China's Space Program News Thread


TerraN_EmpirE

Tyrant King
Yeah but China's EM-drive program is way ahead of anyone else, and growing. It's all about the program.:)
No It's all about implementation. There are plenty of programs for total bunk Eq, Both the Russians and US had Psychic Warfare programs... and for all we know the Chinese did as well. Plenty of programs exist and end in disaster.
When it comes to a New space Drive It's if it can be developed and implemented to get humanity beyond terra ferma more efficiently.
 

taxiya

Major
Registered Member
Wait are you talking about that EM driver NASA got it work but had no idea how is it POSSIBLE to work recently?
I think he is saying that the idea of EM-Drive was not taken seriously in the west, therefor no actual research done in the west until 2008 when China began a serious program to experiment and build such device. Only then did the west including NASA began to do the same.

And yes, it is the same EM drive from NASA.

P.S. I personally have not figured out how could EM-Drive work when the device is totally closed (microwave does not exit the cavity). So I am very skeptical about it. It could be a Hoax that both China and U.S. are playing against each other.:D Just try to fool each other to waste huge amount of money from meaningful investment in chemical rockets.
 

escobar

Brigadier
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China launched its first fully owned overseas satellite ground station near the North Pole on Thursday. This could be prove just as politically significant to Beijing as the facility’s technological benefits, space experts said. The facility, located in Sweden about 200km north of the Arctic Circle, would allow China to collect satellite data anywhere on Earth at speeds that were more than twice as fast as before, said the Chinese Academy of Sciences, the academic governing body that built and runs the station.

Construction of the China Remote Sensing Satellite North Pole Ground Station, as it is formally known, started two years ago at at Kiruna’s Esrange Space Centre, the world’s largest civil ground station for satellites. Sweden is one the few European Union nations not to have joined the North Atlantic Treaty Organisation – an intergovernmental military alliance – so is not so closely politically and militarily allied with the United States.

In 2011 China’s acquisition of a ground satellite station in Dongara, Australia – a close US ally – sparked serious concerns in the White House because it was in the same place as sensitive facilities used by the US military and Nasa for its space programmes. The operation of the station is believed to have been halted after protests from the US.

China has previously built ground satellite facilities in numerous foreign countries, mostly in Africa and South America, which are all joint ventures.But the fully owned overseas ground station in Sweden would give China much greater freedom and security to operate its space projects, some of which had military purposes, a Beijing space scientist said.

...
 

Equation

Lieutenant General
No It's all about implementation. There are plenty of programs for total bunk Eq, Both the Russians and US had Psychic Warfare programs... and for all we know the Chinese did as well. Plenty of programs exist and end in disaster.
When it comes to a New space Drive It's if it can be developed and implemented to get humanity beyond terra ferma more efficiently.
And who has the better chance at getting that "implementation" EM drive to fruition? China of course. It takes a strong program in order to implement anything, whether that experiences end up in disaster or success, the bottom line is that the progress are made therefore can be move onto the next phase of research and development. And who else can do that? Not many, China has the best chance in the world to accomplish it. Russia and US are in a budget crunch, China is not.
 

Equation

Lieutenant General
Eq, Every one is in a budget Crunch. And the PRC is hardly racing ahead of any one. IE Wait and see.
Not as dire as the US, Russia or even the European. China doesn't have an economic growth problems or sanctions like in the West does, therefore more room and money for R&D for continuation and expanding of the program.
 

Quickie

Major
I think he is saying that the idea of EM-Drive was not taken seriously in the west, therefor no actual research done in the west until 2008 when China began a serious program to experiment and build such device. Only then did the west including NASA began to do the same.

And yes, it is the same EM drive from NASA.

P.S. I personally have not figured out how could EM-Drive work when the device is totally closed (microwave does not exit the cavity). So I am very skeptical about it. It could be a Hoax that both China and U.S. are playing against each other.:D Just try to fool each other to waste huge amount of money from meaningful investment in chemical rockets.
In one of the videos the inventor himself did try to explain on the question of "microwave not exiting the cavity" Apparently, microwave does not behave the same way as gas molecules in an enclosed surface.

Aside from the question of how it really works, it's becoming clear it does really work. The problem is with the thrust of current test models being too small to be of practical use.
 

Blackstone

Brigadier
Interesting development in China's EM drive experiments. There might be something *there* after all. Hope to see more reports.

