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Chapter 661 Toys (Second update)

Liu Hai first wrote a title, Pump Technology Theory!
Then I continued writing. Pump propulsion is a method of propulsion that uses the power of water to generate thrust.

It uses a pump to accelerate the water flow, and then sprays the high-speed water flow through the nozzle to generate reaction force to push the ship forward.

Compared with propeller propulsion, pump propulsion has higher efficiency and lower noise.

In fact, in 2020, many submarines and ships have adopted this pump push technology.

Whether it is a pump push or a shaftless pump push, it is a jet of water.

After Liu Hai made a theoretical summary, he also planned to draw pictures.

The principle of pumping technology is not very complicated. To put it bluntly, it uses the rotation of the impeller to push the water flow, and then uses the thrust of the water flow to push the submarine forward.

This pump technology has a shaft in the middle, blades around it, and a cover outside the blades.

The blades push the water out from behind the cover, generating powerful thrust.

The shaftless pump technology is actually a large motor. There is a coil on the entire cover and a rotor inside. Unlike the traditional rotor with a shaft in the middle, this rotor has no shaft in the middle, but an impeller.

The motor drives the rotor inside to rotate, and the impeller above the rotor rotates and drives the water flow. This is a shaftless pump.

Of course, bangs now just come up with the pumping technology.

By 2020, our country will have a great advantage in the propulsion system of ships.

The third generation of ship propulsion technology is called all-electric propulsion technology.

Even the Ford aircraft carrier in the Liuhai aircraft carrier space does not use an all-electric system. This time because the power of Western countries lags behind ours.

Especially in terms of medium voltage, high voltage, and DC, the world's most advanced power technology is ours.

This is a typical example of coming from behind because of the wrong direction. Of course, in the West, it is also because of the mistakes of capital.

The West fell into a misunderstanding in the early days. Alternating current was originally very good, but due to some powerful people, the West adopted direct current in the early days.

We are also ahead of the curve with lasers and radars, which we directly adopted as active phased array radars.

So by 2020, our ships are already launching third-generation all-electric systems.

"Do you want to make a real thing?" After Liu Hai finished writing the theory, he came to prepare a drawing.

When I thought about drawing, I wondered whether I should make the bangs.

But after thinking about it, I let it go. The main reason is that the structure of the submarine is too complicated. Of course, it can be made simpler.

After all, in 2020, some people use submarines to sell flour. The technical structure of such submarines is simple.

That kind of submarine uses fiberglass technology and puts some batteries directly inside.

But that thing is also very powerful, it can transport 7 tons of cargo at a time.

It is said that the most advanced one is more than 30 meters long and can carry 200 tons of cargo. Moreover, this thing can also evade the most advanced maritime radar of Bald Eagle. Of course, it is hard to say whether it can really evade it.

It is said that it can operate underwater for 2 to 3 weeks and sail at a speed of 7 to 11 knots per hour.

Of course, this kind can be called a submarine or a semi-submarine.

There is no big problem in making this kind of bangs, and it can be made even more advanced than this.

As for the shaftless pump technology, Liu Hai did not cover it because Liu Hai had to take out the brushless motor first.

After working in the aircraft carrier space for more than 6 hours, I finally wrote out the theory and drew a simple diagram.

It takes more than six hours in the aircraft carrier space, but less than five minutes in reality. One hour and forty minutes, only one minute passes outside.

Liu Hai simply ate something more and then took a nap.

Then he came out and returned to the attic, took out what he had written, and prepared to hand it to Sun Aiguo tomorrow morning.

Thirty is like a wolf and forty is like a tiger. Although I worked overtime with the widow next door until the early morning last night, the widow next door came again tonight.

Fortunately, my bangs are hanging, so I can go to the aircraft carrier space to rest midway.

The next day when Liu Hai went to work, he went to the office and copied the things he wrote in the aircraft carrier space yesterday.

In the afternoon, Liu Hai directly submitted the theoretical proposal for pumping technology he wrote to Sun Aiguo.

"Ah, so fast!" Sun Aiguo was also stunned by Liu Hai's speed.

"It's just a rough theory. The main reason is that making these underwater things is too complicated. I want to make something simpler, but it doesn't make sense." Liu Hai said.

