China's Space Program News Thread

Status
Not open for further replies.
escobar

escobar

Brigadier
SanWenYu said:
China is building a near-Earth asteroid defense system and will test it in about 4 years from now. If I am understanding what the deputy director said correctly, the monitoring and early warning components of the system are being built.

"Deputy director of China's national space admin, Wu Yanhua, told the CCTV reporter that China is building a near-Earth asteriod defnese system as a response to the threat of near-Earth asteroids."

"The first step is to complete the land- and space-based monitoring and early warning system. The monitoring system will have a database for the asteroids, in particular those considered critically threatening. Meanwhile, research and study will start for defense technologies."

"The next step is to create the asteroid defense system and develop defense strategies. It will begin with simulation on computers to practice and verify the process (of defense)."

"The final step is to actually test the system on a "threatening" asteroid in 2025 or 2025, i.e. at the end of the 14th 5-year plan. In the test, a spacecraft will be sent to the selected asteroid to observe it in close distance, then strike it to change its course."






Please, Log in or Register to view URLs content!
Click to expand...
https://twitter.com/i/web/status/1518027350994079744
 
by78

by78

General
The number of operational satellites China has now exceeds 500.

52026302601_b0005f7bf8_h.jpg
 
T

taxiya

Brigadier
Registered Member
by78 said:
52023809463_ea4d3a3d2f_k.jpg


The new configuration of the Long March 9 rocket has 26 200-ton LOX/Methane engines for first stage. The diameter of the core stage has been increased to 11m, and the diameter of the fairing has been increased to 10m:
52023774811_c1a650d7da_k.jpg
Click to expand...
Interesting thing is that in the Mars sample return mission CZ-9B is still under consideration. This CZ-9B is certainly the single stick variant of the version 11 CZ-9. While the CZ-9 here is version 22 CZ-9 (with 26 methane engines), but the version 21 CZ-9 is 16 YF-135.

It is a bit "crazy" to have 3 types of cryogenic propellants for the rocket.
 
escobar

escobar

Brigadier
taxiya said:
Interesting thing is that in the Mars sample return mission CZ-9B is still under consideration. This CZ-9B is certainly the single stick variant of the version 11 CZ-9. While the CZ-9 here is version 22 CZ-9 (with 26 methane engines), but the version 21 CZ-9 is 16 YF-135.

It is a bit "crazy" to have 3 types of cryogenic propellants for the rocket.
Click to expand...
it's like they don't know which way to go...
 
T

taxiya

Brigadier
Registered Member
by78 said:
Tianwen-2 probe will be launched in 2025 for a sample return mission to astroid 469219 Kamoʻoalewa. Mars sample return mission to be launched by 2028:
52023809463_ea4d3a3d2f_k.jpg
Click to expand...
Now there is a competition with NASA, not because China intends to but due to NASA's delay.

Recently NASA decided to delay their Mars Sample Return mission. The new launch dates are one in 2027 and two in 2028, with earth arriving date in 2033 as followingMSR_replan_01.png
The original launch date was 2026 and earth arriving date was 2031.

According to 火星采样返回任务轨道方案初步设计, if the launch date is 2028, the accent time from Mars surface is April 2030, departure to earth is between October and November 2030, arriving earth on September 2031.

Note, the reason that China's sample returns in 2031, two years ahead of NASA is because China gether sample on the landing site, while NASA is having a rover to run around gathering cached samples, so it will miss the return launch window in 2030.
 
Status
Not open for further replies.
Top