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announced on December 10, 2016 that not only has China successfully tested EmDrives technology in its laboratories, but that a proof-of-concept is currently undergoing zero-g testing in orbit (according to the International Business Times, this test is taking place on the Tiangong 2 space station).

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‘The establishment of an experimental verification platform to complete the milli-level micro thrust measurement test, as well as several years of repeated experiments and investigations into corresponding interference factors, confirm that in this type of thruster, thrust exists.’

Cast is a subsidiary of the Chinese Aerospace Science and Technology Corporation (CASC) and the manufacturer of Dong Fang Hong satellites.

According to Li Feng, chief designer of Cast’s communication satellite division, the team has built a prototype that so far generates just a few millinewtons of thrust, IBTimes UK reports.

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Successful propellentless Emdrive is tests in microgravity in space would be conclusive and definitive.

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A table of space mission parameters was calculated by Jon C. Rogers for the book Spaceship Handbook.

Six trajectories are listed

Three impulse (rocket) types and three constant acceleration brachistochrone types.

EMdrive could enable constant acceleration and brachistochrone trajectories. Currently emdrive propulsion is still in the millinewton(s) range. However, driving it with more power or finding other ways to scale the propulsion could achieve 0.01g or higher acceleration.

"Impulse" means the spacecraft makes an initial burn then coasts for months, which is a standard rocket mission.

Impulse trajectory I-1 is pretty close to a Hohmann (minimum delta V / maximum time) orbit, but with a slightly higher delta V.

Impulse trajectory I-2 is in-between I-1 and I-3 (it is equivalent to an elliptical orbit from Mercury to Pluto, the biggest elliptical orbit that will fit inside the solar system).

Impulse trajectory I-3 is near the transition between delta V levels for high impulse trajectories and low brachistochrone trajectories (it is a hyperbolic solar escape orbit plus 30 km/s).

Brachistochrone (maximum delta V / minimum time) trajectories are labeled by their level of constant acceleration: 0.01 g, 0.10 g, and 1.0 g.

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If you had a ten ton spacecraft. To accelerate at 1 G you need about 100,000 Newtons
If you had a ten ton spacecraft. To accelerate at 0.01 G you need 1,000 Newtons
If you had a ten ton spacecraft. To accelerate at 0.0001 G you need 10 Newtons

With a good nuclear reactor, a high energy consumption Emdrive could be powered for decades.

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It would take 100 weeks at 0.01G acceleration to get to 1.95% of light speed.
 

escobar

Brigadier
China is going to launch its first satellite to monitor the distribution of carbon dioxide around the global. The satellite, named TanSat, will improve the understanding of global CO2 distribution, beginning with its role in the carbon cycle and the ultimate contribution to climate change, and also track efforts to curb greenhouse gas emissions.

Tansat will carry two main instruments - a high-resolution Carbon Dioxide Spectrometer for measuring the near-infrared absorption by CO2, and a Cloud and Aerosol Polarimetry Imager (CAPI) to compensate for the CO2 measurement errors by high-resolution measurement of cloud and aerosol.


The CO2 detector will use optical remote sensing technology to examine the concentration of CO2 and other greenhouse gases in the air, while the atmospheric particulate matter sensor will analyze cloud and particulate matter to support the calculation of CO2 distribution.

"The two instruments will work together. They will not only show the concentration of carbon dioxide, but also the information about clouds and aerosol. These information in combination will have a great influence on our analysis of carbon sources, its storage sinks, and climate changes," said Lu Naimeng, chief engineer from the National Satellite Meteorological Center under China Meteorological Administration.

The satellite, jointly developed by the Ministry of Science and Technology (MOST) and implemented by the Chinese Academy of Sciences (CAS) after six years' efforts, will make China the third country that owns such satellite, after the United States which has OCO-2, and Japan, which has GOSAT.

"The launch of this satellite will boost our country to an international level in terms of using high-resolution Carbon Dioxide Spectrometer for monitoring CO2 concentration. It enables our country to know the distribution of carbon dioxide. With its observation data, It also provides a scientific ground for China to solve air problems, helping China to make due contribution to the global effort to cope with climate change," said Yi Zengshan, a CAS researcher.

The satellite is expected to operate in space for three years. It will provide data on global carbon emission. "The emission of carbon dioxide is a problem that all human beings are facing. The TanSat is not a satellite for China, but also a vital satellite for human beings to monitor the Earth and the CO2 emission," said Lu.
 

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