After seeing the effect of this rocket, although it is far worse than the original one, it is mainly the difference between launching drugs and explosives. If gunpowder is upgraded to nitroscopic cotton and explosives, it is estimated that this pirated rocket will be similar to the original one.

Chongzhen was very happy and said:

"It's really good that this turbo rocket can be like this now. I originally thought that it would be good to make a mortar and a howitzer within a year. I don't dislike it if I can't make a mortar and a grenade launcher. I dare not think about it. Rockets are so dare not think of it! Well, I haven't thought about rockets, but when I think about it, it's the kind of Katyusha in the movie, which is super long and large, with more than 20 combined rocket launchers, one to hit a sea of ​​fire, and can smooth the target. Ha! I didn't expect you to make a turbo rocket, which is much smaller than Katyusha. When I tried to shoot just now, it was not much worse than Katyusha!"

Isn't this underestimating people? Wang Chengen was choked and had no temper, so he had to say:

"I am not sure, so I didn't report to the emperor in advance. Come on, Jie Xuan, report to the emperor how many times we failed to develop rocket launchers."

Wang Chengen pulled a middle-aged man over and introduced him to Chongzhen: "Your Majesty, this is Jie Xuan. If it weren't for him, this rocket might have to be released at least half a year."

"I pay homage to the Emperor, long live the Emperor!"

"I'm calm and tell me about the development process of the rocket."

"Your Majesty, Weichen is just trying to fight for Director Wang. However, this rocket has indeed gone through some twists and turns. The principle bomb was made in half a month, but it was made of paper, like a big firework. The nozzle of the principle bomb was originally made of copper-skinned nozzle. However, with this principle bomb, there is a sample and a large direction to develop the live bomb, and it is easy to deal with. Of course, the principle bomb was just trying to make the rocket in this direction. The principle bomb, the rotation speed, shooting accuracy, and explosion power, are all insignificant."

Wang Chengen said with a smile:

"Yes, that's a big firework, saying it's a rocket, it's a fool. Jie Xuan, you continue."

"I encountered the problem of nozzle processing at the beginning. At the beginning, I designed the nozzles for the whole casting, which were cast in copper, which was too high and could not withstand high temperatures. Later, considering the trouble of processing eccentric nozzles, I designed an assembly plan. The method of firing ceramics was used to burn six eccentric nozzles and then installed them on the six holes of the tail cover of the cast iron, which seemed to solve the nozzle problem. However, after a trial injection, due to the deformation of the ceramic firing and insufficient assembly, the shot rocket was very fast and had no accurate point. I had to screen the nozzles with high precision in the ceramics after firing. This resulted in the scrap rate of ceramic nozzles as high as 80%, and the assembly error could not be eliminated, so the effect was still not ideal. Until the steelmaking was successful, I used forged steel, first processed on the lathe, and specially made a drilling machine for drilling eccentric holes with indexing positioning, which completely solved this problem."

Chongzhen remembered the two bombs and one satellite in later generations. It seemed that the problem of nozzle temperature resistance was a big problem. I don’t know how the graphite nozzles of rockets were designed in later generations. The limitations of materials in this era were too great. The high temperature resistance in this era was just ceramic materials. Alas! I don’t know when a satellite could be placed.

Wang Chengen added:

"At first, I was worried about the ablation of the nozzle and was afraid that the steel could not withstand high temperatures. In fact, this was a disposable nozzle. The injection was only within three seconds, so I could just use steel. If you want to extend the range, you can just brush a layer of graphite. I also tried many eccentric angles of the nozzle, from 13 degrees to 18 degrees. After repeated testing, this was done by Wang Xichang. Of course, it is not a problem now. Jie Xuan, you still say."

Jie Xuan then continued:

"The problem I encountered later was that the cylinder material of the combustion chamber was used. If the wall thickness of cast iron was thin, it could not withstand pressure. The combustion chamber had to be able to withstand high temperatures and high pressures. The wall thickness was too heavy. After switching to forged steel rod materials, the strength met the requirements, but the processing volume was too large, the cost was high, and the efficiency was too low. Director Wang said that at least hundreds of rockets would be fired at one firepower coverage. How could this be done? Fortunately, Dingwang created a seamless pipe and specially made a manganese alloy seamless pipe for us. The processing volume was greatly reduced, and this problem was finally solved."

Jie Xuan did not call Eunuch Wang but spoke of Director Wang at once. It was just because Wang Chengen didn't like to listen to the title "Eunuch Wang", so he proclaimed himself as a technical director. People who don't understand thought that Eunuch Wang became a eunuch general manager of "Eunuch Wang", and he didn't feel awkward about the title "Eunuch Wang".

Wang Chengen smiled and said:

"Jie Xuan made a contribution this time, and Wang Xichan was also a hero. In addition to the above problems, there are also problems such as heat insulation and drug plates. They are not difficult, and they have all been solved one by one. However, it is difficult to adjust and ensure the uniformity of gunpowder, and it is also difficult to make the gunpowder into a hollow drug tube. They have spent a lot of effort, went through twists and turns, and rely on some luck to succeed. In fact, the requirements for gunpowder stabilization rockets are not so high. Now the problem of gunpowder drug tubes is solved. When the rocket is on the tail wing stabilized in the future, it will be much faster."

Chongzhen nodded frequently while listening, and before Wang Chengen finished speaking, he said:

"I will reward all the meritorious officials who develop rockets. Please report a list." After expressing their opinions, he then asked:

"It's only been about a month since I left the army to Taiwan. It's the end of September and by the end of October, how many rockets can you produce for me?"

