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

[JSCh]

Examining our options for automated in-orbit assembly of #largestructures https://doi.org/gq2p2h

https://twitter.com/x/status/1580935132021936128

 

[JSCh]

China, using its Large High Altitude Air Shower Observatory (LHAASO), High Energy Burst Searcher (HEBS), and Hard X-ray Modulation Telescope, has observed the brightest gamma-ray burst ever. The GRB 221009A is over 10 times brighter than the brightest gamma-ray burst seen before.

https://twitter.com/x/status/1581830243496566784

 

[JSCh]

China’s Five-hundred-meter Aperture Spherical Radio Telescope (FAST) has discovered a giant atomic gas structure with a scale of about 2 mln light-years in the outer parts of Stephan's Quintet galaxy group. It is by far largest atomic gas structure ever detected in the universe.

https://twitter.com/x/status/1582910723964997633

A 0.6 Mpc H i structure associated with Stephan’s Quintet - Nature

Atomic hydrogen observations in the vicinity of Stephan’s Quintet are reported, showing a large gaseous structure of around 0.6 Mpc in size in the velocity range of 6,550–6,750 km s−1.

www.nature.com

 

[JSCh]

China's largest-thrust vacuum liquid oxygen-methane engine has successfully completed its 1st full-system hot fire test which lasted 20 seconds. The engine, codenamed TQ-15A, has a vacuum thrust of up to 836 kN and is the 2nd-stage main engine for the 2nd batch of ZQ-2 rocket.

https://twitter.com/x/status/1582924816549642240

 

[JSCh]

A proposal for monitoring potentially hazardous near-Earth asteroids

An enormous number of near-Earth asteroids (NEAs) orbit around the sun, and among them, 2,072 NEAs are recorded in the Minor Planet Center (MPC) database as potential hazardous near-Earth asteroids (PHAs). These PHAs frequently make close approaches to Earth's orbit, and therefore, the hazard...

phys.org

 

[JSCh]

TanSat's first attempt to detect human-caused CO2 is successful
https://doi.org/gq4mf8

https://twitter.com/x/status/1584916749165756418

 

[JSCh]

Scientists investigate using lunar soils to sustainably supply #oxygen and fuels on the #moon
https://doi.org/gq5hf7

https://twitter.com/x/status/1586048340676026375

 

[JSCh]

科技日报​

24分钟前 来自 微博 weibo.com​

【重型火箭之基！我国500吨级火箭发动机全工况半系统试车成功】记者从中国航天科技集团六院获悉，该院研制的500吨级液氧煤油火箭发动机，于3月5日取得全工况半系统试车的圆满成功。这标志着我国500吨级重型运载火箭发动机关键技术攻关取得重要突破，为后续重型运载火箭工程研制打下坚实基础。​

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据介绍，此次试验是该型发动机除推力装置之外，组件配套完整的系统试车，也是该型发动机首次全工况试车。试车启动、转级、变工况与关机过程工作平稳，验证了发动机设计、制造和试验方案，为下一步进行发动机整机试车等研制工作奠定了基础。​

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该发动机是目前世界上推力最大的双管推力室发动机，采用全数字化设计与管理，相比120吨级液氧煤油高压补燃发动机，推力增大了3倍，比冲提高了3%，推质比提高了25%，发动机综合性能指标达到世界先进水平。（张平 科技日报记者 付毅飞）​

Science and Technology Daily
24 minutes ago from Weibo

[The foundation of a heavy rocket! China's 500-ton rocket engine successful cold test run]

The reporter learned from the Sixth Academy of China Aerospace Science and Technology Corporation that the 500-ton liquid oxygen kerosene rocket engine developed by the Academy has achieved on March 5 a successful cold test run. This marks an important breakthrough in the key technology of China's 500-ton heavy-duty launch vehicle engine, laying a solid foundation for the engineering development of subsequent heavy-duty launch vehicle.

According to reports, this test is a complete system test run of the engine except the thrust component. It is also the first full-condition cold test run of this type of engine. The start-up, shifting, changing conditions and shutdown process of the test run worked smoothly, which verified the engine design, manufacturing and test plans, and laid the foundation for the next step of the engine test run and other development work.

