Recently.

Zhang Nan spent most of his time in the sky.

As a test pilot, he almost gave up his promise in order to fly a plane with perfect performance.

On average, it flies 12 hours a day, lasting more than a month.

In the first place, the screws are prone to loosening, and parts often fall off - it takes a week to solve it.

Then there is the adjustment of the aerodynamic structure, and several pairs of wings are replaced every day to see if they can fly faster - it took nearly half a month.

There is also the problem of weight loss in the aircraft. Due to the small power, the aircraft weighs more than 3 tons, so it cannot fly too much. The empty weight must be cut below 2 tons, and then a 600-horsepower engine can fly out of a speed of about 700 kilometers per hour.

The range can also be increased.

However, Yang Mengchao led his men to work hard for a long time. He chopped left and right, but he couldn't complete the weight loss index. The limit was about 2.5 tons and he could not cut any further.

"If this aircraft does not have a flight speed of more than 700 kilometers and a maximum range of about 5,000 kilometers, I think it will not be competitive in the market. If it flies too slowly, it is better to take a special passenger plane; the range is too short and it will be very troublesome to transfer. I also have to spend time learning to fly and repair the plane and serve this guy, so the ease of repair must be very excellent, and it cannot be more difficult to repair than a car..."

Zhang Nan put forward many ideas and suggestions, and some of the hard requirements put forward were even harsh.

Yang Mengchao really wanted to say that he couldn't do it, but he had to admit that what Zhang Nan said made sense.

Customers are often picky.

Some products need to have 100 advantages before they decide to buy them.

But it may also give up buying a certain product because of the disadvantage of just one.

Especially when there are many similar products on the market and can compare prices, only the product with the best comprehensive performance or the best cost-effectiveness can stand out and gain the favor of customers.

So it is far from enough to just create a "flying" aircraft, and many other factories can do it.

Unless you are building a plane that is not only "can fly", but also can fly the fastest, have the longest range, good maintenance and the highest safety - at the same time, and build a truly good plane, you can gain a foothold in the market and not easily be eliminated by your competitors.

"As soon as you debut, you will be at a peak, Zhang Nan, you have given me a big problem."

Yang Mengchao said with a wry smile, feeling that the problem in front of him is not ordinary tricky.

Besides, Zhang Nan could not always stay in the "Mengchao Aircraft Manufacturing Factory" and be a test pilot here every day.

It’s May, and the rice in Zhangnan Farm is about to mature.

On the Shuqing Ranch, someone was also sent to send the first batch of Gelong beast-tailed eggs, with a total of 236.

So Zhang Nan had to temporarily put down the test pilot work here and return to the farm to work on his own affairs.

"Zhang Nan, can you come here every two or three days? There are many things here that really can't be without you."

When Yang Mengchao learned that Zhang Nan was going back, he said helplessly.

Zhang Nan is indeed indispensable to the aircraft factory.

Because this guy is a flying genius.

Several times, the "Mengfei Type 1" prototype crashed into the ground at a speed of more than 200 kilometers per hour, and the plane fell into N pieces, but the pilot Zhang Nan was unharmed, thus improving the robustness of the plane.

Another time, the "Mengfei Type 1" flew away half of the wings, and it was impossible to land, but Zhang Nan successfully landed the runway with a crooked success, and he accumulated a valuable "how to land the lost wings".

Bang! Bang! Bang! Bang!

The characteristic of Zhang Nan’s test flight aircraft is that it is very heavy every time it lands, and it hits heavily on the ground like a crash, and the control is also very rough. It often does various large overload maneuvers in the air, and rarely flies smoothly. It feels like tossing and tossing in the direction of being a mess.

But this is the characteristic of excellent test pilots, which is to mess up the plane. Only in this way can problems be discovered, improved, and all possible hidden dangers will be exploded instead of leaving them for customers to find.

In addition, many of the improvement suggestions put forward by Zhang Nan are all incisive and extremely useful, pointing out the right direction.

If Zhang Nan was not here, Yang Mengchao knew that his aircraft construction project would soon stagnate and would not be able to make faster progress.

"Instructor, this is how it is."

Zhang Nan knew Yang Mengchao's thoughts and concerns, and thought for a while: "There are three prototypes in the factory now. I will drive away the latest No. 3 prototype and continue to conduct test flights at Zhangnan Farm. If you want to take the workers to build a prototype, start from scratch and redesign it to see if the weight of the aircraft can be reduced at the design level. I will continue to provide data and suggestions. You can also take people to see it occasionally. How about this?"

"Okay, that's all."

Yang Mengchao nodded and said, "Zhang Nan is not a factory person, and second, he is not a full-time test pilot, so he can only adopt this compromise."

...

May 3.

Zhang Nan controlled the prototype "Mengfei Type 1" No. 3, flew back to his farm, and landed smoothly at the gravel drying yard.

