Bright Sword starts with the grenade flat.

Chapter 146 Keen battlefield intuition

It's just that the little Japanese pilot didn't seem to want to let go of the six pilots on the Eighth Route.

He actually turned the nose of the plane and rushed towards them while they were in free fall.

Fortunately, Liu Xiu was also required to train them to open parachutes at low altitudes.

Otherwise, I would probably be a living target for the Japanese fighter planes in the sky now.

But just as the Japs' fighter planes were chasing Wei Dayong and the others, Liu Xiu's fighter planes finally arrived.

It turned out that Liu Xiu always felt uneasy after Duan Peng and Wei Dayong flew away.

So after experiencing so many battles on the battlefield, Liu Xiu finally decided to lead the team in person to take a look just in case.

It's best if there's nothing going on. At most, it's just a waste of fuel. Anyway, there are oil fields on the Eighth Route and we don't care about such a small amount of fuel.

if…………

Liu Xiu controlled the plane to roll to avoid oncoming bullets, while observing the surroundings.

Following Liu Xiu's gestures, the fighter pilots who had originally planned to pull up immediately gave up pulling up and began to fly levelly in preparation for close combat.

When the little Japanese saw the newly arrived aircraft, they naturally gave up their pursuit of the pilots and instead targeted Liu Xiu and the others who had arrived as reinforcements.

When Liu Xiu saw that the opponent was targeting his side, he quickly made gestures to arrange tactics.

After all, one of the twelve Zhongkui fighters on the opposite side had already been killed.

There seemed to be no ifs. When Liu Xiu arrived, what he saw was planes smashed into pieces all over the sky, as well as the pilot who was about to chase and kill the pilot who jumped out of the plane.

Liu Xiu naturally did not fail to recognize the fighter plane like Wei Dayong and others. Liu Xiu, who saw that it was Zhong Kui's fighter plane, did not hesitate and immediately rushed forward to fight directly.

At this time, there were many planes led by Liu Xiu, and Liu Xiu himself had twelve planes. Therefore, in terms of quantity, Liu Xiu not only did not have a disadvantage, but had an advantage.

Yes, some of Liu Xiu's gestures include tactical gestures for command, including gestures for high-altitude tactics and horizontal flying combat tactics.

Liu Xiu breathed a sigh of relief at the performance of the teammates around him. They all clearly understood Liu Xiu's gestures, and they all imitated Liu Xiu's use of rolling to dodge bullets one by one.

Instead of directly increasing the climb rate compared with the Zhongkui fighter of the enemy as before, of course, everyone except Liu Xiu was rolling while using the Maxim machine gun on the nose of the aircraft to fight back.

The reason Liu Xiu didn't look at the fire was because he liked the feeling of hitting the target when he fired instead of shooting without confidence. Although Liu Xiu had tried his best to avoid it, the wing was still hit by several 12.7mm bullets. Fortunately, the wooden wing allowed the 12.7mm bullets to pass through and only left behind Just a hole the size of a thumb.

And there are no fuel tanks on the wings, so taking a few hits is no big deal.

Of course, Liu Xiu was not so lucky. For example, two planes were hit by 40mm howitzers from Zhongkui's fighter plane.

The wing was blown off on the spot, then spiraled and fell.

Yes, there are several versions of Zhongkui fighter aircraft, one of which is the one with a 40mm cannon.

Naturally, what Liu Xiu encountered this time was this version of the Zhongkui fighter. Being hit by the 40mm cannon was naturally a shock.

Liu Xiu was almost hit by the 40mm machine cannon. Due to the low muzzle velocity of the machine gun's shells, Liu Xiu watched with his own eyes as a shell flew past the cab of his fighter plane. past.

This made Liu Xiu feel lucky. Fortunately, the little devil didn't have the US's proximity fuze technology, otherwise Liu Xiu might have died by now.

As for what a proximity fuse is, let's talk about it. After the Zhengang incident, the American army and the little Japanese launched a war in Taipingyang.

The US military found that their ship's anti-aircraft guns were very ineffective in destroying the Japanese fighter planes. The limitations of the detonation fuzes and timing fuzes made the anti-aircraft shells very limited.

As the name suggests, the trigger fuse will detonate the shell only when it collides with the target. The timing fuze must first know the distance from the muzzle to the target to calculate the time required for the flight of the artillery shell, and then time the fuze. It is conceivable that it is difficult to master the fuze timing when the enemy aircraft is in a hurry when attacking.

The US warships use 20mm and 40mm machine guns to deal with enemy aircraft at close range, while the 125mm cannon is used to deal with long-distance targets. Of course, the enemy aircraft will be shot down before they fly close to the warship. It's the best.

所以米军急需一种引信可以当炮弹飞到目标旁时自动引爆炮弹。1940年8月，这个保密程度和蘑菇弹计划一样的研究项目开始了。1943年1月5日，一架小鬼子战机被米军海伦娜航母上的5寸炮扁下来，飞行员到死都不明白他的飞机旁为什么开了那么多的桃花。米军的秘密武器VT引信收了它第一个小鬼。

Of course, this kind of fuze is also called a proximity fuze.

This first-generation VT proximity fuze for 5-inch artillery shells is about the size of a beer mug. It is equipped with five tubular radio transceivers on its head. They continuously transmit and receive radio signals. When it flew about 5 meters away from the target, the electric detonator detonated the main detonator and the shell exploded.

The debris covers an area of ​​278.7 square meters. Shells that do not fly into the target area will automatically detonate after a certain period of time.

The specific working principle of the modern proximity fuze is as follows: the impact force of the projectile when it is fired breaks a small glass bottle containing electrolyte, the rifling of the barrel causes the projectile to start rotating, and the electrolyte is thrown towards the surrounding insulated electrode plates by centrifugal force. , a current is generated immediately, and the current immediately charges a capacitor. At the same time, the current starts a radio vacuum tube. The vacuum tube emits a radio wave. The radio wave reflected by any object will be received by an oscillator. The receiving radio wave and the transmitting radio wave will produce a "Ripple" electron pulses. This pulse will be amplified by a radio vacuum tube. When the projectile flies within 21 meters of the target, the pulse is large enough to activate an electronic thyristor. The current stored in that capacitor is instantly released, and an electronic detonator is detonated, which in turn Detonate the main detonator.

In order to prevent the proximity fuze from blowing up, the two small switches at the back are to prevent such a thing from happening. The first switch is the elastic metal centrifugal force switch, and the second and most important mercury switch. The first switch is open circuit at ordinary times. It ensures that the capacitor will not be charged. When the shell is fired, the rifling causes the shell to rotate. Centrifugal force is generated. When the centrifugal force reaches a certain level, the small piece of elastic metal will come into contact with the contact behind it, thus connecting the circuit of the capacitor. The second mercury switch usually short-circuits the positive and negative poles of the capacitor. When the cannonball starts to rotate, the mercury is thrown from the inner tube to the outer tube by centrifugal force through a microporous diaphragm, so that the short circuit of the capacitor is released. At the same time, these two switches form a new current loop and are connected to the electric detonator. When the cannonball fails to hit the target, the rotational speed of the cannonball will decrease. When it reaches a certain point, the reed of the first switch returns to the starting position and forms a complete circuit with the mercury in the outer tube of the second switch. , turn on the capacitor and electric detonator. The electric detonator explodes, completing the purpose of the self-destructing shell.

(End of this chapter)