"You mean we can make it simpler?" Sun Aiguo became excited when he heard this.

"Of course you can make something simpler..." Liu Hai nodded.

"Then let's build it and conduct scientific experiments."

"Leader, this is very troublesome and involves a lot of things. What we created is just a big toy." Liu Hai said.

"It's not like we want to build a real submarine. Toys are just toys. Our shipyard is empty now anyway. What does the toy you're talking about look like?" Sun Aiguo asked again.

Liu Hai heard this and said: "It's no problem to build one that's about 20 meters long and can hold several tons of stuff. However, this kind of thing can only sail very shallow under the water's surface and cannot dive deeply."

"How many tons? How fast?"

"Six to seven tons, maybe ten knots."

"What about battery life?"

"About half a month."

"Uh!" Sun Aiguo felt pretty good after hearing this data.

"What materials are used?"

"Just use fiberglass?"

"Uh!" Why did Sun Aiguo feel a little unreliable when he heard Liu Hai's idea?
But this is unreliable, and it feels right.

This is unreliable. For others, it is really unreliable, but for Liu Hai, it is reliable.

"Why don't you just treat it like a toy?" Sun Aiguo thought it was unreliable, and that's right.

"But this doesn't seem to be of much use?"

"Just treat it as a toy."

"Okay then." Liu Hai couldn't figure out why the leader would let them do these things as they were a bit unreliable.

However, Liu Hai thinks it can be done, and when science and technology develop in the future, he will develop unmanned submarines.

Liu Hai believes that unmanned technology will be used in various fields in future wars.

Drones, unmanned ships, unmanned submarines, unmanned tanks, and the Army even has robot dogs and the like.

Everyone thinks that these surface ships are on the water, that is, there are no blind spots in 360 degrees.

In fact, everyone has understood it wrong. If the ship is really as powerful as the legend says, then why is there still a possibility of collision?
Any weapon or equipment that is exaggerated will eventually be slapped in the face.

From the earliest F117, it was highly praised, but what happened after the actual combat?
There are also some people who boasted that the tank's active defense system provided 100% defense during the test, but after a real fight, it was like opening a can.

And the s300 and s400 are also overhyped.

Everyone thinks that radar scans 360 degrees without blind spots. In fact, radar scans at an angle and has dead spots.

And like this semi-submarine, there are no traces visible on the water and it is difficult to find.

In addition to its small size, it is also made of materials such as fiberglass. To describe it this way, radar is like using a flashlight at night. It is not like the sun shining during the day, illuminating 360 degrees around you.

After coming out of Sun Aiguo's side, Liu Hai went to the turboshaft engine workshop.

Sun Aiguo felt that bangs, a big toy, might not be effective in dealing with other aspects, but it shouldn't be a big problem in dealing with the one across the sea.

Of course, it still depends on the overall performance of this big toy and its application in subsequent tests.

As for the brushless motor bangs, let’s put them aside. In fact, the earliest brushless motor was invented in 1955.

As for what you later saw in the news media about the invention of a certain death row prisoner, it would be good for everyone to take a look at it, because there are too many loopholes in it.

It's just that a certain director wants to achieve some results, and this patent exists, but this patent also has many problems.

The related theories of brushless motors can be traced back to the 1900s.

What Liu Hai has to do is to take out the rare earth permanent magnet motor, which is the rare earth neodymium iron boron.

This kind of motor is one size smaller than the same three-phase asynchronous motor.

And this kind of motor has many advantages, such as long life, low heat generation, etc.

This kind of motor is widely used in electric vehicles in 2020.

In the evening, Liu Hai went to his wife's house to have dinner. She didn't have any objection to Liu Hai coming to eat every day.

"Oh... no more copying!" Liu Hai returned to the courtyard in the evening, and after entering the aircraft carrier space, he read some magazines here and there.

There are various articles about submarines in magazines, but they only have a general appearance.

So the bangs can only be designed according to this shape.

Since it is a toy, then follow the idea of ​​​​a toy.

"But if this thing is sold to South America now... ahem, toys, toys!" Liu Hai suddenly thought of the small single-person airplane he designed in his early years.

