Chapter 469 Legendary model!
Professor Liu readily accepted Gao Zhendong's blatant "extortion". It was a rare opportunity.
Gao Zhendong’s initiative made Professor Liu very interested. In his opinion, Gao Zhendong had basically never touched this specific mechanical structure. In their place, Gao Zhendong almost always Provide guidance in the general direction.
So he immediately agreed to Gao Zhendong’s proposal and wanted to see Chief Engineer Gao’s strength.
Furthermore, the drum magazine issue does not affect the overall progress of the entire project too much. He has to thank Gao Zhendong for not requiring it to be compatible with both magazines and belts like the M249. That thing is really both necessary and necessary. Typical, the final effect, haha...
But he didn't expect that Gao Zhendong didn't ask for anything from him. He just asked for a structural design drawing of the magazine mouth of a new gun and left. He didn't even ask for a training bullet, and he didn't know that Gao Zhendong was involved in the design process. How is it verified?
Third Rolling Mill Militia: What do you think I have?
He knew that Gao Zhendong could definitely do it, whether it was good or not was another matter, but he never expected that Gao Zhendong would be so quick and bring the results in less than a month.
At first glance, it seemed to be no different from the RPD magazine, but as soon as he saw the exposed spring handle, Professor Liu realized that this thing was not simple, at least compared to the one of PPsh41.
This external spring handle allowed Professor Liu to immediately understand Gao Zhendong’s intention. This thing can put the bullet up first, but it does not wind up. In this case, the spring is not affected by the wind. It is strong and can effectively prevent problems such as permanent deformation caused by long-term stress on the spring.
When you need to use it, wind it up a few times in advance. This little time can be squeezed out no matter what when preparing for battle.
This method solves the contradiction between early loading and reliable ammunition supply.
Gao Zhendong actually didn’t do anything special. He just copied the 81 matching drum drum from his previous life. As for machining, it’s not like there’s nothing in the factory.
There is a standard answer out there, so why bother?
Professor Liu opened the drum. At first glance, the structure inside is divided into two sections by a pick plate or a pick fork composed of two layers of steel plates. It has a slide with the PPsh and no other fixings. The parts are different.
After looking at it twice, it seemed to be ordinary. Professor Liu knew that nothing could be determined without using live ammunition.
He turned to his student and asked him to load the drum and try playing the drum a few times.
Professor Liu’s students took over the drum and felt the difference between this thing and the PPsh41 as soon as they loaded it. This drum is loaded with the warhead downwards, or in other words, the side that can be disassembled is the bullet. bottom direction.
Put several rounds of bullets into a grid with the bullets facing down. The student shook it vigorously and was surprised to find that the bullets were well fixed.
He continued to load the ammunition. At this time, everyone discovered a difference between this structure and the PPsh drum drum. In the former, the bottom of the ammunition must be aligned with the bottom chute and put in. In fact, loading is a bit slow.
But Gao Zhendong is different. For each square, he only needs to throw the bullet downwards into it. There is no need to pay special attention to the position and alignment. At most, it is for each square. When loading the last bullet, it is smooth and orderly. That’s it.
One word, quick!
What is a quick-loading drum? This is called quick loading drum!
Soon, the student loaded all the bullets, and the speed was much faster. After the bullets were almost loaded, the student even shook the drum twice without any instruction, and the bullets suddenly disappeared. It seems very neat.
After a few fiddles, the bullet was pushed into the bullet-holding port, and then the last few rounds were added. Only then did everyone realize that this drum was different from the second one they copied. The bullet was inserted into the bullet-holding port. Although the outer dimensions of the magazine mouth are the same as those of the magazine, there are some small steel structures inside, so that the bullets still enter in a single row here.
Professor Liu looked at it and yelled out.
“Ah, this matter is solved like this? And the width of the bomb holding port is used to make the angle of the chute entering the bomb holding port smoother? We are really stupid, we are still thinking about what to do To solve the reliability problem of double row and double feed, I didn’t expect that you just don’t need those bullets and change it to single row and single feed to solve the problem. Mr. Gao, you are really ingenious.”< br>
Gao Zhendong didn’t say much, he just smiled and said: “We’ll talk about it after we beat it, we’ll talk about it after we beat it, haha.”
Several people from Beijing University of Technology looked at each other, well, what Mr. Gao said is reason.
Win up the drum drum, insert it into the sample gun, lie down, and then give the order from Professor Liu.
"Shoot!"
"Da da da da da da..." The shooter held Huo'er in his arms and splashed water first to see the effect of the continuous fire.
The 75 rounds of bullets could not be fired for long in this fully automatic mode. Soon, the gunfire stopped.
The students quickly gathered around and took down the drum.
There was no jammed bullet, but it was impossible to count how many shots were fired. The comrades at the scene were not immortals, so they had to dismantle the drum drum to see if there were any remaining bullets.
