My Post-Apocalyptic Shelter Levels Up Infinitely! Chapter 163: Make guns and open the gun technology tree!
"Global Wasteland: Infinite Shelter Upgrade ()"
Six hours of trading time, as soon as three o'clock in the afternoon, as Su Mo stepped out of the light gate, the golden light behind him shattered twenty or thirty seconds later.
The light gradually turned into spots of light, fell to the ground, and merged into the snowdrift.
Except for the refuge and the mountain-like supplies at this time, the depression has once again returned to its former calm.
3200 units of iron blocks, divided into two layers, have been densely packed around the underground shelter, covering an area of about three to four mu of land.
The same is true for the copper blocks. On the left side of the underground shelter, they are neatly piled up and lying on the ground.
With the current storage area of the underground shelter, it is impossible to store these materials even if it is doubled several times, so they can only be temporarily piled outside.
"It's great, in the depression, others can't detect me. I have so many neighbors here, and I'm not afraid of being stolen if I store them outside."
Walking on the iron block, with the vigilance of Oreo, Sumo is not afraid at all of those who want to steal resources near the shelter.
Even if there is, these people can't take much away at one time just relying on the small and pitiful storage space of these people, so don't worry at all.
Using the storage space, after moving all the surrounding steel materials into the garage, and picking up five units of copper blocks, Su Mo nervously went to the second floor to turn on the generator.
During the days of adventurous travel, even almost costing his life, he exchanged for the supplies.
Finally, on the last day, it evolved into strength!
Looking at the small thermal weapon laser manufacturing machine that has started to self-check, Su Mo's mood was agitated.
The steps to use the laser machine tool are not difficult. After adding the magical modular technology, the manufacturing has been simplified a lot.
You only need to select the weapon to be made first, put in the required materials according to the requirements, and pass the machine tool inspection, then you can perform a fool-like placement operation, and wait quietly for the finished product to come out of the oven.
"Modular technology is indeed a good thing, but it's a pity that I didn't buy a single modular machine tool this time"
"But even if there are, these people may not necessarily sell them unless they are dying"
Shaking his head, putting away some greedy thoughts, seeing that the green light was on after the self-inspection was over, Su Mo lightly clicked on the M-1 rifle, and the material requirements popped up.
Three units of steel, two units of iron, one unit of copper, one unit of wood, two units of water, and...
Ten degrees of electricity!
The machine tool also has its own battery module, which needs to be fully charged to ensure that it is higher than the manufacturing value before starting.
This is a requirement that may cause manufacturing failure or machine tool damage due to sudden power failure.
Seeing that the fast charging has started on the lower right, Su Mo is not in a hurry, and sits patiently in front of the machine tool and waits.
The construction of firearms involves some specifications that seem simple but are actually very complicated. For example, the construction of rifling is a very simple and very important part.
Rifling, also known as rifling. Because its cross-sectional shape resembles a windmill, it is also called a windmill line.
The rifling can be said to be the soul of the barrel. The function of the rifling is to give the bullet the ability to rotate, so that the bullet can still maintain the predetermined direction after it is discharged from the chamber.
Although the use of rifling was recorded in the 15th century, it was not popularized until the 19th century due to the difficulty of the manufacturing process.
Without relevant knowledge reserves, Su Mo can only hope that the machine tool will be powerful, and there will be no mistakes!
Half an hour later, after charging, Su Mo looked at the production button that popped up on the side of the machine tool. He gently put all the materials into the storage module of the machine tool, which currently only has one square meter, and pressed the production button with both hands. button to start making firearms for the first time!
Crack! creak!
The piercing sound was accompanied by a little trembling, and as the button was pressed, it began to burst out from the machine tool from the inside out.
A creepy high-pitched cutting sound not only startled Somo, but even the big and small sparks on the second floor cooed in fright.
The laser probe above begins to rotate slowly under the force of the machine tool.
Before Su Mo took a good look at how the machine tool made weapons, an iron cover suddenly rose from both sides of the machine tool.
Driven by the motor, the cover began to slowly form a ball, leaving only a few cooling holes, completely covering the entire machine tool.
Then, a burst of dazzling light suddenly burst out from the heat dissipation holes of the cover, and the illuminated research room was abnormally bright.
The high temperature brought by laser cutting began to float out through the cooling holes.
Gradually, seeing the temperature getting higher and higher, Su Mo simply summoned the lion's wind to cool the big iron ball.
When this cycle was repeated for five minutes, the light began to weaken.
Poof!
With bursts of water vapor erupting, the cover also began to fall slowly, revealing the true face inside.
At this time, in the place where the finished product pops up, there is already a freshly baked gun with a distinctive shape and a very aggressive look.
From the tip of the gun to the tail of the gun, he looked at the gun body carefully. At the moment of harvesting, Su Mo calmed down instead.
When the green indicator light came on again, indicating that Su Mo could take the gun, the temperature of the M-1 rifle also dropped and reached a stable temperature.
Picking up the gun, Su Mo first felt the weight.
"Heavy but not heavy, the empty gun weighs about five catties, and with bullets, it should be between six catties and six and a half catties"
Unloading the magazine, Su Mo checked the capacity.
