"What do you want to do?" Gan Tong was a little puzzled by Bai Shujie's decision: "Halfway up the mountain in Heiling is the penicillin production base, and in the cave at the foot of the mountain is the Ordnance Research Institute and the Chemistry Research Institute. ”

"My sister is such a sincere person!" Zhao Jinxi said with a smile: "She is arranging an air defense position for herself!" Sister, what kind of people are you in Germany? That's the country that has signed a treaty of friendship and alliance with the little devils, and if the little devils bomb here, Germany will have to speak! ”

"Also, to the north of Black Ridge is Miaoxiang Mountain, which is our most important airfield and our most important military base. The eldest brother builds a villa complex between the two, and the little devil has to weigh it, right? ”

Bai Shujie shook his head: "What Jin Xi said is just one aspect, and my fundamental starting point is not what I mean. Come to think of it, we are not a national government, just an illegal city of Pyongyang, right? To win people's trust and convince others that we are not liars, you need someone to come out and speak to you. ”

"We need to have a positive image internationally and have a certain impact, and the first thing we need to do is to be honest with each other. The biggest advantage of the Germans is that they are always meticulous in their work. What they promised, they will find a way to do it for you. I don't treat them as outsiders, and that's a crucial step in gaining people's trust. ”

"The thousands of students we send out to study need a respectable status and identity that will allow them to make friends extensively. Now it is a silent declaration. Besides, if you just want to keep it secret, it's only temporary, and it won't solve the fundamental problem. ”

After explaining his train of thought by the way, Bai Shujie suddenly remembered something: "Gan Tong, the sales are about to start, I asked you to supervise the printing of packaging trademarks, and how about making the military flag?" ”

Gan Tong nodded: "The samples of the Feilong trademark and the Feilong Banner have been passed to Wang Xinlan for registration abroad. The military flag is the flying dragon flag you designed. The flag is: a golden dragon on a red background, with five claws soaring into the clouds, implying that the flying dragon is in the sky. The military flag has been made all the way to the battalion level, and the key is to see when you will replace the military flag uniformly. ”

"Change the military flag and put it in the Spring Festival!" Bai Shujie pinched his fingers and calculated: "The 31st of this month is the Spring Festival, so on February 1, 1938, the Flying Dragon Military Flag will be officially activated." Remember, every one of our ships has to fly this flag, which is our identity to the world. ”

Thinking of the ship, Bai Shujie threw the matter at hand to Zhao Jinxi and Gan Tong, and soon disappeared again.

It turned out that since Wei Chong robbed the "Dagu Shipyard" and obtained a large number of German gun barrels, Bai Shujie took all the 20mm gun barrels out of the rifling line and stockpiled them.

He never found the 360-degree rotating chassis, nor did he find the artillery control system, so the matter has been delayed.

This time, Horst delivered the goods to the door, and Bai Shujie's long-awaited main accessories finally arrived, so he hurried to the "Weapons Research Institute" in Black Ridge.

There is a separate office for him, as well as two secret warehouses. Starting from the Three Immortal Caves in Chengde, he had his own real yàn room in the Weapons Research Institute, and now he has also moved here.

Now, four huge cylinders, made up of five steel pipes, sit on the desk. Two 36 rotating bases for quadruple M360 shipborne anti-aircraft guns are placed here.

Close defense array, this is what Bai Shujie has been studying.

The quadruple M36 40mm shipborne anti-aircraft gun, its automatic fire control system, was the ancestor of the later phalanx. Bai Shujie naturally could not use 40mm caliber artillery, and his real object had two calibers: 20mm and 30mm.

Now it's not about guarding against cruise missiles, it's about hitting planes, and at the same time taking into account the surprise attack on the enemy's destroyers, cruisers, and even battleships and aircraft carriers. So, the rate of fire is one aspect, and the range is another.

The Phalanx of later generations was mainly to defend against cruise missiles, with a rate of fire of 3000-4500 rounds per minute, so the range was only 1500 meters. Striking low-altitude aircraft by this standard is so-so, but against the enemy's surface ships it is waste.

