Shang Wen returned to his residence and first made a recital. Ordered Meng Tian's men to be sent to the King of Qin. Shang Wen began to study rockets.

Shang Wen felt that there was a certain difficulty in studying rockets. The first is that the material is more difficult to solve. Although it has been considered that wood becomes the material of choice. However, the nozzle and nozzle cannot be made of wood. In the case of the use of gunpowder as a propellant. The high temperature can easily disintegrate the body of the rocket, causing it to deviate when it finally flies towards the target. This is something I don't want to see.

It seems that iron will have to be used. Only the malleability of iron meets the current needs. But iron must be made thin and light. This is the only requirement.

Come to think of it. Shang Wen began to sketch the nozzle and nozzle. In order to save the difficulty of processing. Shang Wen directly combines the two. At the same time, the size was planned.

Larger rockets are used with a diameter of one foot, and smaller ones are one-third of a foot in diameter. The nozzle is designed in the shape of a funnel. The mouth at the bottom of the funnel shape is designed to be one foot and one-third of the feet. The analogy of one-third of a foot. That's it. The size is indicated. Then write the precautions. Summoning a servant to go to the blacksmith to build it. When leaving, I was warned again and again. Be thin and light.

The spout is designed. Next is the projectile body. Considering the overall situation of the projectile body, Shangwen also designed a lot of specifications, which are basically designed into two categories. Big rockets, and small rockets. The large ones are capable of setting up launchers for launch. The small ones can be carried on their shoulders.

Large rockets are designed to be longer. But how big it is depends on the balance of the overall assembly. There is also a ballistics after launch. Then there's the trajectory of the movement. These are raw data and must be measured. Think about testing. Shang Wen felt that his head was not good, and he didn't have any measuring instruments. Even time, and only an hourglass. This thing is a.

In order to get first-hand data. Shangwen only needs to design more bullet bodies. Three-foot, four-foot, and five-foot. and a one-foot one. In order to facilitate future production, Shangwen adopts the technology of throwing away all the years and a half, and finally using the card lock to synthesize. This technique is not too difficult in the hands of Chinese carpenters. In the middle, Shangwen deliberately left some blind spots, which were the locations of the encapsulated propellant and warhead. Due to the lack of all. Shangwen had to figure it out on his own.

Similarly, after the design drawings are completed, they are handed over to the next person to handle. Meng Tian came in to deliver breakfast, and it seemed that he had been busy all night. It's tiring enough, but the problem hasn't been solved yet. Shang Wen ate a piece of dry cake in one hand and looked at the drawings in the other. Isn't it a change. Meng Tian went into the house to take a look, and left without saying anything. Because I'm used to it. Shangwen is so busy every day.

Warhead. To detonate the warhead, you have to take into account the weight of the warhead, and at this time, everything must be put together. There is also the way to detonate. How? Shang Wen sat on the bed, one hand constantly tapping the table for inspiration.

Suddenly, the hand slammed the table and smashed the cannon. This kind of thing Shang Wen studied in elementary school, but he needed materials. Shang Wen immediately made a list. The most important of these is silver salt. This stuff can be extracted from table salt. Extracted from saline-alkali soil. After commanding the subordinates. Shangwen began to think about another way to detonate it. Shang Wen felt that it was unreliable to rely on falling cannons, so another very simple way to detonate was to draw a fuse from the propellant. This length is more difficult to master. It's short, it's not even the distance, it's exploded, it's long, and it doesn't make a sound when it lands. This can be tried multiple times.

Another is to use the invention of the grenade device yourself. This is mainly due to the need to improve the tightness. Shangwen found that the first few batches of grenades had a dud problem due to a sealing problem. This is no joke. If you already have paper, as long as you add wax or grease, you can develop wax paper, and the problem can basically be solved. The next step is to prepare the materials.

Shang Wen listed a large number of things onto a piece of paper and began to grab the medicine according to the order. The people who bought the materials to build the parts of the projectile are back. Shang Wen realized that he had been busy all morning.

After eating at noon, Shangwen began to assemble the projectile body. Process the oiled paper, because candles are still a scarce commodity. You can only use oiled paper.

Take a nap, and by the time you wake up, it's already night. The men dug up a stone of sand from the saline-alkali land. Shang Wen solves the problem of silver salt. Boil. Filtration. at a boil. Filtration, crystallization. Salt can be extracted, but Shang Wen unexpectedly found that there is a small amount of sodium carbonate. Then bring to a boil. Filtered, crystallized, and still nothing. Shangwen began to think about other ways to detonate it.

Abandon the extraction of silver salts and begin assembling the projectile body. Fill with gunpowder. With oiled paper. Shang Wen easily separated the warhead from the projectile. And. To prevent moisture. Deliberately wrapped in oiled paper. Simply connect the fuse. A rocket is basically formed. This is where there is a fuse between the propulsion and the warhead. The percussive will be redesigned.

To design a grenade's firing line, Shangwen was borrowed from a lighter. Later, in the design, it was gradually perfected, and only then did the grenade appear. At first, it was just a prototype. Taking into account the impact effect of rockets. Shangwen decided to give it a try. This time, Shang Wen could not detonate after the rocket hit the ground in order to avoid it. The detonation method of double insurance is adopted. That is, a double iron ring is installed on the flint rod. Then, the two action rods are used to detonate the warhead in parallel. Shangwen is designed separately and separately. It became the prototype of modern fuses.

By the time it was all done, it was already night. Shang Wen breathed a sigh of relief, only to realize that he was really tired. Such a terrible job. It's really not desirable. I just don't know, the Great Qin State will give subsidies or not.

Take a look at the rest of the assembly work. Shang Wen simply cleaned up. Instructed Meng Tian's subordinates to keep a strict watch. I went to the bedroom and fell asleep. It's so tiring.

In my sleep, my head is still combing through the results of the day. And those unexpected discoveries. What happens when it has already been tested. Data that should be recorded. These flashes keep coming.

Shang Wen felt that someone was pushing him. Woke up in a daze. Meng Tian when he found it. Meng Tian looked frightened. Wait until you come to your senses. Only then did I hear clearly: "Sir, you have finally woken up." We thought you had fallen for the magic barrier. Something was muttered all the time. It's scaring us to death. ”

Shang Wencai felt that he was indeed very tired. Wave your hand to signal that it's okay. Let's disperse. Just get up. Continue to reload the projectile. Leave these things to the next person. Shang Wen was not at ease. After all, this is a test subject. Not a finished product. Meng Tian looked at Shang Wen and stopped talking. Didn't say anything either.

Two days later, the rocket began testing. The princess got the news and came. Shang Wen felt his scalp tingle.