Whi can't China build a good fighter engine?

  1. 1 month ago
    Anonymous

    >faster
    >better more modern avionics
    >better pilots
    >cheaper
    >better stealth
    >actually being manufactured
    cope retard, a j20 would decimate a squadron of f22

    • 1 month ago
      Anonymous

      We'd blow those shit boxes out of the sky with one hand on our dicks. Fucking ckink.

    • 1 month ago
      Anonymous

      LMAO

      • 1 month ago
        Anonymous

        >just dont worry about it

    • 1 month ago
      Anonymous

      If China spent their online troll money on airplane development they’d be a lot better off..

    • 1 month ago
      Anonymous

      you got 1/6 right

    • 1 month ago
      Anonymous

      implessive

    • 1 month ago
      Planebro

      >Not so far
      >Nope. All of the avionics they do have is stolen too
      >Most retarded statement of the year. Chinas recruiting marine and RAF pilots to train theirs.
      >Worse
      >LMAO
      >The engines arent

      Nice bait chink

    • 1 month ago
      Anonymous

      honestly PrepHole is probably the easiest board to get free (You)s from. If you just go into a Ukraine post and just make the most obvious vatmoron bait then you'll have like 20 replies in half an hour.

      • 1 month ago
        Anonymous

        Eastern euros aren't very bright.

      • 1 month ago
        Anonymous

        I blame the lack of hurling newfags out over the past few years

    • 1 month ago
      Anonymous

      Almost everything you said is total chink cope.

      >Better Pilots
      This has to be a troll of some sort.
      I can't believe anyone could say this with a straight face.

    • 1 month ago
      Anonymous

      >faster
      Yes, a little bit
      >better more modern avionics
      Yes
      >better pilots
      No yet, chinese pilot do get around the same amount of flight hours than us ones tho
      >cheaper
      Yes
      >better stealth
      Not from the rear. J20 canards design are fine. Canards =/= non stealth
      >actually being manufactured
      Yes

  2. 1 month ago
    Anonymous

    they hard

  3. 1 month ago
    Anonymous

    Single crystal superalloy turbine blades are one of those manufacturing black magic things, like cutting edge chip fabrication, that is just ludicrously hard to do in practice even if you know the basic idea and that it's possible. Almost nobody can do it. It's not even really subject to espionage much, because so much is fine tuned institutional knowledge and process details and ages of working with specific equipment.

    I imagine China will get there eventually throwing money at it but it's just plain super fucking hard.

    • 1 month ago
      Anonymous

      Unironically because the metallurgy is fucking hard. To elaborate on anon, the big names in aircraft engines have histories that are over a century old and date back to the turn of the 20th century at the latest. This is a sort of knowledge that takes generations to cultivate and China essentially started from scratch in the 1950s. That China has gotten as far as it has is a compliment to their ability rather than a damnation of it.

    • 1 month ago
      Anonymous

      China already manufactures single crystal allow blade. Lab fabbed blades were shown in the early 2000's.

      • 1 month ago
        Anonymous

        Theyve been saying it for 20 years yet havent seemed to put it into practice. Like a lot of stuff over there, it’s all pretense. Every year it seems theres a defense article saying “now china has single crystal blade engine tech!!”, but their engines still underperform. Years go by like this with no change.

        • 1 month ago
          Anonymous

          Even their latest helicopters that they claim to use domestic turbines, if you really dig into it they're a joint effort with a French company.
          The French make the turbines themselves and the Chinese make the gearboxes and other components.
          I can't imagine the French aren't willing to share their turbine tech so I guess it just boils down to the Chinese simply not being able to keep the necessary spec in their shops?
          Doesn't make sense.

          • 1 month ago
            Anonymous

            >I can't imagine the French aren't willing to share their turbine tech

            Why would the French share the tech when they can guarantee repeat customers?

            • 1 month ago
              Anonymous

              Maybe I should have worded it more "I can't imagine the Chinese wouldn't be able to bribe the right people or steal the right information to acquire the French companies turbine tech" instead.

          • 1 month ago
            Anonymous

            >Even their latest helicopters that they claim to use domestic turbines, if you really dig into it they're a joint effort with a French company.
            >The French make the turbines themselves and the Chinese make the gearboxes and other components.
            you're full of shit.
            The WZ10 turboshaft is domestic.

