The advantages of being located on the outskirts of the city have been well reflected in the weapons evaluation field, and the evaluation area of the Yingtian Arsenal is so large that it is boundless and endless.

Wang Huanan stretched out his finger and introduced quite proudly: "There is a thirty-mile-long artillery survey plot over there, unless it is the maximum range of three and a half inches and above field artillery, we can measure anything here." ”

Even the Type 30 112mm cannon has a maximum range of 17.5km, not to mention the trial 36 Type 144mm cannon with a maximum range of 25km.

A truck brought two launch canisters, 10 rockets, and four nickel-manganese steel plates about 15 mm thick and 2.25 square meters.

Several staff members removed the heavy steel plate in unison, then set it up on the steel frame in the assessment area, and then ran back quickly.

The sample of the bazooka made in the arsenal is very rough, the main body is a seamless steel pipe, the grip and shoulder rest are made of steel, welded, and the whole is sprayed with a layer of earthy yellow paint.

The main body of the rocket, the fuse, and the propellant cartridge were separately packed, and Zhou Changfeng leaned over to look at it, and then picked up the fuse and inserted it into the bottom of the rocket body; Finally, the propellant cartridge is also inserted into the bottom of the main body, because there are prefabricated threads, so it is tightened after two rotations.

"By the way, is there inertia insurance?"

"Yes, you didn't draw a sketch, but we added it, and it's a mortar fuse for the time being."

Wang Huan'an and others used the C-word No. 1 fuze, which is actually a small fuse usually used for mortar shells, after pulling the fuse, its inertia safety will be unlocked when it suddenly accelerates.

But it is essentially a warhead fuse, and this type of rocket should use a bottom fuse, but at present, it is only a temporary test, and it does not hurt if the dud rate is high, and a separate special fuse can be developed in the future.

Pull out that fuse, then insert the rocket into the canister, and the whole weapon is ready to fire.

"I haven't designed a grip insurance for the time being, and I'll add it later. Then, this electric ignition mechanism is estimated to be unreliable in the field, and it will inevitably fail to pass the acceptance of the Ordnance Bureau, and it will definitely have to be replaced. ”

The principle of electric ignition is very simple, that is, the battery is short-circuited and ignites the propellant, but the battery is not reliable in the cold zone and the tropics.

Wang Huan'an and several staff members retreated to both sides, and then jumped into the half-man-deep trench, leaning on sandbags to carefully observe the target.

80g of black powder as a propellant, launched at an angle of 45 degrees, can reach up to nearly 100 meters, but at this distance the warhead is almost flying randomly, the landing point deviation is very large, and the best range for relatively stable shooting is about 50 or 60 meters.

"Do you want someone else to test the launch?"

"No, what are you afraid of when you make the canister so thick?"

The bore pressure of the launch canister is very low, and only a seamless steel tube with a thin wall is required, but the launch canister of the current prototype rocket launcher is thick and heavy.

Circumference straightened the opposing folding sight above the canister, then turned back to make sure there was no obstacle behind it to prevent tail flame burns.

Aim for the target ahead and pull the trigger!

The current was short-circuited, the propellant cartridge was ignited immediately, the black powder burst into flames instantly, the tail flame was spouted backwards, and the main body of the warhead was also pushed out.

"Bang!"

The warhead is suddenly subjected to this acceleration, and the inertia safety unlocks; After flying away from the launch canister, the four folding tails in the tail of the main body unfolded, and the warhead flew in an arc towards the target plate.

And then... And then it's gone?!

There was no explosion, no roar.

Zhou Changfeng vaguely heard a "bang", which was the sound when the warhead collided with the nickel-manganese steel plate.

"Normal, dumb fire." Wang Huan'an, who had become accustomed to this, turned around and shouted: "Deal with the duds!" ”

After speaking, he beckoned everyone to retreat into the trench and stay hidden.

At this time, a gunshot was heard not far away, and then a second sound, "Bang-bang-boom!" ”

An arsenal clerk who had been prepared for a long time fired armor-piercing and incendiary bombs with a battle gun in a bunker a few dozen meters away, and simply detonated the dud.

Then a few people walked over to check it, and after confirming that it was correct, they re-straightened the target.

"The fuse used now is really unreliable, and then it would be nice to design a fuse specifically for it." Wang Huanan didn't care.

The perimeter then reassembled another warhead and then aimed again for launch.

"Bang-boom!"

Flames burst out, smoke flew up, and this shot was successfully detonated.

After the smoke cleared, several people walked out of the trench from the side and stepped forward to check.

"Half an inch of steel plate is not worth mentioning to it, it's like poking tofu with chopsticks."

"Indeed."

"How does it feel?"

"The launch canister is too bulky, are you just picking a steel pipe? The pipe wall could be a little thinner, right? ”

Wang Huan'an nodded, "Yes, I picked a batch of suitable thickness in the warehouse at that time." ”

Zhou Changfeng thought back for a moment, "Also, the position of the shoulder rest is a little back, and it is better to move it a little further." ”

Although there are many flaws and problems, this thing is still unsatisfactory as a test sample.

After being evaluated by the Ordnance Bureau, it will be re-improved, and then a small batch of trial production will be distributed to the troops, and then the feedback from the soldiers will be used for further improvement.

In any case, it gives Ming infantry units the ability to hunt down any armored vehicle in the world, but only if they are within fifty meters.

The firing range is 50 meters instead of 5 meters, and the ability to penetrate the armor in real combat is 50 millimeters instead of 15 millimeters, which is quite impressive.

Wang Huan'an took Zhou Changfeng to a storeroom, and then pointed to a thick armor plate placed next to it, on which the burn marks left by the explosion were visible.

And... A thumb-thick, deep hole.

Zhou Changfeng touched the hole, turned around and said, "No one can resist this temptation, right?" ”

"Those who don't know the goods can't enter the Ordnance Bureau." Wang Huanan suddenly thought of something, and then said: "Speaking of which, according to the rules, after adopting it, the Ordnance Bureau will have to give you a bonus, and it is estimated that it will be at least 5,000 yuan." ”

Oh, yes, it's not for nothing to make inventions and designs, so wouldn't you be able to apply for a patent?

Seriously, Zhou Changfeng really didn't think about it that way.

Now when he mentions it, he inexplicably thinks of an old meme - Stoner has a patent for the M16 and has become a multimillionaire, while Kalashnikov, the inventor of AK47, can't even afford a plane ticket.

He remembered that the second prize of the Technological Invention Award in later generations was 150,000 yuan, the first prize was 300,000 yuan, and the special prize seemed to be 1.5 million yuan.

And the 5,000 yuan that Wang Huan'an said is equivalent to more than 200,000 yuan in later generations, and at least, maybe it will be more.

Coincidentally, when Zhou Changfeng left the arsenal and returned to the station, Xiao Li told him that a letter had been sent from the clerk of the Metropolitan Governor's Mansion.

Aha? If you have something to call, what needs to be communicated in writing?

Zhou Changfeng, who was a little puzzled, approached the table, and after opening it, he found that there was some kind of stationery here, which was a fixed check of 5,000 yuan.

Co-author: This is Shen Yu's so-called "special allowance", right?

(End of chapter)