BC886 is a top-secret document about guns, in fact, at the beginning of BC, and XA began with many information meetings, all of them are in the secret base of Yinshan, based on Yang Yuanzhao's forward-looking vision to develop things, at the beginning, artillery, armored vehicles, tanks and aircraft, but these have entered the sequence of the Northwest Army, and began to play a role in enhancing the strength of the Northwest, under Yang Yuanzhao's approval, another wave of new research began.

BC886 is a secret base, the preparation of anti-aircraft machine gun information, BC at the beginning, basically army weapons, and XA at the beginning of the Air Force weapons, as for the Navy, is H at the beginning, compared to the army and the Air Force, his weapons are few, but very important, aircraft carrier project, escort air defense cruiser project, sonar project and towed radar project.

Many projects are just an empty, a vision of the plan, the time span is too large, the level of science and technology is far from the same, many projects are just a forward-looking proposition, but under the support of materials, many projects are just prototypes, but they have achieved breakthrough development, such as radar, sonar, anti-aircraft machine guns and anti-aircraft guns.

The reason is not it, their basic principles, in later generations, almost any qualified college student knows, not to mention engineering students, and the all-in-one machine for electronics, simply has an incomparable effect, restricting the electronics industry A vital problem is the yield rate, in the industrial means and technological improvement, has not reached a certain extent, the price of electronic products is very high.

However, the production capacity and replication capacity of the all-in-one machine are simply the natural main promoters to break through this boundary, as long as the laboratory can produce a relatively perfect tube. transistors, or even integrated circuits. The all-in-one machine can replicate thousands in an instant, compared to the large industrial machine tools. Electronic products, that is, relatively small.

Compared with ordinary machine guns, even if there is a range of more than 1000 meters, it does not mean that he can hit a height of 1000 meters, and the distance of level flight is up to the top. The distance of a certain height is completely different, it is good to be half, and some are even only a quarter, which requires special design, and to a certain extent, the requirements for materials are higher.

During World War II, the average 88mm anti-aircraft machine gun could easily penetrate the armor of a tank that a 120mm gun might not be able to penetrate. It became one of the killer features of the Soviet Union, which is the pride of the Soviet Union, but when you think about it for later generations, this is not a sad performance. The role of the anti-aircraft machine gun itself was for air defense, not for anti-tank, when the anti-aircraft machine gun had to be put down to fight the tank era. One can imagine what happened to their armored forces.

It stands to reason that anti-aircraft machine guns of this era. At most, it is to add up ordinary light and heavy machine guns with brackets. But that is neither professional, the trajectory can not be controlled, the air defense capability is almost equal to zero, this is also in the period of the War of Resistance against Japan, whether it is the Eighth Route Army, or the national army, there is a prohibition, in the face of aircraft bombing, only allowed to dodge, not allowed to fire at the aircraft, no professional anti-aircraft machine guns, for the aircraft to fire is useless, but will be discovered by the aircraft, causing unnecessary casualties.

The reason why Yang Yuanzhao laughed is because in many dramas in later generations, not only light machine guns, sniper rifles, but even ordinary rifles and pistols can fight planes, which makes him, who has become a superior, can only express it with a sentence hehe.

Northwest has an independent materials research institute, in the material, with an all-in-one machine, there is no shortage in the northwest, thousands of materials per day, through the all-in-one machine, to figure out the basic role of materials, Northwest materials research, has always been in the forefront of the world, and even some aspects, than the world's research results combined are much deeper. Some high-end materials used in special fields, high heat resistance and corrosion resistance have appeared, and materials with hardness and flexibility have reached a certain level, which can be used in large-caliber naval guns, and can be used in anti-aircraft machine guns and anti-aircraft guns.

Yang Yuanzhao knows very well that the future belongs to the era of aircraft, even if it is a ship, it must also pay attention to air defense, if a ship, without any air defense, will inevitably be eliminated by this era, even if it is as strong as the Yamato class, more than 70,000 tons of super warships, it is the same, the historical Yamato, the reason why it was sunk is the role of the aircraft, but at that time, under the continuous attack of hundreds of aircraft, divided into two groups, a full two hours later, this is sunk.

Among all the ships, the Fantasy class and the Orion have reserved positions for air defense, although there are not many, but the northwest is sparing no effort to open the research of anti-aircraft machine guns and machine guns. The largest anti-aircraft artillery fire is as high as 108 mm, and the 88 mm cannon is more balanced between attack and defense, and the materials used are also the highest level in the northwest, but there are too many systems, the foundation is weak, and the progress is relatively slow, and there is temporary progress, that is, anti-aircraft machine guns and ordinary small-caliber anti-aircraft guns.

