The door of the courtyard house has been welded dead

"Red Star Steel Rolling Plant: On Grid Armor, Second Phase Research and Experimental Log"

Time: October 65, 4.

Location: Security Department shooting training range.

Participants: Shooter, Li Xuewu from the Security Department; Supervisor, Feng Zhigang from the Cold Rolling Workshop; Lu Lei from the Technical Department; Photographer, Zou Ying.

Test equipment: Type 56 rocket x10 (signed by Li Xuewen) Improved grille armor x2 (signed by Feng Zhigang)
Purpose of the test: After the first batch of live-fire tests, the grille armor developed and produced by the steel rolling mill achieved the expected test goals and had good blocking effectiveness against portable rocket-propelled grenades.

The test entered the second phase, which is to reduce the weight of the grille to alleviate the future burden on the loading unit. Live ammunition shooting will be carried out on the lowered grille to test the armor performance of the improved grille.

Test conclusion: empty.

Reviewer: Li Feng (Instructions: Test approved, confidentiality level: secret)
"Wow~!"

Director Feng held the test log in his hands. With the breeze blowing, the paper pages gradually fluttered.

Compared to the first live-fire test when there was no preparation at all, the second phase will undoubtedly be much more standardized.

Not only is the test log gradually formalized, but everyone knows what they should and should not do.

"This is the improved version. I see, it's no different."

The second-stage grille armor that was sent to the target trench looked similar to the two previous sets that were hastily made.

"What do you know? The width of the grille gap has been reduced to 5 centimeters. The most important thing is to reduce the overall weight~!"

Chief Lu of the Technical Department glanced at Li Xuewu who was asking the question, and put forward relevant requirements compared to the first generation that was completely hastily drawn by Deputy Director Li.

The second-generation grille armor was produced by the cold rolling workshop after calculations by several core technicians.

A series of improvements have been made to the thickness and width of the grille blades to reduce the thickness and width.

Compared with the first generation, it can achieve the same coverage area, but the weight is reduced by 190 kg, and this is only on the one-way side.

The load capacity of the load-bearing unit (tank, armored vehicle) is limited. The overall weight of the armored grille must be controlled within 1.5-2 tons after being surrounded on all four sides so as not to affect the driving speed and maximum driving distance of the load-bearing unit.

Everything was considered from the perspective of actual combat. The first generation was produced rather hastily, and they crossed the river by feeling the stones. If they were not careful, the total weight would be exceeded. The design redundancy of the armored units was insufficient, so they could only find ways to reduce the weight from their own side.

190 kilograms is nearly 0.2 tons. With the corresponding armored sides, 0.4 tons can be saved. After each station is surrounded by armor on all sides, about 0.6-0.75 tons can be saved.

This is already a high figure. If the second phase of the test goes smoothly and the total weight of the grille armor is controlled within 1.8 tons, it will have practical combat significance.

on the other hand.

In the past, the production of steel rolling mills was all carried out in accordance with the indicators allocated by the superior department. Along with the indicators, there were also drawings of parts and components required by each unit, as well as specific parameter requirements for sheet and pipe materials.

In summary, in the past, steel mills would produce whatever parts and quantities were required by superiors.

Starting with grille armor, steel mills have been exploring changes in their production model, from requirements from above to figuring out what to do, how big to make, and how much to make.

From being led for walking, to starting to lift his head and try to walk on his own.

"This is not something a security officer like you can understand. Get ready for the test~!"

Li Xuewu didn't understand the principles in this regard, but Director Feng from the cold rolling workshop and Chief Lu from the technical department did.

When it comes to production, these people who are the leaders on the production line are all very sensitive, and the steel rolling mill has recently reached a critical juncture in its reform.

Facing several section chiefs and directors who were two years older than him, Li Xuewu shrugged his shoulders. He was just a shooter who came to fire rockets anyway.

Before coming, his brother had already told him that he should know what he should know, and pretend to know nothing about what he shouldn't know.

If you are involved in military secrets, you must avoid suspicion.

"One round loaded, request to fire~!"

"You are allowed to shoot, but it's better to shoot a little to the left to leave room for follow-up shooting~!"

Li Xuewu, who was lying on the ground, slowly narrowed his eyes at a distance of fifty meters, slowly moved the aiming line to the left, and pulled the trigger.

There was a click on my shoulder, and I could hardly feel the recoil. My cheek was pressed against the wooden barrel, and I could feel a burning heat inside the launch tube.

The rocket could not be seen clearly within the field of vision because of the flames at the tail and the smoke produced by the burning flames. Li Xuewu only saw the smoke accompanying the tail flames and drilling into the grille in the distance.

“Swoosh, boom~boom~~!”