The "deformation phalanx" that Bai Shujie needs is to reduce the rate of fire and increase the range.

The goals he set for himself were: a 20mm phalanx, which was mainly intended to be installed on future bombers (the current fighter load capacity is too small); The 30mm phalanx is for ships.

The specific requirements are: 20mm phalanx, combat rate of fire 450 rounds / min, range 2400 meters, cartridge box 720 rounds; With regard to enemy planes, it is necessary to "destroy them as soon as they are discovered."

30mm phalanx, combat rate of fire 300 rounds / min, range 3600 meters, magazine 1080 rounds. The main purpose is to strike at medium and low altitudes, raid the enemy's surface ships at close range, and use armor-piercing shells and armor-piercing incendiary bombs to kill and injure personnel and destroy equipment and weapon systems on the deck.

Theoretically, as long as the magazine is constantly changed, it will be possible to shoot without gaps. Of course, it is impossible to meet this condition in real combat, because the barrel cooling time, that is, the replacement of the next set of barrels, is required for 45 seconds.

More importantly, the load of the aircraft is limited, and there are only a maximum of 3 spare magazines. Surface ships don't matter, adding a weight of 5 boxes to 500 kg will not affect anything.

The first item that Bai Shujie wanted to test was that the five barrels bundled together should be able to rotate and fire to ensure that one cartridge box would not jam after firing.

In order to meet Bai Shujie's request, Huang Qiaoyun, the head of the guard regiment, specially sent an artillery platoon of 70 people. In the next three days, the shooting range in the dense forest of the back mountain was full of "sudden" and "swooping" all day long. According to Huang Qiaoyun's estimate, it is estimated that 3 tons of shells have been knocked out in the past three days!

In this process, one of the production lines of the arsenal is always ready to either adjust the way the barrels are tied or reprocess a certain component. Especially for all kinds of deformed gears, I don't know how much waste there is.

The second content of the real yàn is Bai Shujie's "copycat" fire control radar SCR-584 gun aiming system, which is now numbered "DW gun aiming fire control system".

The "DW Gun Sighting System" consists of two sets of antennas, which can automatically scan targets in a 360-degree azimuth, and then determine one or two targets to be hit first according to the target distance.

Bai Shujie is not a god, he can't track dozens of targets at once, how many of them are hit, and he doesn't have this kind of lofty idea.

At present, what can barely cope with is a set of "DW artillery aiming system", which can control two phalanxes at the same time and hit one or two targets at the same time!

It is better to cut off one finger than to hurt ten fingers, this is Bai Shujie's design guiding ideology. He couldn't tie 10 gun barrels together, but he used two phalanxes to hit the same target, which increased the density of fire in disguise.

It's not that Bai Shujie doesn't want to raise the rate of fire, but the quality of steel in this era can't meet the requirements. Increasing speed means reducing the firing range, which means constantly replacing the barrel, firing mechanism, spring blades.

It seems that the instantaneous rate of fire is very high, but in fact, it has no practical significance, if it is placed on the plane, it will simply become an iron lump of "one shot and no shot", this Bai Shujie is unwilling.

From this process, a motor prepared separately finally begins to participate in the process. Because the next step is already "semi-automatic" and "fully automatic" mode transformation.

The object of the blow was a scrapped locomotive, which was constantly moving along the light railway at a distance of 1,200-3,600 meters. Of course, three layers of 400mm thick iron plates were added to the hit surface as temporary armor.

After half a month of tossing back and forth, 5 tons of shells were fired, was it successful?

No, failed! The Phalanx did not fail, it was the "DW artillery sighting system" that failed.

Bai Shujie hoped that the "DW artillery sighting system" would be able to command two groups of phalanxes and simultaneously hit two targets in different directions, but it failed.

The most critical point is that the fire control radar SCR-584 gun aiming system belongs to the mechanical calculation mode, and it is not as powerful as the computer. It's good to be able to aim at a target!

