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The engineering mechanics calculation program of the Ministry of Water Resources did not kill the super calculation, but the weather forecast program broke the super calculation.
Because many parameters of the weather forecast program cannot be simplified, and the accuracy of the calculated values cannot be reduced. If the accuracy of the weather forecast is reduced, the accuracy rate will drop sharply, which is much more serious than the calculation of engineering mechanics.
But in any case, high-frequency digital processing chips are on the agenda. Although it is still a 10-micron process, the chips used in the first megacomputer are more primitive than the 4004, which relies on tens of thousands of chips and a frequency of 80MHz. to achieve billions of calculations.
"Minister Tang."
Liu Nai, Minister of Machinery Industry, made a call from Dalian.
"Type 55 submachine gun, the first batch of mass-produced by Jianxin Company has come out, do you want to take a look?"
Tang Hua: "It's not bad, it's not delayed at all. Didn't it say it should be called a Type 55 automatic rifle?"
Liu Nai: "Our technical materials and operation manuals all say that they are called automatic rifles, but the commanders and fighters of the army can't change their words. Let's make a transition for a while."
Tang Hua: "It's too troublesome to go from Beijing to Dalian. It's a big detour. I know that your ministry and bureau are holding a joint expert meeting, but it doesn't matter. You can organize a three-party meeting to discuss. In the end, I will definitely see it in the State Planning Commission. report."
……
Now there are four firearms arsenals in Dalian, Shenyang, Taiyuan, and Chongqing. Among them, Dalian Jianxin Company began to develop and deploy during the Liberation War. Now it has the best hardware equipment and the strongest research and development force. Therefore, the domestic imitation of AK-47 is the first task. Handed over to Dalian.
It is also because of the best equipment base that the first batch of "1956-punch" guns were originally made in 56, and now it is Dalian Jianxin's "55-punch", or 55-style.
The venue for the joint meeting of experts, leaders, and troop representatives of the First Aircraft Bureau is building a new company's light weapons range.
At this time, the leaders and members of the research and development team of the First Machinery Bureau were basically old Eighth Route Army. Liu Nai himself was also a veteran military engineer of the Eighth Route Army.It was said to be a meeting, but one of them held a 55 style, and started to play with it.
Liu Nai grabbed a handful of 7.62X39 rifle bullets from the magazine, unloaded the magazine, and pressed the bullets into the magazine one by one.
After pressing more than 20 bullets, I walked to the shooting position, pulled the bolt, aimed for a while, and put down the gun. "This gun feels good, but there is no bayonet."
"Have you ever seen a submachine gun with a bayonet on it?"
"I've seen it before. Little Japan has submachine guns."
"Older ones, there are also flower organs."
"Why didn't the flower mechanism I got back then..."
……
"Actually, the AK-47 has a bayonet, but we haven't had time to imitate it," said Zhang Liankui, director of the First Machinery Bureau. "Moreover, this is a Type 55 automatic rifle, not a submachine gun."
"Bang! Bang!"
Not far away, a cadre simply loaded the bullet and went to the shooting position, and he just shot and enjoyed himself.
"How is the accuracy of this gun? Is it not as accurate as the 50 semi-automatic?" Liu Nai asked.
"I don't think it's semi-automatic, but it's definitely more accurate than a submachine gun."
"That's not necessarily true. I have used the original Soviet AK-47. It is quite accurate when it is semi-automatic."
Zhang Liankui: "Why don't we test it on the spot."
The guards quickly found two Type 50 semi-automatic rifles, and the leaders and experts who participated in the joint meeting acted as testers themselves.The two testers first fired 50 rounds with 10 semi-automatic rifles, then changed targets and guns, and fired 55 rounds with Type 10.
There were gunshots one after another in the valley.
A few minutes later, the four targets were retrieved. There was not much difference between the semi-automatic shooting accuracy of Type 50 and Type 55. The researchers participating in the meeting measured for a long time. I am afraid that this comparison test is not very authoritative.
……
"Comrades, the Type 55 automatic rifle still needs to undergo four tests. After passing the test, it will be finalized and put into production. The weapon of our infantry squad will take shape."
After playing with guns for more than half an hour, Liu Nai formally presided over the meeting.
