News on China's scientific and technological development.

SamuraiBlue said:

Why hasn't anyone posted this news?



It"s a neat idea actually. The only problem is how to generate the electricity to power the engine in the first place. It could be fuel cell or if you want to go super high power, it could be powered by nuclear reactor.

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Hi Everyone,

I am a long time reader, but first time poster.

First of all thank you SamuraiBlue for posting the article.

After reading about this plasma jet engine, I find the idea fascinating.

It might be dumb to ask but what I would like to know is, is this meant to be a purely new propulsion system (i.e. non-conventional design, etc) or is it to act as a replacement for current fuel injection method in a conventional jet engine?

I think if it is to act as replacement then, some of the electricity can be recouped from the turbine in the engine following ignition, lowering the input from the external power source whist the engine is in operation.

Also possibly a stupid idea for starting-up the engine would be a ground base external power source, once the engine is spun up to speed, detach and off the jet go.

Just my two cents, if anyone with the relevant back ground could help explain whether the above is workable or not, it would be much appreciated.

Huawei's flagship Mate 30 5G phone now has only 1% U.S. content. Surprisingly, the $34 OLED screen from Samsung cost more that the $32 HiSilicon processing chip and is the most expensive major component:

Huawei teardown shows US ban made company turn to Chinese parts

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Flagship model Mate 30 now only has 1% American components
...

At a glance, parts made in China now form 42% of the total value of components, up from about 25% when Huawei was still able to buy from U.S. companies. American-made parts now represent only 1% of the total components value in Mate 30, down sharply from about 11%.

They found that the Chinese components used in this model was 16.5 percentage points higher than in Mate 20 Pro, which was launched before the U.S. sanctions and compatible with 4G mobile networks.
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supercat said:

Huawei's flagship Mate 30 5G phone now has only 1% U.S. content. Surprisingly, the $34 OLED screen from Samsung cost more that the $32 HiSilicon processing chip and is the most expensive major component:

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And increase in Korean and Japanese semiconductor parts too, considering they are the actually competitors to US semiconductor players.

supercat said:

Huawei's flagship Mate 30 5G phone now has only 1% U.S. content. Surprisingly, the $34 OLED screen from Samsung cost more that the $32 HiSilicon processing chip and is the most expensive major component:

Please, Log in or Register to view URLs content!

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Even Apple uses BOE's (Chinese) screens; what's up with Huawei going Samsung, and at such a cost?

manqiangrexue said:

Even Apple uses BOE's (Chinese) screens; what's up with Huawei going Samsung, and at such a cost?

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Remember reading an explanation on why, perhaps even here on this forum. It was conjecture but really made a lot of sense.

Stopping Facebook from doing whatever they want is like China stopping Facebook from doing anything it wants in China. Making democracy crumble is Facebook's right.

Chinese surveyors reach summit of Mount Everest to remeasure its height

• Eight-member team may be the only people to get to the top this year after climbing season was cancelled due to the coronavirus pandemic
• They are conducting a comprehensive scientific survey of the mountain, which may have been shrunk by the 2015 earthquake in Nepal
• China has conducted six major scientific surveys of Everest since the founding of the People’s Republic in 1949, including two height measurements – in 1975 and 2005. The United States, Italy and India have also conducted surveys and measured the peak, with different results.
• Nepal has conducted its own surveys of Everest since 2017 and will hold a workshop with China to discuss the data and jointly determine the mountain’s exact height, the Nepalese embassy said earlier.
• The two countries have long disputed whether measurements of the mountain should include its snowcap or be limited to the rock base. In 2005, a Chinese expedition measured the height at 8,844.43 metres, excluding snowfall. That was declared by China to be the most accurate measurement to date. But Nepal has long held that Everest’s snowcap should be included, putting the iconic peak 4 metres higher at 8,848 metres, a height that is widely accepted.

This one can also go to China Space Program thread.

Crash course in saving the Earth: Chinese simulation stops asteroid strike without using nukes

• Computer model shows how potentially hazardous asteroids can be knocked off course and out of harm’s way using an ‘enhanced kinetic impactor’ spacecraft
• NASA advocates the use of nuclear weapons to neutralise such threats, but the option is not without controversy
• The alternative, according to a team from the Chinese Academy of Sciences, is to send an unmanned spacecraft out to meet the incoming threat and deflect it out of harm’s way.
• The team successfully tested their theory using a computer simulation, the results of which were published in a recent edition of the peer-reviewed online journal Scientific Reports.

localizer said:

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A little description will help.

The first train for China's first medium-low speed magnetic-levitation tour rail line has entered the debugging stage in Changchun, Northeast China's Jilin province.