my scientific age

This 60mm mortar is based on the most classic Bronde 600 as the prototype. The design uses a short tube, 670mm barrel length, and the breech adopts a cast ball-shaft firing pin structure, with a total length of 60mm and a caliber of 0.3mm. , ±[-]mm tolerance to ensure a better interference fit, to ensure launch performance and accuracy.

The total combat weight is 19 kilograms, and the effective range is 1.5 kilometers. The 360° circumferential firing range is achieved through the breech ball shaft structure, and the high and low firing range is 45 degrees to 70 degrees.

In terms of performance data alone, the performance parameters of this mortar are basically the same as that of the Sanyi 60mm mortar of the Republic of China, which has not yet been born. range of firepower.

In the middle of the night, in the mortar workshop of the arsenal, Zhao Zhangcheng and more than a dozen technicians formed a manual assembly line, working overtime and busy.

Fourteen qualified gun barrels processed by inner hole tapping were accurately cut into two, the ribbed one was used as the breech, and the unthreaded one was used as the muzzle.

After the gun barrel is processed, the pre-processed cone ball shaft firing pin structure is filled with sealing material to realize the closure between the thread and the gun tail thread to achieve the sealing effect.

Immediately afterwards, the watertightness test of the entire gun barrel is carried out to check whether there is any air leakage at the gun tail, confirm that there is no air leakage, and then send it to the painting station for manual painting.

The paint is dark green, and it didn't take long for a brand new gun barrel with a smell of paint to be released. After it solidified a little, it was transferred to the next station where the gun barrel mechanical sights were installed.

The original production process did not have mechanical sights. However, under the improvement of Zhuang Qianding, mortar mechanical sights were specially added to improve the accuracy and aiming efficiency.

With sights and without sights, there is a big difference. After all, not everyone in the Red Army is Zhao Zhangcheng.

With the installation of the mechanical sights, the first mortar in the history of the base area was assembled. This is a true self-manufacturing, which is called 100% intellectual property rights in the words of later generations.

As the first truly self-produced 60mm mortar in the base area, its importance and significance are self-evident.

During the Guantian Arsenal period, it was the peak period of military development in the history of the Red Army. From 1931 to 1934, a total of more than 4 rifles, 40 rounds of bullets, 2000 machine guns, more than 100 mortars and two mountain guns were repaired. Provided the Red Army with extremely precious weapons and ammunition.

However, even so, Guantian Arsenal does not have the production capacity of 60mm mortars.

Today, the military production level of the entire Liushugou Arsenal has far surpassed the former Guantian Arsenal and reached a new height.

After assembling the first mortar, Zhao Zhangcheng, who was so excited, did not stop there, but signaled everyone to continue their work and assemble the remaining barrels into mortars.

Benefiting from Professor Zhuang Qianding's previous arrangement, there are hundreds of sets, whether casting ball-shaft firing pin tails, mechanical sights, or gun mounts and bases.

The manual assembly line is very efficient, and a mortar can be assembled about every 10 minutes.

At 28:[-] am the next day, the manual assembly line led by Zhao Zhangcheng completely completed the assembly of [-] six-zero mortars. Then, the news was reported to the headquarters to apply for the mortar to be tested before leaving the factory.

One sentence summary, test shot.

"What, Cripple Chen, you fucking repeat it, you really built 28 mortars?!" The news was reported layer by layer, and when the boss heard the news from Chen Kang on the phone, he immediately looked surprised. Seeing the ghost's expression, there was an unbelievable look in his eyes.

A full 28 mortars!
The boss seriously doubted whether he heard it wrong.

What is the concept of 28 mortars?
It's very simple. The total number of artillery pieces in the entire army can't reach 28. How much do you own? Cannons, four mortars of the Second Red Army, and two mortars of the Fifth Red Army.

then……

It's gone.

There are more than 8 troops and a total of [-] artillery pieces.

Now the arsenal has produced 28 overnight.

"Yes, boss, Comrade Zhao Zhangcheng led the project team members to carry out manual assembly. From last night to now, 28 six-point mortars have been assembled, and they have applied for a test before leaving the factory. At present, there is not enough space in Liushugou to meet the test firing of mortars. "Chen Kang didn't get impatient, he repeated the content of the application again, and he had no choice. When he knew the good news from the arsenal, he was also in a state of disbelief.

"..."

There was a silence on the phone.

After receiving the second affirmation from Chen Kang, the boss was silent, not knowing what to say, and took a deep breath: "I see, the test site is at the headquarters of the spy regiment, Chen Lame, I will come over for this test shot in person, If something goes wrong, I'm the only one who asks you!"