            • 1 month ago
              Anonymous

              >you're full of shit.
              https://en.m.wikipedia.org/wiki/CAIC_Z-10
              >Another new engine, developed by China and Turbomeca, is the WZ16 (涡轴16).[19] Its maximum output power is 1500 kW, and it will be installed in the Z-10 and Z-15/EC175.
              https://www.safran-group.com/products-services/ardiden-3c-first-jointly-developed-aero-engine-be-entirely-certified-china
              FRANCE. Obviously, that's the only answer when you can't stop your rotorcraft turbines from unexpectedly bricking. You bring in THE FRENCH.

              • 1 month ago
                Anonymous

                are you fucking retarded?
                I said the WZ-9 turboshaft is domestic and that's true. They have several hundred of these in service. Prototype WZ-10 flew with PT6Cs. Learn2read you dumb shit.

          • 1 month ago
            Anonymous

            >I can't imagine the French aren't willing to share their turbine tech

            Why would the French share the tech when they can guarantee repeat customers?

            Maybe I should have worded it more "I can't imagine the Chinese wouldn't be able to bribe the right people or steal the right information to acquire the French companies turbine tech" instead.

            France should give China it's turbine tech as payback for the AUKUS plot

        • 1 month ago
          Anonymous

          >yet havent seemed to put it into practice
          because you don't know where to fucking look.

    • 1 month ago
      Anonymous

      Unironically because the metallurgy is fucking hard. To elaborate on anon, the big names in aircraft engines have histories that are over a century old and date back to the turn of the 20th century at the latest. This is a sort of knowledge that takes generations to cultivate and China essentially started from scratch in the 1950s. That China has gotten as far as it has is a compliment to their ability rather than a damnation of it.

      This. The tech behind making single crystal turbine blades (you heard that right, the metal doesn’t have a grain) is an extremely closely held trade secret by those who know. Patents would expose the tech. Its not just making a single crystal blade, but making it single crystal and hollow so bypass air is redirected through each blade and out of the vents along its surface to form a cool air sheath so it can withstand the insane heat and pressure. The metallurgy, the processes behind the metallurgy and manufacture, and the design is all very tight lipped stuff.

      • 1 month ago
        Anonymous

        Additionally, this is why China tried to buy out MotorSich a number of years ago. While Soviet/Ukrainian/Russian engines aren't the best, being able to bring over engineers and have them divulge all their know-how and set up local manufacturing processes would boost China's efforts by decades.

        • 1 month ago
          Anonymous

          and its the one section of manufacturing europe and america has over them, so we keep it tight.
          they get mad about it in some of their fiction.
          Definitely a certain amount of fantasizing about taking those abilities for themselves going on there.

      • 1 month ago
        Anonymous

        Additionally, this is why China tried to buy out MotorSich a number of years ago. While Soviet/Ukrainian/Russian engines aren't the best, being able to bring over engineers and have them divulge all their know-how and set up local manufacturing processes would boost China's efforts by decades.

        To add: The alloys to make state-of-the-art single crystal turbine blades are tailor-made for their growth properties, which takes an established R&D foundation to achieve. Not only that, even state-of-the-art turbine blades still need to be coated to reliably deal with the extreme temperatures that modern jet engines need in order to achieve greater efficiencies in fuel economy and power. This, also, means you need an established R&D foundation in material science to achieve. Last that I've heard, is the Chinese WS-15 loses 18%-20% thrust when at operating temps due to failure of the turbine blades.

      • 1 month ago
        Anonymous

        >is an extremely closely held trade secret by those who know. Patents would expose the tech
        funny how all the institutional oligarchs talk about saving the environment and impose crippling regulations that demand extreme efficiency but wont share their technology that makes engines more efficient and force people to pay out the ass for their tech

        • 1 month ago
          Anonymous

          interesting take

        • 1 month ago
          Anonymous

          Cope chink

    • 1 month ago
      Anonymous

      Unironically because the metallurgy is fucking hard. To elaborate on anon, the big names in aircraft engines have histories that are over a century old and date back to the turn of the 20th century at the latest. This is a sort of knowledge that takes generations to cultivate and China essentially started from scratch in the 1950s. That China has gotten as far as it has is a compliment to their ability rather than a damnation of it.

      https://i.imgur.com/ANAa7pg.jpg

      [...]
      This. The tech behind making single crystal turbine blades (you heard that right, the metal doesn’t have a grain) is an extremely closely held trade secret by those who know. Patents would expose the tech. Its not just making a single crystal blade, but making it single crystal and hollow so bypass air is redirected through each blade and out of the vents along its surface to form a cool air sheath so it can withstand the insane heat and pressure. The metallurgy, the processes behind the metallurgy and manufacture, and the design is all very tight lipped stuff.

