Bright Sword Military System

At the Taiyuan Automobile Repair Shop, He Zhimin and Professor Su were discussing the MiG-15 prototype that they had spent a month developing.

Taiyuan Auto Repair Factory, referred to as "Taiyuan Auto Repair", is where Yan Laoxi opened an aircraft factory to produce aircraft.

At the beginning, Yan Laoxi was worried that the Central Army would find an excuse to "recruit" him because of his big tree, so he secretly built airplanes under the name "auto repair shop."

Later, Wang Xuexin bought a jet engine and a Meteor fighter production line from Sunset, and borrowed this factory to continue producing aircraft.

After all, the facilities here are complete and most of them are used for aircraft, such as fuel depots, hangars, backup power, etc. It also has its own airport for test flights.

Putting the aircraft production line in this way can save the Eighth Route Army's limited funds to a great extent.

Originally, Wang Xuexin wanted to correct the name of the aircraft factory. After all, using the name "auto repair factory" could easily lead to misunderstanding.

Because from time to time, auto soldiers do drive broken down cars here to repair them... Automobile soldiers are not very familiar with the situation in Taiyuan. In this era, there is no navigation and can only rely on asking:

"Fellow, where is the auto repair shop?"

"Where's the auto repair shop? Go straight here. When you get to the end, turn left and head east. You'll be there in seven or eight miles!"

"Oh, thank you, fellow!"

Then he dragged the broken-down car "rumble" along this road. Finally, when he arrived at the end of the field, he was dumbfounded... This damn auto repair shop actually repairs airplanes.

To be precise, I am not one who repairs airplanes, but one who builds them.

This is not just one or two cases, it happens several times a week.

Because of this, Wang Xuexin wanted to change the auto repair shop to "Taiyuan Aircraft Manufacturing Factory" so that there would be no misunderstandings and unnecessary trouble.

But the headquarters did not agree. The leader said: "Yan Laoxi wanted to paralyze the stubborn army back then. Today we also have this need! Otherwise, the stubborn army will look jealous, and maybe something will happen again! Besides, this It can also add some trouble to the Japanese spies!"

Wang Xuexin thought it was right, so he continued to use the name "auto repair shop".

Since the Eighth Route Army was already able to produce jet engines and had a production line for the "Meteor" fighter aircraft, a considerable part of the "MiG 15" produced at this time was pieced together with existing parts. In addition, Wang Xuexin provided The drawings were so detailed that it took just over a month to produce.

Professor Su looked at the plane and pointed at the wings and asked doubtfully: "Lao He, have you seen such an airplane before?"

He Zhimin shook his head: "This is the first time!"

Professor Su is referring to the angle of the wings of the "Mig-15". Its sweep angle reaches 35 degrees, making it a swept-wing fighter.

It was normal that He Zhimin had never seen it before. There were no swept-wing fighters at this time.

To be sure, there is, but it is Hans's M262, which has not been put into combat yet so it is unknown.

The "Mig-15" in history is not the first practical swept-wing fighter. It came out slightly later than the Eagle Sauce.

But now, the "Mig-15" can be regarded as the first practical swept-wing fighter.

Professor Su looked at it for a while and then asked again: "Can this thing fly?"

He Zhimin took a deep breath and replied: "There should be no problem with flying, it's just..."

He Zhimin didn't know how to explain it either.

"What is it?" Su Xin asked.

"It may be dangerous!" He Zhimin replied: "And it may be very dangerous, because the control of this aircraft may be different from all our previous aircraft! It is brand new and requires pilots to learn on site!"

Su Xin looked at the plane in front of her curiously. In her opinion, it seemed to be no different from other planes except that the wing angle was larger.

"Is there any reason why its wings are designed like this?" Su Xin asked everyone's doubts.

"I just heard about it!" He Zhimin explained: "There is a theory in aircraft design. It says that when the speed of a straight wing reaches a certain level, its vertical resistance will be very large. We call it Act as shock wave resistance. If the wings are swept back at an angle, the arrival of the shock wave will be delayed as the speed increases, making it easier for the aircraft to exceed a certain speed limit!"

This theory was proposed by a Hans scientist before World War II and caused a sensation among scientists around the world.

However, because there was no engine that could reach this speed at that time, it only existed in theory and could not be put into practice. It was also considered useless in the military, so it was not taken seriously.

This is also the reason why the ME262 produced by Hans became the first swept-wing fighter. Hans immediately realized the importance of swept wings after getting a jet engine, so he called the young scientist named Boozman He was found, and then a place that was both convenient for confidentiality and very comfortable was provided for him: the Brunswick Forest for his research and experiments.

This swept wing design can not only delay the arrival of wave drag but also improve the stability of the aircraft during high-speed flight.

The disadvantage is that it is more difficult to control, especially when maneuvering at a large angle of attack, and it is easy to stall.

From one point of view, test flights are indeed dangerous because the test pilots have no idea that this aircraft has this shortcoming.

Su Xin seemed to understand: "So, this design is to increase the speed of the fighter plane!"

"You can say that!" He Zhimin replied.

He Zhimin has a rigorous attitude, because his theory has not been verified, so he is not sure.

Then He Zhimin said: "Isn't it too dangerous for us to let the pilots fly like this?"

"Lao He!" Professor Su said: "The leader said that this is the model that Mao Xiong has tested!"

"But that's a bear test!" He Zhimin objected: "We have to be responsible for our own pilots!"

Professor Su was silent for a while and then replied: "Let's put it this way, if it were in peacetime, I would definitely agree with you. But now it is wartime. You know the situation of our army's 'La 5' fighter plane. It has a range problem. For a time, we were unable to expand our results and were even suppressed by the enemy!"

When Professor Su said this, He Zhimin became silent.

"Emergency times call for extraordinary measures!" Professor Su added with a heavy face: "For us, time is life. If we conduct long-term tests for the lives of one or two test pilots, it is likely to lead to more changes on the front line. Too many pilots have died! We are not saving people, we are harming them, do you understand?"

He Zhimin nodded silently.

He, who has always been rigorous, has to admit the fact that speed is everything in wartime.

Sometimes speed is worth risking, even if it means the pilot's life.

Thinking of this, He Zhimin nodded and said: "I have no problem. You can report it to the leader!"