Wang Chengen replied: "One thousand should not be a problem. There are still some minor problems with the bomb fuse, and sometimes it will be silenced. The problem is found and there are solutions to the problem, but it still needs to be tested before the bomb fuse is finally fixed. After the molding, this bomb fuse can be used on rockets and grenades. At that time, when fighting Taiwan, it is better to pull up the 75mm howitzer."

Chongzhen nodded:

"Yes, I'll pull up the howitzers. I'm going to personally fight this time to see how many Dutch bastards can withstand the bombardment of our cannons."

Wang Chengen was a little surprised and said:

"No way? Emperor, is it necessary to fight Taiwan? Is it necessary for the emperor to personally fight? Is it better to be named Wang Youqing, Zhang Huangyan or Zhao Yijun leading troops, and let Zheng Sen's navy cooperate with him!"

Chongzhen shook his head and said:

"There is also a naval battle this time. I will destroy the Dutch fleet together. I have to take the opportunity to learn about the naval battle, so I must fight in person!"

It seems that even Wang Chengen did not advocate his own efforts, and he had to obtain Wang Chengen's support first. So, in the Royal Club, Chongzhen and Wang Chengen had a good communication.

"Look, there are usually no typhoons in winter, so I personally go to the sea without any accidents. Also, naval battles are the highlight of the future. Now, Zheng Zhilong and Zheng Sen are the most proficient in this group. I don't know what naval battle is. Isn't that a great regret! Maybe after watching naval battles, I can come up with a new set of naval battle tactics and naval warfare weapons in later generations. Besides, I have to experience how amphibious landing develops in the future, not!"

"But, I've only been in Nanjing for half a year, and I'm worried about what if the political situation is unstable!"

"What are you worried about! This time I will bring Wu Sangui with me, leaving behind the king of Ding, and assisted by Shi Kefa and Wang Duo, and hand over the military power to you. There are already 28,000 new troops. I will take 6,000 people away, and there are 22,000 new troops. What other chaos can they make!"

Wang Chengen thought about it and said that King Ding is now a science and technology worker and cannot become a conservative school of Zhihu. According to the current direction, even if Chongzhen has any accidents, it is no big deal. Wang Chengen immediately thought about it and understood Chongzhen's intention. He slapped his forehead and said:

"Does the emperor want to create the new navy himself? If I guess correctly, the emperor must be thinking about the treasure land of America. Well, Australia and New Zealand are also good."

Chongzhen laughed and said:

"Ha, the king who knows me is the kindness of the king! Since we finally arrived in the Ming Dynasty and caught the whole world with unparalleled land, and if we don't take advantage of it, that's a bastard! Also, let me tell you, I became such a bullshit emperor, trapped in the palace every day, and at most I can go around Nanjing. It's so unhappy! It's not like you, freedom! It makes me envious! The poem says: 'Life is precious, love is more expensive. If it's for freedom, both can be abandoned!' Brother, the so-called 'If you don't have freedom, you'd rather die!', like me, who had to do some adventures in my previous life, and now I'm just hanging out like this and can't go anywhere. Isn't it a bit miserable?"

"Understand, understand! The palace is the forbidden palace. It seems that the Ming Dynasty does not have a private visit. It is indeed a bit too much to ask the emperor to not leave Nanjing. Well, you convince me, and I will do my job with them, so that the emperor can be majestic at sea. However, the boat must be modified, at least it must be equipped with iron armor." Wang Chengen thought to himself that Gong Daming is definitely not a otakus, and it is indeed a bit inhumane to let him stay in the palace as the emperor. Just letting him take a walk in Nanjing obviously cannot satisfy this man's addiction.

"Okay, okay, you can do this."

Chongzhen's plan to personally expedition caused an uproar among the ministers. Even though Wang Chengen did some work, several stubborn ministers insisted on admonishing him, such as Jiang Yueguang and Zhang Shenyan, who were two stubborn elements who strongly opposed the emperor's personal expedition. There was no way, and Wang Chengen had to be ordered to privately run to the two's mansions as lobbyists, and he was almost bribed. These two guys did not make any effort, but their hard work paid off. The two old men could not resist Wang Chengen's repeated soft efforts to come to the door. Of course, they still strongly opposed the opposition, but they were not as hard as they did at the beginning. Chongzhen's plan to personally expedite, so he finally passed it.

But the ministers were worried about Chongzhen's safety, and the first thing was that they were worried about typhoons. When Zheng Sen explained that there were never typhoons in winter, in order to be on the safe side, the ministers unanimously suggested postponing for at least half a month, so the time for personal expedition was pushed to mid-November of the lunar calendar.

In order to resist the Dutch artillery fire, the emperor needed to improve his defense level when riding on the ship, and it seemed too late to install iron armor. After some argumentation, it was finally decided to install iron mesh cement armor on the three-masted gunship. This barbed wire mesh cement armor was inspired by later barbed wire mesh cement ships. Wang Chengen first covered two layers of barbed wire mesh above the waterline of the three-masted gunship, and then pasted 10 cm of concrete on the wire mesh. The deck and the cabin on the ship were also made in the same way. In this way, at least they were not afraid of fire attack. As for the defense of solid bullets, the barbed wire mesh concrete layer was like the additional armor of later tanks, which could at least remove most of the impact kinetic energy of the bomb. On the top of the muzzle and some key parts, real steel armor was installed.

The modification of the three-masted gunship was carried out at the Fujian Shipyard, while the smaller gunship was modified in Nanjing and Zhenjiang. The emperor personally fought for the new army, which was 7,000 troops after the strengthening of the new army, the Military Affairs Office formulated a plan to dispatch 80 gunships, plus 70 troop transport ships, and prepare to run to Taiwan in a mighty manner.

Chongzhen ridiculed himself, the Dutch had less than 2,000 soldiers and more than a dozen gunships. This time, he was really using a slaughter to kill a chicken!
Chapter completed!