"Don't worry, boss, I have confidence in the [-]-force produced by the Military Industry Bureau, and even more confident in the high-tech team represented by Professor Zhuang." On the phone, Chen Kang heard the words and knew the seriousness of the situation, and immediately responded loudly.

"Okay, that's it."

The boss spoke directly and immediately hung up the phone.

After the boss approved the gun test and stipulated the test site, the news that the Military Industry Bureau produced 28 mortars for the test spread like wildfire, and soon alarmed the heads of the headquarters.

Test guns, 28, produced by the Military Industry Bureau, no matter which keyword it is, it is enough to attract people's attention.

Regarding the 28mm mortar project of the Military Industry Bureau, the heads of the headquarters basically knew something about it, but they never expected that the military industry bureau's research and development speed was so fast, and [-] mortars were produced at one time.

According to the scheduled time given by Chen Kang, it will take at least half a year from the project to imitate the research and development to the first prototype gun, but now it is directly to the test of the gun!
At eleven o'clock in the morning, the sky was clear and cloudless, and the weather was very good.

At the headquarters of the secret service team, a soldier was constantly busy, and as required, the station was temporarily changed to a mortar test firing site.

In the far north direction, at a distance of 1 km and 1.5 km, a target with a diameter of about 15 meters was set up, and a number of scarecrows with straw paper on the surface were arranged in the target for the lethal effect test.

After more than two hours of preparation, the reconstruction of the mortar test site was completed, and all the work was ready. 28 60mm mortars and shells were transported here, waiting for the test launch.

At the center of the test firing point, the boss, commanders of various units, General Liu, Chen Kang, Hu Zhigang of the Ordnance Engineering Department, and all members of the [-]mm mortar project team were all present to participate in this test.

Professor Zhuang and Lin Wan did not participate in this test. Lin Wan went to the cement factory in the morning, while Professor Zhuang led the first batch of lathe workers in the machinery factory to start processing the key components of the compressor unit.

The main gunner of this test is Zhao Zhangcheng, the gun god who has the honor of 'skilled gunner'.

Today is an important day for Zhao Zhangcheng and a historic moment for every soldier present.

Test-fire the 60mm mortar made by the base itself!
If the test firing is successful, then, after today, the major units will be able to use their own mortars.

"Report, the mortar test is ready, please instruct!" After the two targets were cleared, Zhao Zhangcheng, wearing a gray-blue uniform, took a deep breath, straightened his back, came to Chen Kang, and reported loudly road.

"Start the test." Chen Kang raised his hand in return and said in a straight voice.

"Yes!"

After being approved, Zhao Zhangcheng went straight to the test site with a serious face.

At this moment, the audience is watching.

The eyes of the boss and the commanders of the various units were all focused on Zhao Zhangcheng, as did Chen Kang and the comrades in the Ordnance Engineering Department. Their eyes were expectant, nervous, confident, or worried.

The atmosphere at the test site was almost frozen.

"The first artillery group has it all, use the artillery at the No. [-] target!" Zhao Zhangcheng's expression was calm and fearless, as he was the artillery commander, giving orders to the four artillerymen standing around him in an orderly manner.

Immediately afterwards, the four artillerymen performed their respective duties and quickly got busy.

Since the first mortar fired for the first time was in a state of three scattered parts, it needed to be assembled. Two artillerymen built the firing position at the fastest speed, fixed the base steel plate, and then inserted the barrel ball shaft into the center of the base to give Connect, and finally build the gun mount.

The other two artillerymen opened the ammunition box, prepared ammunition as quickly as possible, and installed the fuze.

The whole process is standard and fast, and there is already a prototype of modern artillery.

Soon, the mortar position was constructed and the gun body was leveled. Zhao Zhangcheng, the main test gunner, stepped forward. With his extremely rich experience in gun shooting, he calculated the density position, manipulated the mechanical sights to adjust the height and direction angles of the gun barrel, and aimed at one. Kilometer target center.

"Cannonball!"

A mortar shell with a fuse already installed was handed over and handed to Zhao Zhangcheng. He took the heavy shell, put it into the barrel, and released it.

"Bang!" Accompanied by a dull and short sound, the gun body shook slightly, and the 60mm mortar shell flew out at a speed of more than 100 meters per second.

After a few seconds, the entire shell pierced the sky along the ultra-high trajectory, and hit the center of target No. [-] in a nearly vertical manner.