55式量产配发部队后，步兵班的枪械就是1挺50式轻机枪、2支55式自动步枪，其余战士装备50式半自动步枪。
In battle, light machine guns and automatic rifles are the pillars, and three combat teams can be formed. A typical example is an inverted triangle formation in which a light machine gun battle team is in the rear and two automatic rifle battle teams are forward on the left and right wings.
Sniper rifles and 40mm rocket launchers are not organized in the squad, but in the company or higher-level organization, and they are only strengthened downward when the battle requires it.
The ammunition of the three light weapons in the squad is completely common, but there is no gun familyization, and there is not much commonality of parts.
Liu Nai: "Our plan for the next-generation technological innovation of infantry squad weapons is to officially launch the project in 1960 and finalize around 1965. The current infantry squad's 'three-piece set' will be produced stably for a period of time."
Yu Daowen: "The next generation of infantry squad weapons, what can be done now? Planning, demonstration, or some conceptual design?"
Liu Nai: "When the General Administration of Ordnance Industry was still under the Ministry of Heavy Industry, Tang Hua once said that firearms do not seem to be high-tech, but in fact they are very scientific and technological. Liu Xuechang and I engaged in August 51st sniping As for rifles, since they got it in [-], they should have felt this sentence very much.”
Liu Xuechang: "Indeed, the design and manufacture of a small rifle are not simple."
"The next generation of rifles means to be one generation more advanced than our current 'three-piece set'," Liu Nai said. The Chemical Industry Bureau. The Chemical Industry Bureau is responsible for the research and development of a new generation of propellant. With the new propellant, we design a new bullet; with the new bullet, we design a new generation of squad weapons.”
"Minister Liu, it would be great if the new bullets have better accuracy," said Zheng Heling, a military representative from the Ordnance Department of the General Assembly.
张连魁：“根据一线指战员的反馈，我们收集了很多意见。50式半自动步枪主要集中在有一些部队希望挑选一些精度比较好的50半加装瞄准镜，这样班组内就可以有狙击手。……也有一些部队对它的供弹方式提了些意见。然后我们希望在55式下发部队之后，在2到3年的时间里收集部队对55式的使用意见。”
……
The result of the discussion at the firearms joint meeting is: if you want to eliminate semi-automatic rifles in the squad and equip them with fully automatic rifles, then you should improve the accuracy, which is significantly higher than the Type 55.
Now many veterans are liberated in the ordnance industry system, and the unanimous opinion of the ordnance industry department is that they are very keen on the accuracy of the rifle. This can be seen from the reputation of the Type 81 sniper rifle among these people.
Regarding the popularization of automatic rifles, they also put forward the opinion that "the accuracy must be good".
When Tang Hua saw the report, he understood why the Type 63 automatic rifle was born back then.
In addition to squad light weapons, this joint meeting also discussed the issue of continuous use of machine guns.
Now the army's continuous machine guns, the troops that participated in the War to Resist US Aggression and Aid Korea and completed the refitting use the Guoliunov/domestic Type 53 heavy machine guns, and almost all the troops are still using miscellaneous heavy machine guns.
Guoliunov with two small wheels looks like a strong World War I/early World War II style, and it should not be mass-produced at this time.
In 1954, the Soviet Union provided China with the physical objects and drawings of the RP-46 light machine gun. In 1955, after the withdrawal of the Soviet garrison in Dalian, hundreds of RP-46s were obtained again.
RP-46 is to change the turntable feed of the DP light machine gun into a chain feed.
But the leaders and experts present at the meeting did not like RP-46.The continuous firepower of the ammunition belt is strong enough, but the ammunition chain box cannot be hung on the gun body, it has to be placed next to the machine gun, and it is very troublesome when the machine gun needs to move the firing position.
Either one person moves the gun and the other carries the ammunition chain box, and the two have to walk side by side; or the shooter first releases the ammunition chain from the gun, lifts the machine gun by himself, and has to re-lock the ammunition chain when he arrives at a new firing position.So troublesome, is it still a light machine gun?
At this time, the MG42 general-purpose machine gun seized by the North Vietnamese People's Army from the French army and then presented to China inspired Yiji Bureau.
RP-46 is quite light in weight.Add a tripod to the RP-46, use a bipod + a small chain box when you need to move quickly, use a tripod + a large chain box when you need to shoot continuously, isn’t it a general-purpose machine gun?