China's Space Program News Thread

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FairAndUnbiased

Brigadier
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A fun fact: South Korea will be using a deep-space tracking and control system imported from China for its upcoming
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. The system features a dish antenna 35-meter in diameter that weighs 100 metric tons. It was
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under
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and will be used to track and control the lunar orbiter. Also interesting is that the orbiter will be launched using a Space-X Falcon-9 rocket, so this is a true multinational mission.

The first two images below show the imported reflector antenna installed in Yeoju, South Korea. The last three images show the same systems installed at a Chinese tracking facility for China's Chang'E lunar missions.

South Korean tracking facility:
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Chinese tracking facility:
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it should be widely publicized in response to every single South Korean claim of lunar capability that, based on the logic that having tool IP means you have the right to the IP of what the tools produce (US sanctions logic), all data from the South Korean mission is Chinese IP.
 

FairAndUnbiased

Brigadier
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my evaluation of the next programs in terms of transferable tech and prestige:

1. Astrophysics - DAMPE is a waste of time, money and transferable tech. eXTP gives the most transferable tech (X-ray observatories can find X-ray pulsars for navigation; X-ray optics have tons of terrestrial uses) but DSL gives the most prestige as the first permanent lunar astronomical observatory.

2. Exoplanets - not qualified to answer

3. Heliophysics - I think ISM explorer might have the most transferable tech for future missions (mapping dust concentration in the solar system) and the highest prestige, while the others are just purely for heliophysics.

4. Planetary science - depends on if we talk about prestige only or care about transferable tech. Venus explorer might have the highest prestige as the newest Venus mission since Soviet Venera probes. Asteroid sample return has been done many times but might have transferable tech. The 2 earth observation satellites are obviously directly applicable but have 0 prestige attached.
 

zhangjim

Junior Member
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it should be widely publicized in response to every single South Korean claim of lunar capability that, based on the logic that having tool IP means you have the right to the IP of what the tools produce (US sanctions logic), all data from the South Korean mission is Chinese IP.
It is really necessary. It's hard to imagine how crazy Koreans are about their recent success:Those fanatical South Korean netizens even claimed that China should seek "advanced technological cooperation" with South Koreans.

Considering the increasingly crazy public opinion offensive of extreme nationalists in South Korea, the export of any advanced technology must be cautious.
 

by78

General
Zhurong Mars rover adopts two primary methods to keep itself warm. The first method is passive insulation. The rover is wrapped in a layer of aerogel, an extremely lightweight material with excellent insulation properties.

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The second method utilizes phase transition. The rover has two circular windows on its top surface, and directly beneath them are 20 heat collectors, with each collector containing a special chemical. As sunlight passes through the circular windows, the collectors absorbs its heat, which in turn liquefies the chemical inside the collectors. At night, the liquid chemical slowly solidifies while releasing heat back into the interior of the rover to maintain a stable internal temperature.

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The image below shows blocks of aerogel used to insulate the Mars rover. The surface of each block is coated in
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. There are seven blocks total, weighing only 5.59kg.
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by78

General
The private launch vehicle company LandSpace has released a new company logo and more information on its Zhuque-2 rocket and Tianque Lox/Methane engine.

The Suzaku-2 rocket is 49.5 meters long with a body diameter of 3.35 meters. It weighs 216 tons, with a take-off thrust of 268 tons. It can carry six tons of payload to LEO and four tons to SSO.

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by78

General
China has unfurled a de-orbiting sail attached to a Long March 2D rocket. The sail will allow the spent launch vehicle to safely return to earth in two years. This is the first time a de-orbiting sail has been used on a launch vehicle (as opposed to satellites) anywhere in the world. The sail has an area of 25 square meters, with the thickness of the sail being less than 1/10 of human hair. Due to its extremely compact design when folded, the sail can be easily retrofitted to existing launch vehicles and spacecrafts.

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eprash

Junior Member
Registered Member
China has unfurled a de-orbiting sail attached to a Long March 2D rocket. The sail will allow the spent launch vehicle to safely return to earth in two years. This is the first time a de-orbiting sail has been used on a launch vehicle (as opposed to satellites) anywhere in the world. The sail has an area of 25 square meters, with the thickness of the sail being less than 1/10 of human hair. Due to its extremely compact design when folded, the sail can be easily retrofitted to existing launch vehicles and spacecrafts.

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Would it enable second stage reusability?
 
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