This engine is currently the world’s most powerful dual combustion chamber, dual-nozzle engine developed with fully digital design and management. Compared to the current 120-ton liquid oxygen kerosene high pressure staged combustion engine, the thrust has been increased by 3 times, the specific impulse has increased by 3%, the thrust to weight ratio has increased by 25%, and the engine's comprehensive performance indicators have reached the world advanced level. . (Zhang Ping Science and Technology Daily reporter Fu Yifei)

View attachment 722146​

Congratulations! A Chinese research institute successfully completes the first test on the country’s self-developed liquid rocket engine with a maximum thrust of 500 tons after nearly ten years of research and devt, representing a great breakthrough in key technologies.

https://twitter.com/x/status/1588844730422394881

 

[JSCh]

AT-1B sub orbital plane concept at Zhuhai Air Show via 微博/AC一派胡言侯东渐
The plane made its maiden flight at 0716 2021

https://twitter.com/x/status/1589084712202801152

 

[JSCh]

LHAASO is just the first in a batch of observatories taking shape across the Tibetan Plateau, which might one day rival the high, dry, Atacama Desert in Chile as a home for premier observatories. IHEP's Ali CMB Polarization Telescope (AliCPT), under construction in the plateau's west, will start its hunt for signs of primordial gravitational waves next year. This year, the National Space Science Center will begin to build the Daocheng Solar Radio Telescope (DSRT), which will study the sun's violent outbursts. And the National Astronomical Observatories of China (NAOC) in Beijing is studying sites on the northwestern rim of the plateau for a 12-meter Large Optical-Infrared Telescope (LOT), larger than any existing telescope.

World’s largest solar telescope array is now complete

https://twitter.com/x/status/1592131864688484353

 

[JSCh]

China on Monday released the first image captured by the Hard X-ray Imager (HXI) onboard the country's Advanced Space-based Solar Observatory (ASO-S) or Kuafu-1. The image shows an M-class solar flare that occurred in mid-November.

https://twitter.com/x/status/1595286017468243969

 

[JSCh]

China航天​

22-11-22 22:17​

发布于 海南​

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空间高效自由活塞斯特林热电转换装置作为空间站“梦天”实验舱舱内的验证项目之一，安装在航天基础试验机柜内。作为独立系统试验模块，是目前国内最先进的空间能源转换装置。​

斯特林热电转换装置可将放射性同位素热能转换为电能，属于“动态”空间同位素电源系统中最先进的技术，相较于传统的“静态”同位素温差转换电源技术，具有高效率、高比功率等显著特点。目前，国际上尚未开展斯特林热电转换技术的空间应用。此次”梦天“空间科学试验的目的是为了进一步验证在空间环境下该项技术的适应性及可靠性，获得该技术在轨飞行应用数据，进而结合在轨飞行试验数据优化工程样机，加快飞行样机的研制，为我国空间先进电源技术的发展提供技术支持，为未来“深空探测”计划提供技术储备。(兰州空间技术物理研究所)​

China Aerospace
22-11-22 22:17 Posted in Hainan

As one of the verification items in the "Mengtian" experimental cabin of the space station, the space-efficient free-piston Stirling thermoelectric conversion device is installed in the aerospace basic test cabinet. As an independent system test module, it is currently the most advanced space energy conversion device in China.

The Stirling thermoelectric conversion device can convert radioactive isotope heat energy into electrical energy. It belongs to the most advanced technology in the "dynamic" space isotope power supply system. Compared with the traditional "static" isotope temperature difference conversion power supply technology, it has high efficiency, high specific power. and other notable features. At present, the space application of Stirling thermoelectric conversion technology has not been carried out internationally. The purpose of this "Mengtian" space science experiment is to further verify the adaptability and reliability of this technology in the space environment, obtain the application data of this technology in orbital flight, and then optimize the engineering prototype based on the data of the orbital flight test, and accelerate The development of the flight prototype provides technical support for the development of my country's space advanced power supply technology, and provides technical reserves for the future "deep space exploration" program. (Lanzhou Institute of Space Technology Physics)

 

[JSCh]

The third batch of experiment samples from China's space station, including new rice seeds produced in space, was delivered on Sunday, according to the Chinese Academy of Sciences (CAS). It is the world's first time to harvest rice seeds in orbit.

https://twitter.com/x/status/1599597373193302016

 

[JSCh]

A strange blast of radiation from space may upend how we categorise such flashes, called gamma ray bursts. It seems to come from a black hole forming surprisingly slowly after two stars merge, indicating a gap in our understanding of black holes

https://twitter.com/x/status/1600949468215615488

https://twitter.com/x/status/1600644072477270026

 

[JSCh]

China on Monday released the first image captured by the Hard X-ray Imager (HXI) onboard the country's Advanced Space-based Solar Observatory (ASO-S) or Kuafu-1. The image shows an M-class solar flare that occurred in mid-November.

https://twitter.com/x/status/1595286017468243969

The first batch of images taken by China's Advanced Space-based Solar Observatory (ASO-S), nicknamed Kuafu-1, was released on Tuesday in Beijing.

https://twitter.com/x/status/1602537091115536385