      Theyve been saying it for 20 years yet havent seemed to put it into practice. Like a lot of stuff over there, it’s all pretense. Every year it seems theres a defense article saying “now china has single crystal blade engine tech!!”, but their engines still underperform. Years go by like this with no change.

      [...]
      To add: The alloys to make state-of-the-art single crystal turbine blades are tailor-made for their growth properties, which takes an established R&D foundation to achieve. Not only that, even state-of-the-art turbine blades still need to be coated to reliably deal with the extreme temperatures that modern jet engines need in order to achieve greater efficiencies in fuel economy and power. This, also, means you need an established R&D foundation in material science to achieve. Last that I've heard, is the Chinese WS-15 loses 18%-20% thrust when at operating temps due to failure of the turbine blades.

      https://i.imgur.com/OnUL28N.jpg

      They barely have a "functional" turbofan engine in 2022 (WS-13, comparable to RD-93, sbetter output but slightly worse MTBF. Better Fadec and burns cleaner tho) but it's an engine for light fighters like L-15 or JF-17. They still couldn't figure out a better design than WS-10 for their bigger jets with WS-15 having shit service life

      I'm sure they already figured out how to grow single crystal metal now (there are several research papers about that made by chinese universities that's available on sciencedirect) but the next thing they need to figure out is how to design an efficient high bypass turbofan because upscalling RD-93 isn't going to cut it

      >MUH SINGLE CRYSTAL SEKRIT TECHNOLOGY!!!!
      This is peak reddit. You have literally no idea what you're talking about, shut the fuck up. And no, I don't like chinks either.

      t. mechanical engineer

      • 1 month ago
        Anonymous

        ? Achieving precise single crystal casting of alloys used in turbine blades on an industrial level is still a complex matter. It's not peak reddit, it's no longer state of the art, we've long since moved to ceramic-ceramic composites but to call it trivial is retarded. Achieving the creep rates required is even more difficult. China is still as of yet in the infancy of achieving this technology. It is true however, that while they've been playing catchup, the US has moved on to researching industrial scale fabrication of dense ceramic-ceramic composites with low creep rates above 1250C which already vastly outstrips metallic alloys and single crystal superalloy turbine blades are an outdated technology in the west.

        • 1 month ago
          Anonymous

          Like you poors of 4ch know anything about that topic, it's no different to woman babbling about essentials oils on facebook. Like you ended up here because you're poor, uneducated and come from shit family and then write gems like this? Know your place sucker don't make me cringe early in the morning.

          • 1 month ago
            Anonymous

            Right, and just because I don’t mention my degree because I think my statements stand on their own 2 legs without appeals to dubious authority means I’m an uneducated hic. Sure. Why don’t you post some proof then of the Chinese having the technical capability to cast single crystal superalloy turbine blades on an industrial scale with the precision required for high performance jet engines. Just because every western manufacturer and their mothers can and regularly do it, for civilian applications at that, doesn’t mean the technology is trivial and certainly doesn’t mean the Chinese can do it. Also, what makes you, a mechanical engineer an authority on material science and manufacturing? Just because you took an undergrad course on structures and you know what crystal structures are and can name the different types of defects doesn’t make you an authority on jet engine manufacturing. Go ahead, refute any of what I said gay, otherwise you’re just some cocky undergrad with absolute confidence in his coursework.

            • 1 month ago
              Anonymous

              >I don’t mention my degree
              Why would anyone with degree end up on 4ch and PrepHole among all places? Are you sick? What is wrong with you? What is you dysfunction?

              • 1 month ago
                Anonymous

                >hurr durr you dumb poorfag no education me mechanical engineer educated yes
                >hurr durr why you educated man on 4chins
                I take back the undergrad thing, you’re just a zhang shill with no education.

              • 1 month ago
                Anonymous

                anon, everyone is poor and stupid on 4ch otherwise they would not end up here in the first place.

              • 1 month ago
                Anonymous

                Circular logic is circular.

