communication satellites, navigation and positioning satellites, early-warning satellites, meteorological satellites, etc.) on different orbits, supplemented by land-, sea-, and space-based information systems and application terminals to form an organic, intelligent, distributed, space-earth integrated global information network system. This integrated network will support four application areas: spacecraft, guided missile and space launch centers, near space flight vehicles and unmanned aircraft.

https://twitter.com/i/web/status/1366374592634368002