The helicopter's flight principle dictates that its speed is not too high, but its vertical take-off and landing, so that it does not need to use a dedicated runway, is a huge improvement.

Now, there is no truly qualified helicopter in the world, and under the impetus of Ciric, the improvement of the helicopter has finally come to life.

These days, Ciric has been busy directing the war on the Eastern Front, and for him, he is mainly responsible for formulating strategies, and the tactical aspects are determined by the subordinate commanders, without interfering too much, and he also believes that the fierce generals under his command will not disappoint his hopes.

Just after the helicopter had been inspected and many suggestions were made for improvements, Ciric had not yet returned to his fort when he received another piece of exciting news.

"Führer Cirek, the reason why our armor-piercing shells could not penetrate Stalin's tanks has been found." Albert Speer, who is in charge of military production, said.

In the battle on the front line, the new German tanks were majestic, all the way to the city, and the main force of the Soviets, the T-34, has proven to be a backward product, and can only be resisted by the same number as the sea.

However, the Soviets' new Stalin tank surprised the German tank crews, and the German ace weapon, the sub-caliber armor-piercing projectile, was actually ineffective against this tank.

Fortunately, from the battlefield, they captured an almost complete Stalin tank, which was immediately transported back to the rear and sent to the artillery specialists of Henschel and Krupp for study.

"Their tank turret is tilted too much." Knipokamp, a representative technical expert of the military, also participated in the analysis, and at this time, in the shooting range of the Henschel company, Knipokamp carried out a detailed analysis through high-speed camera shooting and then playback.

The previous T-34, which was just ordinary inclined armor, and the current Stalin's tank, which simply developed this tilt to the extreme, became a terrible turtle shell.

The small space inside the turtle shell was a disaster for the big Europeans, and even the Soviets began to look for small guys to work as tank crews.

And now, this hemispherical turtle shell, the higher the up, the greater the inclination, it is simply the smoothest shape of the bullet.

In this way, when the armor-piercing projectile flew over, it was like a splash, and it was directly ejected, and a serious ricochet occurred.

At the same time, this can also explain the ineffectiveness of advanced sub-caliber armor-piercing shells, but the blunt-headed armor-piercing bullets used in the past can have good results, because blunt-headed armor-piercing shells have a positive effect, which can reduce the inclination angle and even become a vertical infusion.

However, this kind of turret was cast too thick, and its own blunt-tipped armor-piercing shells could not penetrate it from the front, so this tank of the Soviets posed a new challenge to the German technicians.

"It seems that we can only put our 105mm tank guns on them." A technician said: "What cannot be penetrated by an 88-mm tank gun, a 105-mm tank gun is absolutely fine." ”

The development of German tank guns was upgraded in the order of 75, 88, and 105, and now the main force of Germany is the 88-mm tank gun, but the pre-research of the 105-mm tank gun has already begun.

"Nope." Who knows, this proposal ushered in Alfred's opposition: "Our 105 mm tank guns are still secret, especially the electroslag remelting steel and self-tightening processes proposed by the Führer Shirek, we have not yet thoroughly mastered it, and we cannot launch it now, especially because our army is equipped with a large number of 88 mm guns, if we directly replace them with 105 mm, our production is insufficient, and it will also bring great waste." ”

It is not so simple to change the caliber of the main tank gun, and now, the 88-mm tank gun still has a lot of potential, how can it encounter a small twist and turn and change it to a new tank gun?

The German way of thinking is not to brush the caliber.

Look at the Stalin tank, with a 122-mm gun, the caliber is too large, and the power is not small, but the amount of ammunition is too small, the reloading is too slow, and it is not suitable for tanks at all.

"Yes, we'd better improve on armor-piercing shells, this little difficulty, will not stump us." Knipokamp said: "With regard to the analysis of the failure of the tank shells against Stalin's tanks, I immediately submitted it to Führer Shirek, and I am sure that our Führer will certainly give us a more suitable idea." ”

This is simply unbelievable, the artillery experts present are simply ashamed to ask their own head of state to solve the problem when they are helpless in the face of the problem.

However, they are proud that their Führer is omnipotent, and the original sub-caliber armor-piercing bullet was proposed by the Führer Shirek, and the scheme of using the butt simply subverted their understanding, they are all old experts, but the admiration for the Führer Shirek is absolutely from the heart.

Now that there is a problem, they can't solve it, and Führer Ciric must have a solution.

Of course, there was a solution, and just when they had been meeting for two days in a row to discuss a solution, the instructions of the Führer Ciric finally came.

The instructions were sent by telegram and were not many words, just a short line:

The tail structure has been improved to reduce the rotation of the projectile.

With this instruction, Knipokamp slapped his head fiercely, what a stupidity, such a simple solution, why did he not think of it?

A sentence woke up the dreamer.

Why is there a ricochet? It has a lot to do with the structure of the opponent's turret, the inclination angle is large, and the shells are hit diagonally, which makes it easy to be ejected, and at the same time, there is another reason.

It's the shell that's spinning.

The rotation will stabilize the shell, which is a huge invention, when the musket was first used, it flew from a distance of 100 meters, and with rifling, the bullet rotated and the trajectory would be extremely stable.

After that, until now, whether it is a gun or a cannon, almost all of them are rifled, and they use rotation to stabilize.

There is nothing when the blunt head is armor-piercing, after all, the bullet body is thick, and the current sub-caliber armor-piercing bullet is different, its essence is a shell-out armor-piercing bullet, the projectile body is slender, and when it rotates, the stability will be reduced.

Objects of the same diameter but different lengths become more unstable the longer they become more unstable at the same rotational speed, and now, as German artillery experts want to further increase the aspect ratio, this disadvantage has begun to become apparent.

On the other hand, when it comes into contact with the opponent's turret, the warhead spins too fast and is more likely to be ejected.

Finding this reason, there is an improved solution.

Reduce the rotation of the projectile, so that the probability of ricochet can be reduced, and the trial production will be carried out immediately according to this idea!

Later generations are such a principle, shelling armor-piercing bullets are tail stable shelling armor-piercing shells, because in later generations, almost all of them were smoothbore guns, there was no rifling in the barrel, and the cannon ejected out, all relying on the tail to stabilize, similar to bows and arrows.

However, in the seventies and eighties, the main force of NATO was still a 105-mm rifled gun, which also fired a tail stabilized shell-piercing shell, and this kind of tail, after flying out, helped to reduce the rotation, reducing the rotation speed of hundreds of thousands of rpm to several thousand rpm.

In fact, the tail of the smoothbore gun is not non-rotating when the stabilized armor-piercing projectile flies, and the deflection angle of the tail can give the core a rotational force, and the rotation speed of the core is about several thousand revolutions per minute.

It can be seen that several thousand revolutions per minute is the best rotation speed of the slender projectile, which not only maintains stability, but also reduces the possibility of ricocheting.

(There is also the saying of sliding the cartridge belt, and the East China Hero has not been in contact with it very much, I hope that the familiar ones will be greatly solved, and two more chapters of technical ones, I hope you will not get bored.) ）

Now that you have the idea, let's start experimenting!