          • 1 month ago
            Anonymous

            >I don’t mention my degree
            Why would anyone with degree end up on 4ch and PrepHole among all places? Are you sick? What is wrong with you? What is you dysfunction?

            anon, everyone is poor and stupid on 4ch otherwise they would not end up here in the first place.

            Never before have I seen such projection.

            • 1 month ago
              Anonymous

              That he writes "4ch" is kind of a clue he's a bug shitter.

        • 1 month ago
          Anonymous

          Show diploma or fuck off

          Single crystals are not the futuristic exotic wonder material that you think they are. Fuck off, retard.

          • 1 month ago
            Anonymous

            Length of WS-15 developmemt and rollout suggests that at best, their processes are fucked and don't produce consistently useful components. The ones they can use probably don't last as long as they should. With such large scale production capability they'd have all the J-20s on them if they could actually build the engines fast enough. They can't.

          • 1 month ago
            Anonymous

            >futuristic exotic wonder material that you think they are
            Yes they are you contrarian tourist gay. Or rather, DOING IT RIGHT is. As other anon said that while sure, West is pushing into new stuff, this is still one of those things where "oh I got 90% of they way there" is very different from 95%, 97%, 99% and 100%. In a military fighter application which is as demanding as it gets 99% vs 100% matters. And being able to do it consistently, in large numbers. Wanderwaffen are worthless, it has to be something you can do enough of to produce thousands of engines. It's not "magic" but it's hard work and has huge amounts of analog trial and error.

            Again it's like chip fabbing. It's easy to state the theory and do basic stuff. But when you're in a "3 atoms is too thin and 5 atoms is too thick" situation how do you ACTUALLY accomplish that? Consistently, in the billions of units?

      • 1 month ago
        Anonymous

        Show diploma or fuck off

      • 1 month ago
        Anonymous

        If you don't get the importance of single crystal turbine blades that still allow for "cool" bleed air for film cooling, you should eat your degree right now.
        -t Aerospace Engineer

        • 1 month ago
          Anonymous

          I am well aware, as well as the topology optimization methods that go into into designing the cooling channels, and the EDM/ECM techniques used to bore them, but acting like single crystals are an advanced technology is really dumb.

          • 1 month ago
            Anonymous

            That just makes it more embarassing that the PLAAF can't get it right.

            • 1 month ago
              Anonymous

              I'm pretty sure they have though, and it's been reported on, but OP is a big booty latina who is getting paid by the national guard to spam propaganda on PrepHole when she should be riding my cock.

              • 1 month ago
                Anonymous

                What are the actual numbers delivered though? This isn't the Russians we're talking about here, the only reason China wouldn't have all the J-20s on WS-15 is if the engines don't exist yet.

              • 1 month ago
                Anonymous

                >This isn't the Russians we're talking about here, the only reason China wouldn't have all the J-20s on WS-15 is if the engines don't exist yet.
                the problem isn't the fucking SINGLE K-K-K-KRSTAL BLADES you fucking turd.

              • 1 month ago
                Anonymous

                You just said you were pretty sure they had done something that they obviously have not done. I don't think I care about your opinion anymore. You've probably greatly exagerated your expertise.

              • 1 month ago
                Anonymous

                >that they obviously have not done
                bro you realize China has been fabbing single crystal allow blades since the early 2000's, right?

                Or metallurgy is hard and the chinks are notoriously bad at it

                sure, but you have no fucking idea wtf you're talking about.

              • 1 month ago
                Anonymous

                >Can't even speak english, expects people to trust him as an authority.
                Why can't China produce WS-15s?

              • 1 month ago
                Anonymous

                They can. And they will.

              • 1 month ago
                Anonymous

                But they haven't. Why? Don't feel like it? Don't need it? Or maybe... No turbines?

              • 1 month ago
                Anonymous

                see

                [...]
                [...]
                https://www.globaltimes.cn/page/202203/1254846.shtml

                FYI the WS-20 is already in service with the Y-20B.

              • 1 month ago
                Anonymous

                See

                Theyve been saying it for 20 years yet havent seemed to put it into practice. Like a lot of stuff over there, it’s all pretense. Every year it seems theres a defense article saying “now china has single crystal blade engine tech!!”, but their engines still underperform. Years go by like this with no change.

              • 1 month ago
                Anonymous

                Theyve been saying it for 20 years yet havent seemed to put it into practice. Like a lot of stuff over there, it’s all pretense. Every year it seems theres a defense article saying “now china has single crystal blade engine tech!!”, but their engines still underperform. Years go by like this with no change.