"Boom!" The loud explosion sounded as promised, a mass of flames emerged, the shell exploded instantly when it touched the ground, and countless metal fragments were scattered.

One shot!
Others may have to test fire and calibrate, but Zhao Zhangcheng doesn't need it.

"Okay!" Seeing the explosion of the shells a kilometer away, the boss immediately applauded, and the commanders of the surrounding units nodded one after another, with expressions of affirmation on their faces.

Seeing this, Chen Kang breathed a sigh of relief, but fortunately there was no problem.

The first shot hit the No. [-] target, directly raising the mood of the party A bosses outside the safety zone of the test shooting range. Zhao Zhangcheng, who was the focus of the audience, was not affected and continued the test shooting work.

Next, the maximum range accuracy test is carried out. As the name implies, it is to test whether the mortar can hit the No. 1.5 target with a diameter of 15 meters at the maximum range of [-] kilometers.

Zhao Zhangcheng re-controlled the mechanical sight, adjusted the muzzle to 45 degrees, and aimed at the second target.

Aim at the target and reload the shells.

"Boom!" The second shell blasted out, flew along the trajectory at high speed, cut through the sky, and landed precisely in the center of the No. [-] target. The explosion sounded, resounding like thunder, and countless irregular cast iron Fragments flew, tearing apart the scarecrows arranged in the surrounding area.

Seeing this scene, the bosses of Party A were elated, and the boss also had a smile like a spring breeze on his face.

In a word, satisfied.

Not far away, the onlookers of the secret service group at the headquarters looked at the soldiers of the Guashan Cannon Company, looking at the more than 20 [-]s waiting for the test firing in the test range, their eyes almost straightened, as if they saw a peerless beauty.

……

With two shots and two hits, Zhao Zhangcheng, the main test gunner, conquered the hearts of every Party A boss with his amazing top-level artillery skills, and the high-quality [-] presses created by the Military Industry Bureau won all the Party A bosses. of unanimous praise.

Rare mechanical sights, one person can carry a total combat weight of 19 kg, a 360° circumferential shooting field, a reliable electric furnace steel barrel, and a 1 km-level 5-meter radius shooting accuracy, not to mention other, This is completely the dream cannon of countless Red Army troops today.

The most important thing is that in the case of a single-handed gun, the shooting accuracy is still good, much higher than any mortar currently equipped in the army, and it can carry out high-intensity fire support for a short period of time.

With the last cannonball being fired, Zhao Zhangcheng, who was so cool with cannonballs today, really had a cannonball addiction.

When the 28 60mm mortars passed all the tests before leaving the factory, the boss announced on the spot that the 60mm mortar project of the Military Industry Bureau was finalized and mass-produced, and put into service, and placed the first order for a total of 300 mortars to Chen Kang, no, the first Batch task index.

300 4 mortars, according to the standard of 75 mortars per mortar company, can be equipped with [-] mortar companies, which is enough to increase the firepower projection density and strike capability of the troops by an order of magnitude.

"Chen Kang, how long will it take for these 300 mortars to be produced?" In the corner of the test firing range far away from the crowd, the boss stared at Chen Kang and asked, "The Japanese army has already attacked Pingjin, and it won't be long before the To attack Shanxi and Shandong in the south, the organization has already sent people to contact Nanjing, and the troops may have to prepare for reorganization.”

A week ago, the organization called Nanjing, gave a declaration of cooperation between the Kuomintang and the Communist Party, called for joint anti-Japanese, and said to the outside world that it could cancel the designation of the Red Army and change it into the National Revolutionary Army.

The Nanjing side has already moved, and the two sides are negotiating. After the negotiation is over, the troops will be transformed into the National Revolutionary Army battle order.

Once the adaptation is completed, it is time to go to war against Japan!

At this juncture, the mortars produced by the Military Industry Bureau are extremely important to the troops.

"According to the calculation of 5 barrel blanks per day in the electric furnace steel plant, it is theoretically about a month. Of course, the actual production speed is not so fast. Professor Zhuang and the lathe team are stepping up the production of key components of the air separation equipment. About three months later It can be produced and delivered to the troops." Chen Kang hurriedly said with a solemn expression upon hearing this.

"Three months... I understand. Li Qiang will be back in a few days. You should be ready." The boss nodded, without giving an order to shorten the time. He understood the current situation of the Military Industry Bureau. Whether it is the highest technology group or each department, they are all in the most tense state, and they are very busy every day.

"Yes!" Chen Kang nodded.