Originally, Liu Hai had no motivation to do this, but thinking that these toys could enrich the lives of Bald Eagle citizens, Liu Hai felt motivated.

The rough shape is based on the rough proportions of the submarines in magazines.

Anyway, it's just a disposable big toy, so just use fiberglass, plywood and other materials.

The transmission device directly uses batteries, motors, and generators.

As for navigation, just use simple chart navigation, no sonar equipment is needed.

Because this thing is just below the water surface and does not dive into deep water.

What if there is an accident? If an accident happens, it will happen. Whoever wants to improve in the future will do so.

However, for those large customers in South America, the simpler, the better, and the simpler, the lower the cost.

It just so happens that the Bald Eagle has developed so well in recent years that people's lives are empty, lonely and cold.

Of course, the bangs are designed using professional design software, and then copied after the design is completed.

In late October, the design of Liu Hai's toy submarine was completed, with a length of only 10 meters. The next step was to make a mold, which meant that the entire premise was made using fiberglass molds.

In 2020, Liu Hai saw that people in South America could make it in the jungle with simple equipment.

Not to mention the current strength of motorcycle factories.

Liu Hai handed over the design drawings of the mold to the equipment department. He still had something to do, which was to start the final assembly of the super helicopter.

The super helicopter's turboshaft engine prototype has undergone 300 hours of testing and has no problems at all.

The subsequent turboshaft engines will be ready for final assembly on the aircraft after being tested.

In the assembly workshop, Sun Aiguo and other big leaders came one after another.

Everyone looked at the super helicopter, and such a big guy also looked happy.

With a length of 30 meters and a height of nearly 6 meters, it looks like a giant in the workshop.

Liu Hai still stood aside with a walkie-talkie and listened to the commander's instructions. He did not personally direct.

The final assembly starts at 8 a.m. and is completed after 11 noon, because everything else has been done long ago and is just waiting for the engine.

The weather in late October is already cold, but everyone's heart is extremely hot.

After the final assembly is completed, everyone rests for a while and then eats.

I didn't bother to rest even after eating, and then conducted debugging and testing of various systems. After the testing was completed, the super helicopter was dragged out with a trailer and went to the test field outside.

This is not the first time to test-fly a helicopter, and everyone is familiar with it.

Liu Hai nodded as he listened to the skilled command and operations of various departments on the intercom.

The people watching Liu Hai are outside the safe area and are far away.

After the others finished their preparations, they also stayed away. When testing a helicopter, you have to stay away because no one knows if anything will happen to it.

As the commander issued the start command, Liu Hai and others looked at the helicopter.

A plume of smoke came out of the turboshaft engine, and then the rotor began to spin slowly.

When both rotors spun rapidly, everyone applauded.

The test that day went very smoothly. Of course, it was just a ground test now, mainly testing the engine performance, as well as the control system, power system and other systems.

The ground test lasted for a week, mainly because some parts needed to be debugged.

In early November, the super helicopter began formal flight testing.

When the super helicopter slowly flew up, hovering at a height of 50 meters, then flew forward and turned.

The first test flight lasted half an hour, and then the aircraft had to be inspected and maintained.

Then Liu Hai added a gold medal.

"Oh!" Junior sister looked at the medal Liu Hai got back and was extremely happy.

The wife and the teacher looked at the gold medal that Liu Hai was holding and did not ask what the super helicopter was, but they could imagine that it was not an ordinary thing.

"Come on, eat more!" While eating, the teacher put a big piece of pig's feet in his bangs.

"Thank you, teacher!"

"It's hard enough for you if you don't speak the same language as one family."

"A piece of cake."

"Our family wants to go back to our hometown this year. Do you want to go back with us?" Zhu Haiyang suddenly asked.

"Go, go back!" Liu Hai nodded. Since the teacher asked this, he definitely wanted to go by himself.

"Will you arrange the time or shall I arrange it?"

"Teacher, please make arrangements. I don't have any big projects here this year." Liu Hai nodded.

Within a few days, Zhu Haiyang saw a different helicopter with two rotors, and it was much larger. It was flying at the aircraft testing ground of the motorcycle factory in the distance.

"This is a super helicopter!" Zhu Haiyang guessed after seeing this scene.

(End of this chapter)