After getting the report from Yang Yuanzhao, the staff officers quickly returned to the staff headquarters, and the top secret red header above represented that before, there were less than 20 people in the entire northwest who could access this file, of course, now there is Yang Yuanzhao's endorsement and signature, which is equivalent to decrypting this document, although it also needs to be classified at the level of C or above to be read, but officers at or above the school level, the Intelligence Bureau, and officers at a certain level of the Ministry of Foreign Affairs can also see it.

This is, in the two reports, the weapons talked about are slightly different from ordinary light and heavy machine guns, but they have not changed much, but the performance indicators on them are a little terrible, which is the largest 20.5 mm heavy anti-aircraft machine gun, which can hit a height of about 4000 meters.

In the research of the secret base, the original anti-aircraft machine gun was an ordinary machine gun, with an increased caliber and a thickened barrel, so as to obtain a higher muzzle velocity and a larger height to the maximum extent, but it concentrated many gunsmiths, coupled with Yang Yuanzhao's guidance like a convulsion, and finally the anti-aircraft weapon moved farther and farther away from conventional weapons.

Entry-level anti-aircraft weapons, was positioned at 12.7 mm, which is also the lowest caliber of anti-aircraft machine guns in later generations, after several systems of research, 12.7 mm anti-aircraft machine guns, the firing height reached about 800 meters, about two or three hundred meters worse than the advanced ones of later generations, but for low-altitude and low-speed airships, the threat is huge.

Of course, such weapons are extremely restrictive, because of the low speed of the airship, the general flight altitude is between 4000 meters and 5000 meters, and few airships will take the initiative to descend to an altitude of 800 meters, so this machine gun can only be used as an auxiliary.

In order to increase the range and altitude, the caliber must be gradually expanded, and in the follow-up research, 14.5 mm can reach an altitude of 1800 meters, which is basically usable, because if the airship wants to ensure the efficiency and accuracy of the bomb, it may have to be reduced to an altitude of 2000 meters, and it can even be actively guided down.

And the next 17.5 and 20.5 mm, the range reached 2500 meters and 3000 meters respectively, such a range can be enough to be satisfactory, in the staff department, many staff officers are excited, respectively, which one to give to the German side, some people are even considering, whether to deduct 17.5 and 20.5 first.

When this situation was reported to Yang Yuanzhao, Yang Yuanzhao was also a little crying and laughing, because he had already deducted it in advance, in his hands, there was also a BC887 document, which was a copy of the anti-aircraft cannon, which was a killer feature, and was currently relatively well made in the northwest, that is, a 25 mm cannon and a 35 mm cannon, but a 25 mm cannon, which can hit up to 6500 meters or more, and has a lot of lethality for unprotected targets within 4000 meters, as for 35 mm, He can even get 8,000 meters to the limit, and it has a lethal effect on targets within 5,500 meters with a certain amount of protection, these two are not aimed at the killers of airships, their targets are high-altitude and high-speed aircraft.

Yang Yuanzhao thought about it again and again, although he said, these anti-aircraft machine guns and machine guns are all made based on the materials of the northwest, under normal circumstances, they are not afraid of cracking, but the 25mm cannon is still too advanced, if it is given to Germany, the high lethality of 7500 meters, for the current propeller aircraft, there is a huge threat, or not to give, anyway, under the control of the difficulty of materials, it is unlikely to get a breakthrough, give 1000 meters first, And these anti-aircraft machine guns at an altitude of 2000 meters will do, that is to say 12.7 mm and 14.5 mm, which can be extended up to 17.5 mm, which is the limit.

Got the order of 250 airships, there is a substantial solution to the problems encountered by Germany, Yang Yuanzhao at the beginning of the principle, more and more recognized by the military and political sides in the northwest, after the start of the European war, the northwest industry has been developed by leaps and bounds, not only harvested huge orders, obtained enough profits, in the entire Chinese political environment, but also more and more relaxed, less Britain, France and Russia involved, the United States because of the European war distraction, for the time being, is not able to affect China, the northwest can continue to use small actions, Strive to unify the whole of China before the end of the European war.

Such a good environment, of course, must continue, and anyone with a discerning eye knows that Germany is almost single-handedly fighting against the entire Entente, and it is almost only a matter of time before the United States enters the war, and Germany can take Paris and get as many good things as possible from Paris before it can continue to arm Germany.

And it was only at this time that the staff officer asked whether the anti-aircraft machine gun was powerful enough and whether it could see the real thing. (To be continued......)