If there are remaining bullets, it means that the bullets are not jammed, that is, although some bullets are not jammed, they do not enter the barrel of the gun in the expected way and are fired. Instead, they circle around in the drum and do not come out.
Opening the back cover of the drum, everyone took a closer look. No need to look carefully, just look at the color. It was dark, with no trace of yellow on the bottom of the drum. Everyone breathed a sigh of relief, it was all polished. !
Comrades from Beijing University of Technology, continue without saying a word!
They installed the drum magazine many times, and tried all the shooting modes including continuous fire, short burst, long burst, single shot and so on. There was no malfunction and it was as smooth as oil. Wrong handle: Applying oil is actually not easy to use.
Professor Liu cheerfully extended his hand to Gao Zhendong: "Mr. Gao, pay with one hand and deliver with the other. You give me the drawings and I'll treat you to dinner, hahaha."
Don't worry about whether this thing has any flaws. , at least eight blocks better than the one designed by my team. The original one almost used the machine gun as a rifle.
John Bull L85: It’s a hand-operated machine gun, I’m familiar with this.
And so far, Professor Liu has really not thought of any flaws. Take this gift, take it.
Invite guests to a meal. Treat guests to a meal. This kind of meal makes people happy.
Gao Zhendong took out a stack of paper from his bag and handed it to Professor Liu.
Professor Liu reached out and took it, looked at it carefully for a long time, and then sighed: "You are just turning it over. What is installed in the guide groove is the bullet tip. This reverse direction solves many structural problems. For example, when guiding the bottom of the projectile, it is necessary to leave enough space to make the guide groove partition, but not the projectile tip. There is already a large space between the projectile tips, and the problem of projectile looseness caused by the taper problem is also solved. , interesting."
Gao Zhendong smiled: "I am just a little smart, not worth mentioning."
Professor Liu looked at him with a look of displeasure. "Are you being modest or are you scolding me?"
Gao Zhendong was speechless: "Let's go, eat, eat."
The group of people laughed. Professor Liu was willing to pay for this meal, and Gao Zhendong ate it without any burden.
——
The next morning, with Lou Xiaoe seeing him off, Gao Zhendong got into the factory car on the side of the road not far from the courtyard and headed for the airport. Go, go to the Northeast Optics Institute to see the optical system.
Time is limited, it would be too wasteful to drive there, and the journey is far away, and there is the possibility of accidents. It is different to fly directly.
Along with him were a comrade from the fifth unit of the No. 3 rolling mill, and a comrade from the technical department of the No. 3 rolling mill majoring in mechanics. This optical system will eventually be installed on the machines of the No. 3 Factory, and this comrade is responsible for taking charge of this matter.
This time, he also went there with Gao Zhendong first to familiarize himself with the optical system and see if there was anything that needed improvement from a mechanical perspective.
Flying these days has little to do with money. Those who can take it don’t need to think about money themselves, but people with a lot of money can’t easily afford to fly.
For people at this time, being able to take a plane ride is not considered a great honor, but it is no exaggeration to say that it will be a great talking point within ten years.
Standing in front of the plane, the two comrades accompanying him looked excited. Looking at Gao Zhendong’s calm expression, they admired him. Mr. Gao was still well-informed and calm. gas.
Actually, what Gao Zhendong was thinking in his heart was: "It's a ride on this thing. I have flown on a plane in my previous life, but I really don't dare to think about this plane."
What was in front of him was a single-propeller engine aircraft. It was not big. Its biggest feature was that it had two layers of wings, making it a biplane.
This aircraft is the famous flying tractor, a light transport aircraft copied from Lao Mao Zian-2. It was successfully copied in 1957 and has a lot of output.
Although this nickname may sound quite disrespectful, it is actually a compliment.
This thing is so easy to use. Before Gao Zhendong traveled through time, it was still in use, and its improved version was still in production.
As for why it is called a flying tractor, the main reason is that it flies slowly, makes a lot of noise, and vibrates a lot. Moreover, it also has characteristics that are very similar to a tractor.
——This thing can be started by hand!
Although it can be started electrically, it is thoughtfully equipped with a hand-cranked starting device, which can even start the engine by hand when parking in the air.
What Gao Zhendong saw now was such a dark green legendary aircraft.
As a military fan, Gao Zhendong has admired this thing for a long time, and now he has seen it.
Gao Zhendong walked around the plane several times, as if he wanted to write it down. At this time, the rules of flying were not that big.
Gao Zhendong walked around a few times and got on the plane happily. He was dumbfounded when he got on the plane. It looked like two rows of benches facing each other with seat belts. There were no backrests or cushions.
Gao Zhendong wiped a cold sweat in his heart. This trip may be uncomfortable for a while, although the route is only about 900 kilometers long, which is not far for an airplane.
But this plane is different. The cruising speed is only 140~220km/h. It takes four hours to fly even with all the strength.
(End of this chapter)