The magazine is equipped with a 5.56x45 mm caliber bullet, using a STANAG magazine similar to the one on Earth, with a standard capacity of 40 rounds.
"If you don't consider the name and the pattern design that is different from the above, it is really a pirated m4a1"
Touching the intricate patterns on the gun body, Su Mo was not sure about its power, so he could only try to continue to open the machine tool to make ammunition.
The M-1 rifle uses the M193 rifle bullet, which is the conventional 45mm caliber. This small-caliber rifle bullet has a huge lethality that is not commensurate with its size.
The M193 bullet has no steel core, and the bullet is filled with soft lead, and the copper skin wrapped outside the bullet is very thin, so the entire bullet becomes very soft.
After hitting the target, the warhead will deform and shatter quickly, and the fragments of the bullet will form multi-hole penetrating wounds (that is, several holes are punched by one warhead), causing severe bleeding.
However, the technology tree of guns is not as simple as making guns.
The biggest problem facing all wasteland humans is the preparation of ammunition.
Even if the current underground shelters are rich in materials, if you want to make suitable bullets, you need to continue to point out a new technology tree...
Smokeless Gunpowder!
Black powder burns slowly and has low pressure, resulting in low bullet velocity.
In order to achieve sufficient range and effect, simple physics dictates that the mass of the bullet needs to be large, and the caliber of the bullet will naturally be larger.
Therefore, rifle bullets of more than ten millimeters or even 20 millimeters abound in the era of black powder.
In order to achieve better results, in the late black powder era, compressed black powder was loaded to increase the chamber pressure, which can also provide a speed close to that of smokeless powder.
When it comes to smokeless gunpowder, the burning speed is faster, the pressure and temperature are higher, which brings faster speed, reduces the caliber and quality of ammunition, and reduces the logistical burden, but it also brings countless design changes.
Smokeless gunpowder brings smaller ammunition caliber, faster speed and straighter trajectory.
Flatter trajectory means less impact from range errors.
For example, in the trench warfare of World War I, it is common to hit the exposed head at about 300m, and it is likely that the difference from the zero point by tens of meters will result in a high or low impact.
The flatter trajectory can reduce the height error of the trajectory caused by the distance, and it will be easier to hit the target.
"Although the preparation method of smokeless gunpowder in the TV series Hanyang is a bit exaggerated, there are also places for reference..."
Placing the M1 rifle on the work table, Su Mo began to think carefully about how to mass-produce smokeless gunpowder.
If you don't promote the development of the ammunition technology tree, no matter how awesome the guns are in the future, it will be useless without bullets.
"The production process of nitrocellulose and gun cotton is not troublesome, but the appropriate cotton is a problem. Later, you only need to soak the gun cotton with ethanol and ether, and dry it to get smokeless gunpowder"
"It is not difficult to prepare ethanol and ether. Ethylene can be extracted from petroleum, and ethylene can be used as a raw material for the production of ethanol. Ethanol can be obtained through hydrolysis of ethylene, and ether can be obtained through the catalytic reaction of ethanol."
Finding out a piece of paper, Su Mo tried his best to recall the few chemical knowledge and piece together TV dramas, and completed the plausible idea of making smokeless gunpowder.
With a flash of light, after a systematic appraisal, it was confirmed that there was nothing wrong with this design drawing, and the idea was correct.
"So, the last difficulty is the cotton? If you want to make suitable gun cotton ~IndoMTL.com~ The quality of cotton is very important!"
In the TV series made in Hanyang, Xu Jianyin once presided over the development of sulfuric acid at the Tianjin Manufacturing Bureau, which solved the problem of relying on imports of sulfuric acid at that time.
It was precisely because of his outstanding talent that Zhang Zhidong recruited him to Hanyang Steel Pharmaceutical Factory to be responsible for the production of ammunition.
One of the main raw materials for making gunpowder is cotton. During his research, Xu Jianyin found that there is a big difference between domestic cotton and foreign cotton.
Therefore, during domestic trial production, temperature, humidity, time, pressure, liquid concentration, etc. should also be changed accordingly. Perhaps this is the main reason for the failure of Jiangnan Manufacturing Bureau.
In order to quickly find a production method suitable for China, Xu Jianyin "hands-on the pestle and mortar, and practiced it himself".
In only half a year, a sample of smokeless gunpowder was finally trial-produced.
After testing, the effect of the sample is completely comparable to that of imported smokeless gunpowder.
This also shows from the side that as long as suitable cotton is found, suitable smokeless gunpowder can be refined in a very short period of time.
"System, how many survival points are needed to create a pound of cotton for making gun cotton!"
In no rush to buy from the market, open the system panel, click on the creation interface, Su Mo first recorded the system requirements.
The price is not low, but it is not high either.
65 survival points can be exchanged for a catty of cotton used to make gun cotton, 300 points can be exchanged for a catty of produced gun cotton, and 520 points can be exchanged for a catty of developed smokeless gunpowder.
A bullet needs to be filled with about 2g of bullets, and a catty can be filled with 260 bullets. After conversion, it can be directly exchanged for gunpowder. The cost of a bullet is close to 2 survival points, which is too bad!
"No, I want to install bullets in the future. I must have a suitable production line. I will buy cotton directly. I will practice myself!"