                They can. And they will.

                https://www.globaltimes.cn/page/202203/1254846.shtml

                FYI the WS-20 is already in service with the Y-20B.

              • 1 month ago
                Anonymous

                see [...]

                That's a transport aircraft. Pretty irrelevant to the conversation tbh.

              • 1 month ago
                Anonymous

                did you even read the fucking article you mouthbreathing turdbrain?

              • 1 month ago
                Anonymous

                >https://www.globaltimes.cn/page/202203/1254846.shtml
                Yeah it says something we've all known, WS-15 is still in testing.

              • 1 month ago
                Anonymous

                Or metallurgy is hard and the chinks are notoriously bad at it

              • 1 month ago
                Anonymous

                proofs?

        • 1 month ago
          Anonymous

          >Aerospace Engineer
          Post your Tesla, rzr and Waverunner

      • 1 month ago
        Anonymous

        dude, your undergrad BSe degree and experience doing engine Cals for Ford or whatever don’t really give you special insight here. Fuck, I’ve done geometric design work on for blades used on civilian turbofans, and I don’t posses any more insight into those arcane manufacturing processes than my current lab techs

        • 1 month ago
          Anonymous

          *work on blades

  4. 1 month ago
    Anonymous

    I don't know. Why are you asking us? Do you think any chinese aviation engineers lurk on PrepHole, or do you think any of the people here have any in-depth knowledge on the development of modern fighter jet engines? Or were you trying to just start an argument with people online?

  5. 1 month ago
    Anonymous

    Communism

  6. 1 month ago
    Anonymous

    They barely have a "functional" turbofan engine in 2022 (WS-13, comparable to RD-93, sbetter output but slightly worse MTBF. Better Fadec and burns cleaner tho) but it's an engine for light fighters like L-15 or JF-17. They still couldn't figure out a better design than WS-10 for their bigger jets with WS-15 having shit service life

    I'm sure they already figured out how to grow single crystal metal now (there are several research papers about that made by chinese universities that's available on sciencedirect) but the next thing they need to figure out is how to design an efficient high bypass turbofan because upscalling RD-93 isn't going to cut it

    • 1 month ago
      Anonymous

      >RD-93

      I mean RD-33. RD-93 is cleaner burning because russia also figured out how to to design better Fadec

    • 1 month ago
      Anonymous

      High percentages of the research that comes out of China is completely fabricated. They've had years where 80% of all Chinese medical research was outright falsified. You really can"t take anything they publish at face value.

      • 1 month ago
        Anonymous

        >80% of all Chinese medical research was outright falsified
        Doubt that since Chinese life expectancy is now higher than burger one.

        • 1 month ago
          Anonymous

          According to who though? Probably not the guys launching themselves off of factories or having cadmium dumped in the local river. Chinese life expectency is like East German orgasms.

          • 1 month ago
            Anonymous

            Yeah man, they must be lying... no other sane explanation.

            • 1 month ago
              Anonymous

              Yeah probably. Chinese culture heavily emphasizes lying and cheating to get ahead, and authoritarian politics deeply encourages that. And again, you see the proof in stuff that vomes out of China, like knockoff autompbile parts and research papers.

              • 1 month ago
                Anonymous

                This is your brain on pol

              • 1 month ago
                Anonymous

                Nah

              • 1 month ago
                Anonymous

                you should make all caps posts at this point anon.

              • 1 month ago
                Anonymous

                >https://www.caixinglobal.com/2021-03-31/china-was-the-source-of-370-retracted-scientific-papers-nature-reports-101682757.html
                >https://www.abc.net.au/news/science/2018-09-13/the-fake-science-trade-inside-chinas-research-black-market/10238730
                >https://www.wsj.com/articles/chinese-research-papers-raise-doubts-fueling-global-questions-about-scientific-integrity-11593939600
                What's it like to be genetically predisposed to theft and fraud?

            • 1 month ago
              Anonymous

              >National Health Commission of the PRC
              Trusting figures released by the PRC's government bodies is not a rational thing to do. They've been caught lying repeatedly, both internally (party officials trying to look good for clout) and externally (propaganda for external consumption). Even when external bodies are allowed in to check things out their access is limited to the point where they're just guessing based on cherrypicked data given to them.
              All. CCP. Data. Is. Propaganda. Period.