Even though he was fifty meters away, Li Xuewu, who was lying on the ground, felt it. The ground seemed to tremble slightly.

The faces of the few people who had gone through many tests looked a little ugly. Compared with the first test when there was much thunder but little rain, the current big noise could only prove it.

The bullet hit the wall, and the kinetic energy released was transmitted to the concrete wall.

Li Xuewu, who was only responsible for launching rockets, reloaded the launch tube with an expressionless face, and became a rocket launcher machine, not caring about anything else.

"Second round loaded, request to fire~!" "Permission to fire~!"

"Phew~!"

"Bang, sizzle!"

Compared to the noise of the first shot, the metal collision sound of the second shot was undoubtedly extremely clear. Compared to the first shot where even the ground was shaking, this time, only the sound of the hot metal gushing out could be heard.

"Wait a minute~!"

Chief Lu, holding the telescope, observed for a while, and then gently waved his right hand to signal Li Xuewu, who had already put in the third bullet, not to shoot in a hurry.

"Lao Feng, Zou Ying, come with me. This shot didn't penetrate. Take a picture to record it~!"

"Yes~!"

In the column of test conclusion at the bottom of the test log, Director Feng heard Chief Lu's call, put a √ under the first X, and then walked to the target trench.

On the left side of the grille, there is a hole that has been drilled through, which looks a little hideous.

This was caused by the first rocket firing. The 1.8 cm wide grille blades had uneven ports at the top and bottom.

The broken blades could not withstand the impact kinetic energy of the rocket's secondary acceleration, and a fist-sized hole was squeezed out, through which the warhead penetrated.

A hole as big as a baby's fist had been drilled in the reinforced concrete wall at the back, and there were tiny cracks around the hole.

The second rule is that it happened to hit the "cross" where the grille blades were connected, and the heat flow gushing out of the bullet directly penetrated the connection.

The edges of the grille blades also produced a phenomenon that only appears after high-temperature melting.

As for the concrete wall at the rear, it was burned black and the surface was slightly concave by about one centimeter, but no penetrating damage was caused.

"Tape measure, measure the depth~!"

Director Lu half-squatted, took out a thin steel bar, poked it into the hole in the concrete wall, then pressed the thin steel bar with his thumb and pulled it out.

From the top of the thin steel bar to the position where his thumb was pinching was the penetration depth of the rocket. After measuring with a tape measure, the depth of the hole was recorded in the test log book.

Zou Ying, who was in charge of taking photos, is Li Feng's mother-in-law. She took her son-in-law's Seagull camera and captured the whole scene.

"Record, the first bullet penetrated to a depth of 7 centimeters. If it were a steel plate, it would be about centimeters. This proves that the kinetic energy of the bullet's impact was initially blocked by the grille, and after reaching the wall, it did not cause the maximum penetration injury."

The steel mill's makeshift weapons testing team has become more professional.

The two leading cadres who were originally in charge of production and technology now had serious expressions on their faces, looking like researchers in a research room.

Maybe this is also the reason why Li Feng did not get involved and did not interfere too much. This situation is very good and it is what he expected to see.

"Go to the right, the left side's defense support is not strong enough, and the result is not objective enough~!"

Returning to the shooting position, Li Xuewu had already finished smoking two cigarettes. After seeing that everyone had returned, he nodded and put the rocket launcher on his shoulder again.

……

"This is today's test log~!"

The morning was over, and at the end of the test, all the results of the warheads were recorded, whether good or bad, in the log.

All the participants below signed their names, and after the experiment, the log was sent to Li Feng's desk.

"Let me take a look, sit down~!"

Motioning to Chief Lu to sit down, Li Feng picked up the log book and read it carefully, while silently recording the data in his mind.

"How do you feel?"

After reading it, Li Feng put the diary into his drawer and looked at Section Chief Lu who was sitting opposite him.

Section Chief Lu shook his head, his face not looking very good. Although Li Feng did not make too many demands on the second improvement, the result was undoubtedly a little unacceptable to him.

"The weight of the grille has been reduced, but its strength has undoubtedly also been reduced. The width of the grille blades has shrunk a bit too much to 1.8 centimeters. The probability of being penetrated is 70%, which is much higher than when the width was 3 centimeters~!"

It is indeed a bit hard to accept. Although the first batch of grille armor was roughly made, the rocket penetration rate was only more than 20%. Now it has risen to 70%, which is undoubtedly a failure.

"How do you want to solve it?"

Li Feng had no intention of blaming him, nor did he criticize the technician's ideas. Instead, he looked at him calmly, and there was even a hint of encouragement in his eyes.

"If the thickness of the grille blades is increased, the overall weight may increase~!"

"First follow your idea, at least reach half and half~!" (End of this chapter)