So when shooting at two targets at the same time, there is always only one phalanx firing and the other one resting. In fact, it was the two phalanx that fired in turn, and this was the actual result of Bai Shujie.

"Damn, Lao Tzu is already very patient, but the result is still so ambitious!" After three days of careful deduction, Bai Shujie finally discovered the root of the problem: "It seems that it is impossible to strike multiple targets at the same time before computer technology matures!" ”

can only hit one target at a time, Bai Shujie finally gave up.

After careful calculation, a 30mm five-tube phalanx has a total combat weight of 2,750 kg (including 200mm shields), excluding the rotating base and 985 kg of shields.

A 20mm five-tube phalanx with a total combat weight of 2390 kg (including 200mm shield), excluding the rotating base and shield 625 kg.

One of the warships that Bai Shujie wants to be transformed as an experimental type is the Flying Dragon 301 destroyer (Hibiscus Maru), which has now been towed into the newly repaired dock outfitting platform.

Zhang Bingyang, commander of the detachment, did not know what the commander-in-chief was going to do, and in his opinion, the Flying Dragon 301 destroyer was already very good.

The destroyer has a base displacement of 820 tons and a full load displacement of 1100 tons; Main scale: 85.3 m (overall length) / 8.1 m (width) / 2.5 m (draft).

Power: 2 Brown-Curtiss single-stage reduction gear steam turbines, 3 Lum ship-based heavy oil boilers, 21,500 horsepower; fuel 371 tons; The speed is 35.5 knots, and the range is 3000 nautical miles / 14 knots. Crew: 110 people.

Firepower: 3 single-mount three-year 120 mm 45 times caliber main guns, firing range 24 km; 2 x 7.7 mm anti-aircraft machine guns;

Torpedoes: twin six-year 533 mm ×2, with 6 six-year torpedoes, 20 No. 1 mines; Deep bombs: 2 project×ors, 2 slide rails×, 36 deep bombs.

But Bai Shujie knew that the sonar system of the little devil's ship was a scum, so he later made the American submarine unable to fight back.

The use of submarines by the Little Devil Navy is at the same level as the use of tanks by the Army, which is equivalent to the kindergarten level and will not be considered for the time being.

The Wyvern 301 has a speed of 35.5 knots and a 120mm gun range of 24 kilometers, which is okay for the time being. Anyway, the destroyers of the little devils are like this, and that's not comparable. When the new gun with a range of 27.5 km returns, it is not too late to replace it.

Therefore, before the new sonar system has returned, Bai Shujie first has to improve the anti-aircraft firepower of the Feilong 301 and increase the ability to protect himself.

Dismantle the two 7.7mm Type 92 twin anti-aircraft machine guns, and then move the two DW30mm five-barreled phalanxes to them. Two phalanxes, each with 9 spare magazines (10,000 rounds). Although the size is larger than the original, and the weight has increased by two tons, Bai Shujie thinks it doesn't matter.

It's a big deal to reduce 4 tons of fuel, and I'm not ready to run very far anyway. 3,000 nautical miles, or 2,800 nautical miles, has no practical meaning for Bai Shujie at all.

The biggest change in this modification is the installation of two newly developed air defense radars on both sides of the bridge, with a detection range of 75 kilometers and an actual response distance of 48 kilometers. Guantong Chang finally confirmed the target, and the distance to enter the combat state was 32 kilometers.

Shortly after the Spring Festival in 1938, the modification work came to an end, and the final painted strings were completed. The Wyvern Flag, with the waves of the sea, has been raised to the mainmast.

"Commander Zhang, starting tomorrow, you will go to sea to verify the artillery system and radar system." Bai Shujie said to Zhang Bingyang at the handover ceremony: "Lao Tzu doesn't know if these things are good or not on your destroyer, so you need to come up with the results." Don't go too far, just 50 kilometers. ”

After all, what happens next, let's see how it will be broken down next time.