re: China to test 3nm EUV lithography machine that was developed by Huawei

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Hyperbole. Look it up, John

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No, I didn't take the time to count. I just know I barely have posted Grok AI post so I know it's less than 50. If I actually counted, I would have given you an exact number like "27" but you would understand that if you weren't a dumbass. So I am glad we established you are a lying dumbass who when gets caught lying claims it was "hyperbole"

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As far as I know lithography is a print method.

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in a way, yes, but it is printing layer upon layer onto the wafer which includes resistors, transformers, relays, etc., and to do it efficiently and to extreme accuracy (i e., 2nm).

An important feature in applying this technology to imaging sensors is flatness. This is especially important when used in space research and medical, as the optics that get designed to read the data from these sensors have a very small range of 'focus' of only a few nanometers, so the glass must be ground by robotics and finely finished by hand, and the sensor's surface can't deviate in flatness more than a few nanometers. This is very difficult, and the machinery is extremely expensive. Typically a half-billion dollars in cost for the machine alone.

Thank you for the explanation.

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So I am glad we established you are a lying dumbass who when gets caught lying claims it was "hyperbole"

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So... were I to say that you were a stupid son of a bitch, would you say "HA! You are clearly a liar. I am not stupid." And then take your victory lap and upvote your own post?

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Learn Mandarin like the rest of us are being forced too.

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Already do!

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It'll be a mix of English and Mandarin like they spoke in Firefly.

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Singlish FTW!

Leftists lie. It's an indelible part of their mentally ill DNA.

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But they can't make a decent jet engine for fighter aircraft?

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Do you have a link or source? They have been making their own jet engines for fighter aircraft for a while now. Not on par with us yet but definitely closing the gap. I had Grok 3 do analysis...




"As of March 19, 2025, China has made significant strides in developing its fighter jet engines, reducing its historical reliance on foreign technology, particularly from Russia. The current state of China's fighter jet engine program reflects a mix of operational domestically produced engines, ongoing advancements, and persistent challenges in achieving parity with Western standards. Key Developments

WS-10 Taihang Engine
The WS-10, developed by the Aero Engine Corporation of China (AECC), is now a cornerstone of China's fighter jet fleet. Variants like the WS-10C power modern aircraft such as the Chengdu J-20, J-10, and J-16. By 2021, the WS-10C was showcased publicly on the J-20 at the Zhuhai Airshow, marking a shift away from Russian AL-31F engines.

Improvements in recent years have enhanced its reliability and thrust (around 14-15 tons), making it comparable to the AL-31F, though it still lags behind top-tier Western engines in efficiency and durability. The WS-10B variant, with thrust-vectoring capabilities, has been integrated into some J-20s, improving maneuverability and stealth.

WS-15 Emei Engine
The WS-15, designed for the J-20 stealth fighter, represents China's ambition to produce a high-performance engine rivaling those of the U.S. F-22 and F-35. With a reported thrust of 18-20 tons, it enables supercruise (sustained supersonic flight without afterburners), a capability confirmed in flight tests by mid-2023.

Reports from April 2023 indicated the WS-15 was ready for mass production, and by late 2024, clearer images of J-20As equipped with twin WS-15s emerged, suggesting operational integration. This engine significantly boosts the J-20’s range, payload, and agility, addressing earlier criticisms of underpowered performance with interim engines.

Next-Generation Engines
In 2024, Chinese scientists claimed a "groundbreaking" innovation with a shark skin-inspired turbofan structure aimed at reducing drag and improving efficiency. While details remain scarce, this suggests ongoing research into next-generation propulsion systems.

The recently unveiled J-36, a purported sixth-generation fighter, features three engines—possibly WS-10 or WS-20 derivatives—indicating that China may still rely on multiple engines to achieve desired thrust levels, potentially due to limitations in single-engine power output.

Current Applications
J-20 Mighty Dragon: Initially reliant on Russian AL-31F engines, the J-20 transitioned to the WS-10C by 2021 and now incorporates the WS-15, enhancing its status as a fifth-generation stealth fighter.

J-15 Flying Shark: Carrier-based J-15s have been spotted with WS-10 engines since 2022, replacing Russian AL-31Fs, with further variants in development for catapult launches.

J-36 and J-50 Prototypes: Unveiled in December 2024, these sixth-generation designs showcase China's advancing capabilities. The J-36’s three-engine configuration and the J-50’s twin-engine setup highlight experimentation with stealth and performance, though engine specifics remain unconfirmed.

Challenges and Limitations
Despite progress, China faces hurdles:
Reliability and Longevity: Chinese engines, particularly earlier WS-10 variants, have historically suffered from shorter service lives and higher maintenance needs compared to Western counterparts like those from Pratt & Whitney or General Electric.

Technological Gap: While the WS-15 closes the gap, Western engines still lead in fuel efficiency, time-between-overhauls, and advanced materials (e.g., high-temperature alloys and turbine blades). Developing these requires decades of expertise China is still accruing.

Innovation vs. Scale: Mass production is underway, but innovations like the shark skin structure are unproven in operational settings, and their impact remains speculative.

Strategic Implications
China’s engine advancements signal a maturing aerospace industry, with production estimates suggesting over 200 fighter jets annually (J-10, J-16, J-20, etc.) by 2025. The shift to indigenous engines reduces dependency on Russia and bolsters military self-sufficiency. However, the need for three engines in the J-36 prototype hints at ongoing struggles to match the power-to-weight ratios of U.S. sixth-generation designs, which typically rely on fewer, more powerful engines.
In summary, China’s fighter jet engines have evolved from foreign dependence to credible domestic production, with the WS-15 marking a high point. Yet, reliability, efficiency, and cutting-edge innovation remain areas where China trails the U.S. and its allies, though the gap is narrowing steadily.

That's still less than 50 Grok AI post out of 11,611 post. I did not know factual and sourced based information would trouble you so much. I will make sure to increase my Grok 3 analysis for you Memphis