Chapter 307: Anya's three-shot burst

I won't go into detail about the principle, but simply put, it's the same as the proportional length of the sides of similar triangles.

There are scales representing mils near the observation center.

Now suppose that the height of an enemy tank occupies 6 mils in the observation, and it is known that the height of this tank is about 3 meters.

Then according to the mil distance conversion formula, it can be concluded that the distance between this tank and us is 3/6X1000=500 meters.

The same is true for length.

Anya had already asked Ruger about the length, width and height of the M-24P.

And in this state of flying through the sky head-on, it is obviously more appropriate to use the width to calculate the mil distance.

In short, Anya was actually constantly using the mil method to estimate the distance between the two sides.

When Ruger shouted "Fuck it", Anya also measured that the opponent had entered the four-kilometer straight-line distance area, and immediately fired a grenade.

As soon as this shell was fired, before the recoil device could pull the shell out of the barrel, Anya had already controlled the loader to place the next shrapnel shell in the pre-loading position.

After the gun body was completely recoiled, she immediately pushed the second shell into the barrel, quickly adjusted the muzzle with the elevation machine, and then sent the second shell out.

Then, the third shell.

Originally, the maximum firing rate of this tank gun was only 15 rounds per minute.

Even if Ruger's automatic loader was extremely efficient, it only increased the firing rate to about 20 rounds per minute.

One shell every three seconds is fast enough.

But Anya just fired three consecutive shells in one go, and it only took a little more than five seconds in total, which was nearly twice as fast as the fastest.

After these three shells were fired, even Ruger in the front driver's seat couldn't help but whistled in praise, saying "well done."

At the speed of 400 kilometers per hour on the opposite side, it takes about 36 seconds to take off from four kilometers away to the top of Ruger's head.

4 kilometers/400 kilometers per hour = 01 hour = 01x60 minutes = 01x60x60 seconds = 36 seconds.

Although this time is short, it is not so short that people can't react before it whizzes by.

However, the aircraft still has the problem of flying altitude, and four kilometers is the straight-line distance between the two measured by Anya, and the Pythagorean theorem must be used to calculate the length of the base to get the straight-line distance.

That must be longer than the hypotenuse of four kilometers.

So the actual time is even less.

This is not counted, because the elevation angle of the tank gun is between -9 and 20 degrees, and the range of activity is only about 30 degrees.

The slope itself is about 47 degrees.

Then the actual attack range of the tank gun is about 38 degrees to 67 degrees.

Of course, in fact, Anya asked Ruger to adjust the position of the vehicle body on the slope because the angle was too high.

Counting these, Ruger can level the tank.

Therefore, if the negative angle is ignored, the actual attack range of the tank gun can still be from 0 degrees horizontal to a maximum of 67 degrees.

Even if the conditional time in between can be ignored, at least when the opponent's helicopter flies above 67 degrees, Anya cannot directly aim at it.

This part will also reduce Anya's actual attack time again.

Therefore, although it was initially calculated that it would take 36 seconds for the opponent to fly over, which was enough for the tank gun to fire more than ten shells at a rate of 20 rounds per minute, it was not actually the case.

There was not much time left for Anya to attack, and with other tasks such as adjusting the muzzle, the time she could use was only about 20 seconds.

It was also because of this that her extraordinary performance of three shots in five seconds not only made Ruger applaud, but also surprised the "big dog holding a cigarette" in the sky.

The three-shot shrapnel shells could not reach the speed of Mach 5 that the long-rod armor-piercing shells could easily reach because of the aerodynamic shape, but they were also much faster than the less than Mach 3 of their brother fired by the 75mm gun.

At more than four times the speed of sound, the next shell basically flew in front of the big dog when it rushed out of the barrel.

The delayed fuse still detonated the shell of the ammunition before the remaining six or seven hundred meters to hit, scattering hundreds of tungsten alloy projectiles, turning into a rain of steel beads that directly hit the big dog's face.

Ding Ding Ding~

Amid the sound of metal collision, the second rain of steel beads blew up again.

Then there was the third one.

The shrapnel shells fired by Anya were still typical kinetic energy shells.

Their penetration and damage effects were heavily dependent on the speed of the projectile, that is, kinetic energy.

After flying two or three kilometers, their speed had actually decayed quite seriously.

Even if the smoking big dog himself was considered to be colliding head-on with the projectile at high speed, the first batch of tungsten alloy steel beads actually did not break through the big dog's outer armor.

But with the addition of the second and even third rounds of steel beads, things were different.

In a few seconds, not only did the distance between the two sides decrease by hundreds of meters, but the time point of the delayed fuse's early explosion was also relatively postponed.

Although the dispersion of the steel balls was affected and gathered together, the kinetic energy attenuation was greatly reduced.

Under their continuous action, the sound of ding ding ding resounded, and finally with a piercing sound, a steel ball penetrated the armor and entered its structure.

And this sound was just a representative, and more steel balls were followed by hitting it.

This time, even the thick armor of the Mi-24P could not hold on. The cigarette-holding big dog that had just rushed towards Ruger with great momentum finally turned its head, ignoring the risk of a rapid turn at high speed and even a crash, and wanted to avoid the flight trajectory of the next shell from Ruger.

It ran away without any scruples, without giving itself any face, and ran away.

The moment it turned its head and ran away, Ruger even felt that he saw the paint of the big dog twisted because of the pain.

Even the look it gave him was mixed with a considerable degree of fear.

"The ammunition scratched the paint?" Ruger muttered to himself uncertainly.

"What?" Anya asked hurriedly.

"No, nothing." Ruger shook his head, quickly shifted gears and retreated, driving the car down the slope, and chasing the direction of the big dog.

"Come on, let's continue!"

He meant for Anya to continue firing at the escaping big dog helicopter.

At the current angle between the two sides, the tank's main gun can barely aim at the helicopter that has fallen from a high altitude to a position of 300 to 500 meters due to stalling.

In addition, the two-way stabilizer modified by Ruger can ensure a certain accuracy of the Leopard 2A4 during driving, even without the assistance of electronic chips.

So Anya nodded directly and said "OK", and then got busy again.

That being said, without the participation of electronic chips, many mature technologies of later generations cannot be used directly by Ruger.

Although there is a two-way stabilizer, it can ensure that the tank's main gun has a fairly good accuracy while moving, but the target of their attack this time is after all the aircraft in the sky.