Ivanov: "No, no, no. The hovercraft uses a gas turbine, which is different from the engines of cars, helicopters, and fighter jets. The predecessor of the 10,000-horsepower gas turbine is the turboprop engine used by strategic bombers. The turbine engine has more turbine power. The ground cover is used to drive the propeller, not to generate strong reaction force. It is more demanding than the engine of a fighter jet, so you are starting from scratch."
Others couldn't help but pull their hair secretly: they were going to die. Do it again? ! !
Car engines were developed once, motorcycles were developed again, then airplanes, then helicopters, tilt-rotor aircraft, automobile vortex engines, etc., and now hovercrafts have to start all over again.
But there is no use complaining.
Moreover, the mold casting, welding technology, and manufacturing technology of various materials and parts of "Wenjun Industrial" are now countless generations more advanced than when they were studying automobiles.
What's more, there are now detailed drawings, original ships, and guidance from professional technicians. They have also made assault boats. Isn't that just a matter of copying what goes on?
So-easy!
Facts have proved that as passionate as you are when planting the flag, you will be very heart-wrenching when you pull it down.
The mold is accurate enough and there are drawings, but the finished product just doesn't work.
This is completely different from making an assault boat.
Such as welding.
According to the drawings, the hull is integrally welded with high-strength, corrosion-resistant aluminum-magnesium alloy. All welds must be able to withstand tearing and twisting due to the impact of waves, and must also have perfect corrosion resistance.
This technical difficulty is so difficult that Zuo Bowen and Qian Zhuolin are very interested in it. They sit in the welding laboratory and the aluminum-magnesium alloy laboratory all day long and watch, and they have to be urged to go to eat.
Qian Zhuolin's mentor heard about it and immediately sent several of his disciples and disciples to participate in the research. The name was to assist the senior sisters and junior fellow students, but in fact they were eating and drinking and mixing professional skills.
Qian Zhuolin couldn't laugh or cry: The old man scolded her mercilessly, and he didn't blush at all when he took advantage.
There was so much excitement this time that Dong Qingjun was so confused that he didn't know where to look first.
So he bought a dice, with one dot representing the welding laboratory, two dots representing the aluminum-magnesium alloy laboratory, and so on.
When he entered the park every morning, if he thought the one he saw yesterday was interesting, he would go to that one next.
If you can't decide where to go first, just throw the dice and whatever comes up counts.
Today he tossed the dice to the side where he was going to weld. As soon as he went there, he saw two senior welders having a heated discussion. Then the Ukrainian welding technician listened in confusion and had no idea what the two people were saying. Wow, what's the noise?
He quickly moved a stool over and sat next to the Ukrainians to listen together, and then translated for the Ukrainians while listening.
"This fillet weld is absolutely not possible. For such a small component, all the components need to be welded, and two more are required. The welding rod is heavier than the component itself."
"Then what do you say? There are so many small components on such a large plate, and it is impossible to pour it as a whole. The plates themselves have to be connected together by welding."
The Ukrainian suddenly said quietly: "You know about friction stir welding, right?"
The Chinese technician blushed: "I've heard of it, but I didn't have the chance to learn it."
"That one was invented by Chinese people in 1991. They applied for a patent, but we didn't have the opportunity to contact it."
The Ukrainian welder said: "The weld of friction stir welding is completed by extrusion in a plastic state and is a solid-phase connection. Because there is no metallurgical liquefaction and then solidification process, there will be no cracks, inclusions, pores and burning loss of alloy elements. Welding defects and catalytic phenomena, the weld performance is close to the base metal, and the mechanical properties are excellent. Now we can use the straight welds for flat plate butts and overlaps, as well as the fillet welds for connecting small components to large plates. this."
Chinese technician A: "So, you can?"
Ukrainian welder: "That's necessary. It's our basic skill."
Chinese technician B: "You can teach us. I'll treat you to roast chicken later."
Ukrainian welder: "Two meals of braised pig's trotters and a bottle of Wuliangye."
Chinese technician A: "Deal."
Another example is the engine.
After reading the material test report, Ivanov shook his head directly: "Your materials are not good, so you have to use tungsten alloy. In addition to tungsten alloy, the materials for each part of the engine are different, and you don't have them. If you can't come up with these materials, you will never We can’t make a qualified engine.”
Then Han Weijun did not hesitate to invite the old director and the directors of the AB institute, and said to Ivanov: "What kind of tungsten alloy do you want, and what special materials will be needed for each part in the future? Please let me know at once." They, better make a list.”
Ivanov began to talk: "The combustion chamber uses Inconel, the turbine nozzle uses chromium-cobalt-tungsten carbide, the fan uses nickel-based high-temperature alloy, and the hull is made of high-strength seawater corrosion-resistant aluminum-magnesium alloy. The key strength components are all An aluminum alloy with a relatively low density but high hardness must be used. The rubber of the air cushion apron must be resistant to seawater corrosion, as well as wear-resistant, high-toughness and high-elongation..."
The three directors listened and took notes. It is said that as soon as they returned, they each found a sofa to lie down on.
Everyone was very worried and asked them one by one what was wrong.
As a result, all three of them said they didn't want to live anymore. They would never be able to finish this job in their lifetime, and they couldn't even think about retiring.
Li Wenjun hurriedly went to comfort the three directors: "I have contacted the National Institute of Metallurgy of Ukraine and hired their experts to provide guidance. Moreover, the research and development and manufacturing of this hovercraft is inherently difficult. It will be very difficult to achieve complete independent manufacturing within five years. Not bad.”
Director of Institute A: "I don't feel any comfort after listening to your words."
People like Li Wenjun think it will take so many years to do it well. You can imagine how difficult it is.
Old director: "It's over. That means I won't be able to retire within five years."
Director of Station B: "You can pull him down. Once this is done, he will have another one."
Li Wenjun said: "Of course, what I'm talking about is that it may take five years to make it, run it and improve it until it can be put into use."
Then there was wailing again.
Everyone said: Can’t we just make money with our existing products?
Why must we keep challenging ourselves?
To be honest, the current products are leading globally, let alone in China.
But Li Wenjun still said the same thing: "Sail against the current, and if you don't advance, you will retreat. No one will say hello to you until you are abandoned by the times and the market. We still can't even make a working electric shaver."
All factories were speechless. It seemed that all factories were responsible for this matter and could only do it honestly.
