Transmigrated as the Crown Prince

Radio proximity fuze is also called VT fuze (VT is the abbreviation of variable time, that is, variable time). After the artillery shell equipped with radio proximity fuze is launched, the safety device is released, the fuze starts to be energized, and the vacuum tube is made into a radio frequency circuit to send out 180-220MHZ electromagnetic waves. When approaching an air target, electromagnetic waves will be reflected back and produce a frequency shift of hundreds of hertz due to the Doppler effect. At this time, the shell itself forms an antenna to receive the reflected electromagnetic waves, and filters and amplifies them through filters and amplifiers. When the amplified current reaches the threshold (meaning that the distance to the target has entered the effective killing range), the trigger can be completed.

In 2043, about 9,100 artillery shells equipped with proximity fuses and 27,200 artillery shells equipped with time fuses were used in air defense operations on the Pacific battlefield. About 1/5 of the results achieved by these artillery shells were proximity fuses. Obtained by fuze. The best combat record achieved with proximity fuzes was during an air defense battle. U.S. soldiers used artillery shells equipped with proximity fuzes to shoot down 91 of 130 incoming enemy aircraft.

In the later stages of the Pacific War, the islanders, who were really unable to gain an advantage on the battlefield, finally came up with the bad idea of ​​using one man and one aircraft to carry out a suicide attack to severely damage or sink the enemy's high-value targets. As a result, the highly efficient proximity fuse In front of us, the pilots of an archipelago country met His Majesty the Emperor in advance in the air before they could fight the enemy to death. Proximity fuzes greatly reduced Allied losses on the Pacific battlefield.

Therefore, the U.S. military regards it as a secret weapon with the highest level of confidentiality. In order to prevent dumb bombs from falling into the hands of the enemy, U.S. senior officials have made strict regulations on the environment in which proximity fuzes can be used, and only allow the U.S. Navy and British domestic air defense forces to use the proximity fuze when it is impossible to use it. It was used if the fuse fell into enemy hands. Therefore, until the Battle of the Bulge in 1944, there were no combat records of ground forces using proximity fuses. Historians commented that the proximity fuze was "undoubtedly one of the most important technological innovations during World War II" and affected the course of the war to some extent.

However, Germany's electronic technology is now far ahead of other countries. As far as Yannick knows, even the United States has no research projects related to transistors.

It is precisely because the transistor effectively reduced the size that the 88mm anti-aircraft gun shells were equipped with radio proximity fuzes, which are now used by the Guards X Force to deal with the bomber groups of the British and French coalition forces.

A cannonball flew out of the barrel and flew high into the sky at a speed invisible to the naked eye. The muzzle velocity of this FlaK 36 88mm anti-aircraft gun is 1050 meters per second, which means that the shell reaches a height of one thousand meters in less than one second and approaches the target.

The radio signal emitted by the warhead began to be reflected back by the target.

As the distance between the projectile and the target decreases, the Doppler effect causes the reflected radio waves to cause a low-frequency signal of 200-800 Hz in the current of the transmitter. This signal was filtered and amplified, and finally met the detonation requirements!

"Boom!" The shell exploded suddenly, and the dense shrapnel swept across like a storm. The bombers within the surrounding killing range experienced a terrible baptism of metal.

Some bombers were riddled with holes, and many crew members died on the spot at their combat posts.

But this is just the beginning.

The terrifying sound of anti-aircraft guns kept ringing from the ground, and the shells pierced the dark night sky one after another, flying towards the bombers illuminated by the searchlights.

In addition to this terrifying 88mm anti-aircraft gun, there is also the classic Bofors 40mm anti-aircraft gun. The shells have also been improved and use dual trigger and electrostatic proximity fuzes.

In addition to these two anti-aircraft guns, the German army also has the "Cheetah" self-propelled anti-aircraft gun modified on the chassis of the Jackal tank. The turret is equipped with four 20mm aviation cannons, which can fire 30 rounds per second and can deliver 1,800 rounds of 20mm per minute. Artillery shells, this firepower density and lethality can be said to be very outstanding in World War II. Now that the coalition bomber formation has dropped to an altitude of one thousand meters, it has given them a chance to show off their skills.

"Damn! The enemy's firepower is too strong! If this continues, our entire army will be annihilated!!"

In just an instant, several bombers were shot down, which really frightened the bomber pilots and made them complain.

"!!" The air commander was also extremely confused. The intensity of the German ground firepower completely exceeded their expectations.

But the Maas River is right in front of us. If we retreat at this time, wouldn't all our previous efforts be in vain? !

Before hesitating, the fleet had already approached the Maas River. At this time, nearly a quarter of the bomber formation had been lost, which can be said to be a heavy loss. However, the air commander no longer had much to worry about and could only continue to carry out the mission. "Throw flares."

Pieces of flares, pulling dazzling light, flickered and slowly descended, illuminating the place below brightly.

"Oh, damn!" the bombardier on the bomber couldn't help but wailed. He didn't know how many smoke cans the Germans on the ground had obtained. He saw thick smoke billowing below, and it was impossible to see where the river was and where the ground was. Let alone finding the pontoon.

At this time, the anti-aircraft artillery group gathered on the other side of the river before they had time to cross the river also began to roar. Although they were not equipped with shells with proximity fuses, there were more of them, and the dense artillery fire weaved into a terrifying sheet in the sky. firepower network.

"Drop bombs! Drop bombs! Get out of here!!" The air commander shouted loudly as the surrounding bombers fell one after another.

The bombardiers on the bomber didn't care about what was underneath. They directly pressed the bomb wrench and dropped all the bombs in the magazine.

When they hurriedly dropped their bombs and flew awkwardly away from the range of anti-aircraft gunfire, the bomber formation was only less than half of what it was when it started.

"Report to the general, the British and French bomber group has left the radar detection range!"

"Do we have any losses?"

"A light pontoon bridge was destroyed. Several soldiers were injured." These guys were blind cats and met a dead mouse. The bombs they dropped indiscriminately hit a pontoon bridge.

Guderian nodded. "Build a heavy pontoon bridge as soon as possible. We need armored forces to cross the river as quickly as possible."

There is an unknown highland ten kilometers south of Sedan, which is considered a dangerous place. If the French army occupied this high ground first, it would threaten the German army crossing the river. If the Germans capture it first, the Sedan breakthrough can be consolidated. Although Guderian had already sent infantry to occupy the high ground, he had to worry that the French armored forces would launch a storm.

The weather has been a bit sultry these two days, and it looks like it's going to rain heavily. Once it rains, the ground forces will lose strong air support, and coupled with the armored forces that cannot be reinforced in time, the situation is not very optimistic.