Then he became busy.

On the 5th, the workers were led to harvest 10,000 mu of mature rice, with an average yield of 420 kilograms per mu, because the management was relatively rough and the yield was average.

Then the workers immediately ploughed out 15,000 mu of paddy fields, and planted all the rice again - all the white light particles were integrated.

Then Zhang Nan immediately had five thousand acres of rice fields that could be planted, about 25 million white light particles.

compression.

Compress with all your strength.

Even so, even if he exhausted all his mental power every day, Zhang Nan could only compress more than 300 green light particles (the green light particles compressed on the first day were immediately integrated into the 236 Gelong Beast Eggs).

——Consumes 300,000 white light particles.

That is, only 1.2% of the white light particles can be compressed every day, and it takes more than 80 days to complete the compression.

But before that, Zhang Nande was wearing a super big belly, and even had to be swelling all over his body, looking like a fat man with a height of more than 200 pounds.

How could Zhang Nan accept that his appearance has dropped so badly?

Most of the about 20 million white light particles were stored in a "storage room" on the fourth floor of the villa, almost filling the entire room, and then remotely controlled with mental power, and they were not allowed to automatically return to the body unless they were summoned on their own initiative.

besides,

During the process of taking time to test flight No. 3 prototype, perhaps it was an inspiration or a whim. Zhang Nan actually attached millions of white light particles to every part and component of the aircraft, and even the surface of the fuselage wing was densely covered with more than 100,000 white light particles.

It turned the entire plane into a white and shining plane, which was very dazzling.

By the way, what is Zhang Nan doing?

The plane was just a dead object. What did it do if it was attached to so many white light particles? And it couldn't get any light energy, life energy was cut.

Zhang Nan is doing an experiment.

Yes, the plane is indeed a dead object, but the white light particles are a very magical "sensor". As long as they are integrated into the plant body, Zhang Nan can clearly and keenly sense the growth state of a certain plant - as long as he has all his strength to perceive.

What if white light particles are attached to an aircraft part?

Can the working status, stress status, and metal fatigue status of the part be also perceived?

Zhang Nan immediately tried it.

Millions of white light particles turned into millions of micro ‘sensors’, spread throughout the body of prototype No. 3, and then began to test flights.

Flying in the sky.

Release mental perception with all your might.

Then--

All the things Zhang Nan saw changed.

He seemed to be integrated with the plane, and as if he understood his own body, he understood the situation of various parts of the plane.

Wind speed, pressure, and temperature flowing through the surface of the wing.

The working condition of each cylinder in a piston diesel engine.

The pressure on the body frame.

Metals in a certain area are accelerating fatigue.

Some of the structures are too strong, resulting in overweight.

Everything is like every cell in his body. Zhang Nan feels everything clearly, which is more accurate than the situation simulated by a supercomputer.

It only took a short while to fly.

For those places that should be improved, those places should be strengthened or reduced - Zhang Nan found at least hundreds of small places that need to be adjusted.

After returning to the ground.

Zhang Nan took out the toolbox and immediately devoted himself to the improvement work.

You should know that he is now very strong. He can carry more than two tons of aircraft directly, and he can unscrew many screws without using tools.

In addition, it can also emit laser light with the right hand for welding, material reduction, shape modification and other operations.

Plus, it is comparable to a supercomputer to a white light particle sensing capability.

Zhang Nan alone took only one month to make thousands of improvements to the No. 3 prototype.

The aerodynamic shape has been renovated to the perfect level.

Even the empty weight was smoothly controlled to 2105 kilograms, reducing weight by more than half a ton.

Extreme flight speed is 815 km/h.

The maximum range is 5225 kilometers.

In other words, relying on Zhang Nan's extremely primitive "hand-made polishing", he improved the No. 3 prototype to a level that tends to be "perfect".

But just when Zhang Nan wanted to call Yang Mengchao and tell him about this surprise.

Ring ~

Yang Mengchao, who hadn't contacted him much for a month and had never met him, took the initiative to call him and said excitedly:

"Zhang Nan, it's done! The No. 4 prototype has been built, exceeding the weight loss indicator you mentioned. We have found a perfect material imported from the Kingdom of Freich, called "carbon bamboo". This bamboo is very hard and will never be damaged for thousands of years. Its hardness and toughness are far greater than that of steel. Our material experts have extracted a kind of carbon bamboo wire from the "carbon bamboo" material. It is not only light but also has a performance comparable to T800-grade carbon fiber."

"Now with this carbon bamboo silk material, it can be used on the fuselage and wings, the weight of the aircraft's structural weight can be reduced by 30%, and the import cost is not very high."

"So our aircraft construction project will definitely be successful! We will definitely create a perfect aircraft that meets the performance standards and customers like!"

Zhang Nan was shocked.
Chapter completed!