              • 1 month ago
                Anonymous

                >Trusting figures released by the PRC
                I trust those more than burger ones especially from Trump administration times.

              • 1 month ago
                Anonymous

                That's fine for you but you're basically alone in that. Chinese scientific reputation is a fucking wasteland.

              • 1 month ago
                Anonymous

                Sure, but in burgerland you've got orgs allowed to do their own research and broadcast it without it (or them) being disappeared. So you have alternatives, and the government can't say shit that's blatantly false without NGOs or private citizens speaking up.
                It's dumb to blindly trust anything any government says, but the PRC's put blinders on their people with the heavy internet censorship and media control. People in power lie, and the more power they have the more heinous the lies they can get away with.
                also, poorly thought out whataboutism. It'll be something about the garden gnomes running all the media making everything up next

            • 1 month ago
              Anonymous

              If you take the Obese Americans out of the equation... The two nations would not compare.

              • 1 month ago
                Anonymous

                >REEEE IF YOU DON'T COUNT UNHEALTHY AMERICANS THEN AMERICANS WOULD OBVIOUSLY BE MORE HEALTHIER THAN CHINKS REEEE

                bro you a dumbass

        • 1 month ago
          Anonymous

          Amerifats aren't having abscesses removed from their bodies regularly anon.
          I was shocked when I heard that this was a regular occurrence in China because of poor food and water standards.
          I've literally never heard of anyone I know needing this done.

          • 1 month ago
            Anonymous

            >Amerifats aren't having abscesses removed from their bodies regularly anon.
            because Amerifats don't care. They have lost all human dignity.

    • 1 month ago
      Anonymous

      >They barely have a "functional" turbofan engine in 2022 (WS-13, comparable to RD-93
      tell me when WS-10A reached IOC. Go ahead you worthless muttard.

  7. 1 month ago
    Anonymous

    China can't into materials science. Do you think the unsafe buildings and "chinesium" were just memes?

  8. 1 month ago
    Anonymous

    Shit’s expensive yo

  9. 1 month ago
    Anonymous

    Define "good" engine - they have enough faith in their engines that they've got a few hundred jets flying with them.

    They appear to be as good as Europe (France, Britain) in terms of jet engine reliability and better than Russia having leapfrogged over them.

    Definitely atleast ~15 years behind America though.

    They deserve praise for what they've achieved in the past few decades - going from no aviation industry to end-to-end production of fighter jets is no easy feat.

  10. 1 month ago
    Anonymous

    Compared to US? They're still a couple decades behind. Compared to the rest of world? On par or slightly ahead.

  11. 1 month ago
    Anonymous

    Its pic related. Their intelligence community has the western secrets but are withholding them. When the engines get competitive through sheer Sinic persistence they will drop the secrets and in 2 years the Chinese engines will be way better, like compellingly better. Market was owned, do not misunderestimate.

  12. 1 month ago
    Anonymous

    Short answer: Really shit metal.
    Long answer: for some strange reason, despite having a 1000 year head start in steel production, the chinese of the People's Republic of China have lagged behind their peers and predecessors alike in the field of metalurgy. The steel they produce ends up having a significant amount of contamination to the point where products and tooling made from such metals would go out of spec or break down entirely after mere months of normal use. This would over time introduce severe imprecision in pretty much every product made in China that isn't a tin can.

  13. 1 month ago
    Anonymous

    Because they are subhuman barbarian insects.

  14. 1 month ago
    Anonymous

    Even in mature Western processes the yield on blade manufacture is frequently as low as 50%, and the evaluation processes for QC on finished blades are expensive and challenging. It is very easy for microscopic flaws on the interior of a blade to lead to an early catastrophic failure that causes a loss of aircraft. In China where concept of 'quality control' is as foreign as concepts of 'empathy' or 'decorum' this is large problem; applies to many safety-critical components.

  15. 1 month ago
    Anonymous

    alloys, they can't into the type of top of the line metallurgy available in the west

  16. 1 month ago
    Anonymous

    High performance low bypass turbofans are really fucking complicated that need very strict tolerances when it comes to parts and their metallurgy and high spec ceramics manufacturing.
    When you see those pricetags on fighter jets most of it are from the engines

  17. 1 month ago
    Anonymous

    A great proverb for this dead thread,
    "9 women cant make a baby in 1 month"

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