China Outer Space Science, Technology and Explorations: News & Updates

[JSCh]

China航天​

22-3-13 09:50​

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【大推力氢氧发动机完成今年首次试车】中国航天报最新消息，3月10日下午3点左右，北京云岗传来巨大轰鸣，这是我国大推力氢氧发动机在今年进行的首次试车。启动运行520秒后，发动机正常关机，试车圆满成功，我国迄今最大推力的氢氧发动机又一次完成了浴火淬炼。​

该台发动机成功进行的第二次长程试车，进一步验证了大推力氢氧发动机的可靠性。大推力氢氧发动机用于长征五号系列运载火箭的芯一级，是目前我国已投入型号应用的性能最先进的低温液体火箭发动机。​

China Aerospace
22-3-13 09:50

[High-thrust hydrogen-oxygen engine completed its first test run this year]

According to the latest news from China Aerospace News, at around 3 pm on March 10, a huge roar came from Yungang, Beijing. This is the first test run of my country's high-thrust hydrogen-oxygen engine this year. After 520 seconds of start-up operation, the engine was shut down normally, and the test run was a complete success.

The successful second long-range test run of this engine further verified the reliability of the high-thrust hydrogen-oxygen engine. The high-thrust hydrogen-oxygen engine is used in the core stage of the Long March 5 series of launch vehicles. It is the most advanced cryogenic liquid rocket engine that has been put into use in my country.

 

[JSCh]

Chinese scientists hail space radar breakthrough​

• Researchers at the National Defence Technology University say their laser imaging technology can identify small objects in space with unprecedented accuracy
• The scientists say it could be used to guide laser beams removing small pieces of hazardous space debris

Chinese scientists hail space radar breakthrough

Researchers at the National Defence Technology University say their laser imaging technology can identify small objects in space with unprecedented accuracy.

www.scmp.com

 

[JSCh]

In physics, simplicity is beauty. Chinese astronomers, using devices including the world's most sensitive radio telescope, identified a single parameter to describe the mysterious repeating fast radio bursts hailing from far beyond the Milky Way.

https://twitter.com/x/status/1504729659837059074

Frequency-dependent #polarization of repeating #fastradiobursts reveals their origin @sciencemagazine @nature

https://twitter.com/x/status/1504517978691457038

 

[JSCh]

How scientists reviewed the process and development of space intelligent robot technology?

Beijing, China (SPX) Mar 31, 2022 - It is an inevitable choice for the development of space automation technology to use space intelligent robots to realize space exploration and space resource utilization. China started with the succ

www.spacedaily.com

 

[JSCh]

Chinese lunar satellite to join world’s largest-ever ‘radio telescope’

Orbiting lunar satellite will join observatories on Earth in a giant network of antennas to form the Space Very Long Baseline Interferometry.

www.scmp.com

 

[JSCh]

Chinese satellites achieve V-band low orbit measurement​

Source: Xinhua Editor: huaxia 2022-04-06 20:45:42

BEIJING, April 6 (Xinhua) -- GalaxySpace, a private satellite maker based in Beijing, has achieved V-band low orbit measurement and control on its six satellites which were sent into space on March 5, the China Science Daily reported Wednesday.

Satellite measurement and control refers to achieving the position and condition of satellites and controlling the platforms and loads of satellites.

At present, satellite communication is usually realized by the Ku/Ka frequency spectrum. The resources in these two frequencies have gradually become saturated, thus the international commercial communication satellites are gradually developing into higher frequency bands, according to the news report.

The bands of Q/V frequency are the most suitable for satellite communication due to their large bandwidth, large capacity, narrow beam and low cost. But, they are still in the initial stage of their development.

The six satellites will verify the networking technology and service capability of the low-orbit internet constellation. They will also verify remote sensing technology.

Chinese satellites achieve V-band low orbit measurement

Chinese satellites achieve V-band low orbit measurement-

www.xinhuanet.com

 

[JSCh]

China is planning its first space mission to survey the skies for Earth-like exoplanets

https://twitter.com/x/status/1513811222919065602

 

[JSCh]

China launched an atmospheric environment monitoring satellite via a Long March-4C rocket from N China’s Taiyuan Satellite Launch Center early Saturday. The satellite will play a role in environmental protection and agricultural disaster monitoring.

https://twitter.com/x/status/1515137161263149056

 

[JSCh]

China will build a Planetary Defense System against near-earth asteroids, aiming at 2025-2026 for an impact test like #DART, according to Wu Yanhua, the vice administrator of #CNSA

https://twitter.com/x/status/1518027350994079744

 

[mazeto]

A " cheap " investment for China with huge & perpetual returns is to keep one slot in its manned space flights for countries from the third world... down to the tiniest island nations.
In addition to the instant adulation, China will be mentioned in the history books , conversation s & quiz contests of that country whenever the topic of space exploration is discussed, for perpetuity. Even if that country become an enemy in the future.
India's support of Russia on Ukraine is not just realpolitik or due to military. A groundswell of support is there within the population itself.The USSR invested in similar goodwill projects with India for decades, and the goodwill stays even now that Russia is a pale shadow of it's past. For example, whenever space exploration is discussed on any forum in India, the USSR is automatically mentioned ,as the first Indian cosmonaut travelled in a USSR craft to space.
That is how " soft" power has its uses, if the time and place is appropriate.

 

[JSCh]

Chinese scientists and engineers are considering sending a robotic probe to collect dust and rocks from the far side of the moon, an ambitious endeavor that will likely make it a world's first, said a senior space agency official. #ChinaTech https://bit.ly/37GhKNQ

https://twitter.com/x/status/1518137675835797505

 

[JSCh]

China's Mars rover Zhurong has spent 342 Martian days and traveled 1,921m on the red planet's surface; the lunar rover Yutu-2 has resumed work for the 42nd lunar day and traveled 1,181m on the far side of the moon, according to China National Space Administration on Sunday.

https://twitter.com/x/status/1521081565572255744

 

[mike2000 is back]

China's Mars rover Zhurong has spent 342 Martian days and traveled 1,921m on the red planet's surface; the lunar rover Yutu-2 has resumed work for the 42nd lunar day and traveled 1,181m on the far side of the moon, according to China National Space Administration on Sunday.

How come the mars rover has travelled more distance than the lunar rover eventhough the Mars rover started operating about 2 years after the lunar one ?
Seems the lunar rover is VERY VERY SLOW or something .

 

[FairAndUnbiased]

How come the mars rover has travelled more distance than the lunar rover eventhough the Mars rover started operating about 2 years after the lunar one ?
Seems the lunar rover is VERY VERY SLOW or something .

Lunar rover is only on half the time. It doesn't operate during lunar night which is very long. It only has electronics for bootup from a wake signal.

Mars Rover is on all the time. It recharges batteries every Mars day which is about the same as Earth days.

 

[JSCh]

How come the mars rover has travelled more distance than the lunar rover eventhough the Mars rover started operating about 2 years after the lunar one ?
Seems the lunar rover is VERY VERY SLOW or something .

Conditions is a lot harsher on the moon because of the extreme temperature differences.

Beside shutting down at least half a earth month during lunar night because too cold, hibernation is also required during mid-noon of lunar day because too hot.

So far, only three countries has been successful in their attempt in landing and operating lunar rover - USSR, US and China.

But the US operated rovers were human/astronaut driven and have only short stay that avoid the extreme temperature.

Therefore only two countries had operate semi or autonomous moon rover, the USSR and China.

And Yutu-2 hold the record of longest stay and is still on-going.