Bright Sword: Starting from the Improved Grenade

Chapter 125 Solid Fuel Rocket Engine

"Come on, put this 45mm small flat-fire cannon onto the armored vehicle!"

"Also, remove the armor at the back of the vehicle, and then install the Taihang 60 mortar."

At the engine factory, Zhao Tianyang held three drawings and directed the workers to modify the two armored vehicles in front of them.

"Section Chief, this drawing won't be changed?"

Li Yuncai looked at the third drawing posted on the blackboard and asked curiously.

This guy has so many gun barrels, he looks very powerful!

"This!"

Zhao Tianyang glanced at the third blueprint: "Wait a moment, the key weapons have not been made yet!"

"Section Chief, how many mortars should be installed?"

At this time, a worker came over with a wrench and asked.

"One!"

Zhao Tianyang said after thinking for a moment.

Although there is still a lot of space on the armored vehicle, it is more than enough to install three or four 60 mortars.

But if this is done, the space inside the armored vehicle will be very small, and it will not be able to carry many shells, nor enough mortar operators.

"Why are you still standing here? Go and get the third blueprint ready. I'm going to need it later!"

Just when Zhao Tianyang wanted to go and help modify the armored vehicle, he saw Li Yuncai still standing there staring at the third drawing in a daze, and couldn't help but urge him.

"Oh, oh, okay, I'll go right away!"

Li Yun came back to his senses and nodded. He really thought that the modified armored vehicle in the third drawing was the most powerful. There were so many gun barrels that he was scared just looking at them.

The next day, Zhao Tianyang did not go to the engine factory, but came to a tent.

"Chief, you're here. Come and have a look. I have prepared everything you want!"

Li Yuncai put a bag of sweet potatoes on the ground, wiped the sweat from his head and asked.

"By the way, what do you want this sweet potato for?"

"what!"

Zhao Tianyang smiled slightly: "Of course, it is to create a weapon of mass destruction!"

"What?"

Li Yuncai was full of questions. He had no idea how to combine sweet potatoes with weapons of mass destruction. How could this thing kill the enemy?

Are you trying to starve the enemy to death?

"Just watch!"

Without explanation, Zhao Tianyang took out the sweet potatoes from the bag, washed them, cut them into powder, and finally soaked them in clean water to get starch milk.

"Chief, are you going to make sweet potato noodles?"

Looking at the white liquid in the basin, Li Yun felt more and more confused.

"Stop talking nonsense, go wash the sweet potatoes and soak them to extract the starch, just as I did just now!"

Zhao Tianyang took out some salt from the side and urged Li Yuncai while making hydrochloric acid.

"Fine!"

Li Yuncai touched his head, walked forward and started washing the sweet potatoes.

After two hours of busy work, Zhao Tianyang put the sweet potato starch he had just made into hydrochloric acid.

Then acid hydrolysis is used to break the starch molecules into glucose.

Then alkali is used to neutralize the excess acid, and finally activated carbon is used for decolorization and filtering to remove excess impurities.

"Okay, concentrate this glucose at high temperature, boil out the glucose crystals, and melt it!"

Zhao Tianyang handed the filtered glucose to Li Yuncai and gave instructions.

"glucose?"

Li Yuncai took the ceramic basin with confusion and walked towards the big pot set up outside the tent.

After Zhao Tianyang handed the ceramic basin to Li Yuncai, he took out a small scale.

He scooped out some potassium nitrate from a box nearby and weighed it. After confirming that there was 6.5 grams, he ground the potassium nitrate into powder and put it in a bowl for later use.

"Done yet?"

After doing all this, Zhao Tianyang ran to Li Yuncai, took a look, and found that the big pot was just beginning to steam.

He had no choice but to go back to the tent and take out a recipe to read it.

I believe that friends who have read this should have understood what Zhao Tianyang is going to do!

That’s right, what he is going to do now is the rocket propellant that is common in later generations.

There are four general types of rocket propellants.

Ammonium perchlorate composite propellant: ammonium perchlorate, aluminum powder, etc. are mixed and used.

Dinitramine propellant: A mixture of RDX and Octogen.

Three double-base propellants: a mixture of nitrocellulose and nitroglycerin.

4. Improved double-base propellant: Other ingredients are added to the double-base propellant to improve its performance.

There is also the current mainstream ratio, which is a mixture of black powder, ammonium nitrate, sulfur, etc.

Of course, the above recipes are either too dangerous or too expensive.

Even if Zhao Tianyang made it, the Eighth Route Army could not afford it, so he chose a simpler and cheaper formula.

That is 65% potassium nitrate plus 35% anhydrous glucose.

The recipe is cheap enough and only requires potassium nitrate and glucose.

Moreover, for Zhao Tianyang, glucose can be produced from a wide range of sources, including corn, potatoes, and sweet potatoes.

"Chief, I'm almost done!"

Hearing Li Yuncai's reminder, Zhao Tianyang put down the recipe, put the 6.5 grams of potassium nitrate he had just scooped out into a small heating device and started heating it.

After a while, after hearing a sizzling sound from the heating device, Zhao Tianyang stopped heating, took out a small spoon, and took out a small amount of hot potassium nitrate from the heating device.

"Done yet?"

Zhao Tianyang shouted outside the tent.

"I'm coming!"

Li Yuncai walked in holding a small bowl.

Zhao Tianyang took the small bowl and added the hot potassium nitrate in the spoon to the melted glucose.

After waiting a while and finding no reaction, add all the hot potassium nitrate from the heating equipment into the small bowl and stir to mix thoroughly.

Then, Zhao Tianyang poured the fuel into a small iron tube that had been prepared long ago while the fuel had not solidified.

"Okay, wait until it solidifies and then we'll know if it's successful or not by testing it!"

Zhao Tianyang put down the bowl, inserted a fuse into the iron tube, patted it and said.

Seeing that Zhao Tianyang had finished the work, Li Yun finally couldn't help wondering, "Chief, what on earth is this thing?"

"Rocket engine, used to launch rocket launchers!"

Zhao Tianyang explained with a little excitement in his tone: "This thing can deliver a large amount of explosives to the top of the devil's head in an instant."

"Oh my god! Is it really that amazing?"

In Li Yuncai's impression, the Japanese Type 91 105mm howitzer is the most powerful artillery. Could this thing be more powerful than it?

"Haha, just wait and see! This thing will become the most popular weapon of the Eighth Route Army!"

Li Yuncai still had a somewhat puzzled look in his eyes.

Zhao Tianyang checked and found that the fuel in the small iron tube had almost solidified, so he took the small iron tube out of the tent.

He found a stone, placed the small iron pipe against it, and then lit the fuse.

“Squeak…”

Soon the fuse burned out, and the solid fuel in the iron tube was ignited. A dazzling flame emerged from the tail of the small iron tube.

With a sound of "click", the small iron pipe flew into the sky under the thrust!

"Hey, it's flying!"

Li Yun had just finished being surprised and hadn't come to his senses yet when the small iron pipe fell down again quickly.

"How come it's only flying so high?"

Li Yuncai said disappointedly. Now he understood why Zhao Tianyang said that this rocket engine could send explosives to the top of the Japanese heads.

This guy can fly. If he carries some explosives with him, the Japanese will be blown to pieces and cry for their parents!

"It's enough. After all, the amount of gunpowder is only that small."

Zhao Tianyang walked over, picked up the fallen small iron pipe, took a look at it, and after confirming that there was no problem, he gave instructions.

"Secretary Li, hurry up and wash the sweet potatoes for me. I want to build a bigger and more complete rocket engine!"

"okay!"

Li Yuncai nodded excitedly.