The new fighter Saker can be said to be responsible for fighting for air supremacy, ground attack, long-range escort and other different tactical tasks, is the core secret of the tenth theater of operations, placed in the development of new tanks, Zhang Xuewu is too anxious, prototype production and assembly into the debugging and testing stage, after all, all the design is basically Zhang Xuewu directly specified, the birth of each new weapon to mass production must go through a large number of data tests, but also through the test of actual combat, but this car is low, four members, arc turret, The staggered overlapping arrangement of load-bearing wheels, the double-torsion bar reading suspension device improves its ability to drive at high speed in difficult terrain, and it is equipped with a 100-millimeter Lotgarov 48-fold barrel caliber tank gun smoothbore gun, and a medium tank with a thickness of 120 mm and a front alloy armor thickness of 240 mm and a weight of 30.2 tons of chrome-infiltrated manganese alloy steel.

1.7 meters of concrete obstacles, 2.7 meters wide anti-tank trenches, the whole car soaked in water, the effective range penetration of artillery, the new type of armor-piercing bullets and so on have all been tested, the test data shows that the car can be directly mass-produced, although the output of special chrome-infiltrated manganese alloy steel in Baotou Industrial Zone is not large, but the production of 25 vehicles per month is still certain, but Zhang Xuewu has never issued a production order?

Zhang Xuewu's decision disappointed the officers and men of the 1st and 2nd Armored Divisions of the Youth Army, who were eager to wear it, just by naming the new tanks as "Iron Cavalry Medium Main Battle Tanks," producing 120 units as reserves, and dispatching personnel from the 1st and 2nd Armored Divisions of the 1st and 2nd Armored Divisions of the Youth Army.

Because in Zhang Xuewu's view, the mass production of "iron cavalry" is simply an excessive waste, the opponent of the iron cavalry is not said himself, but the future positioning of the Russian Red Empire of the iron armored legion, to deal with the thin skin canned food of the said himself has a "jackal" style, it is already very face-saving for himself, and Zhang Xuewu is also worried that if the data of the iron cavalry is exposed, now the tenth theater under his command is carrying out a series of close cooperation with the Soviet side, if the Soviet side asks for a sample of the iron cavalry, he can not refuse, Once the Soviet army is equipped with a large number of iron cavalry medium tanks, then in 1941 I am afraid that it will not be Hitler's million-strong army that will be crushed, but the Red Army will be killed like a landslide.

Therefore, all the data of the Iron Cavalry medium tank were secretly blocked by Zhang Xuewu, claiming that a breakthrough had been made in the development of the Leopard tank, and the surname could completely surpass the German Leopard tank, and the Soviets could feel the foundation of Rehe through cooperation It can be said that they had a clear feeling, and they knew that this was probably the necessary propaganda to whitewash the face after the development of Rehe, and the new tank was not equipped with two armored divisions for a long time, and the Soviets only regarded it as a joke.

The Leopard tanks sold by the Germans to Rehe The Soviets have studied them in detail, and are stepping up the development of their own next-generation main battle tanks to deal with the potential threat of the Leopards.

Zhang Xuewu is actually a very unkind person, because the troops of the 10th Theater of Operations introduced a Soviet-made 100-millimeter Lotgalov 48 times the body caliber of the tank gun smoothbore gun, in fact, the armor-piercing thickness and accuracy of the 100 mm Lotgalov 48 times the body caliber of the tank gun smoothbore gun are not ideal, because the tank gun is mainly divided into two types: cannon and smoothbore gun, and the tank gun is the main weapon of the tank.

Tanks are mainly used in close combat, tank guns are required to have high effective firing effectiveness and penetration at a distance of 1,500 meters, the use of reliable tank armored vehicles used to annihilate and suppress the enemy, to destroy the enemy's living forces and destroy the enemy's firearms and fortifications, tank guns are evolved from small-caliber cannons, it can be said that most of the tank guns during World War II are a kind of cannon with high muzzle velocity and long barrel.

Zhang Xuewu's application of new technology has been at the forefront of the whole world, the Tieqi medium tank for the first time used the high-low and horizontal two-way stabilizer, to achieve a high accuracy of the unknotting method, this later extremely popular technology has become the key to the Tieqi medium tank walking between the shooting hit rate to ensure the key.

You must know that the tank is a kind of main battle weapon that combines attack and defense, and the smoothbore gun of a tank gun with a caliber of 48 times the caliber of a 100-millimeter Lotgarov body barrel will be exposed to the sun and the temperature difference between the upper and lower barrels of the body is about four, and the muzzle of the gun will be correspondingly offset by two dense positions.

For this reason, the barrel of the main battle tank gun of later generations is generally equipped with a heat insulation sleeve, and the general heat insulation sleeve is basically made of two layers of glass fiber reinforced plastic, and the middle is filled with foam plastic, and there are also heat insulation sleeves that are made of insulating materials or thermally conductive metal aluminum single-layer concentric sleeves, with the air between the body tube and the concentric sleeve as the heat insulation layer, or with metal and insulating materials arranged alternately on the outside of the body tube. Among them, the effect of the latter is very good, the heat insulation sleeve can make the heat generated when the gun is fired evenly distributed around the barrel, reduce the deformation of the barrel, and thus improve the hit rate of the gun.

The first method is subject to the material so there is no need to be killed, the second method cost is a huge problem, fortunately, the iron cavalry medium tank does not need large-scale mass production, its focus is to win with quality, after all, it is advanced almost an era of equipment, especially the new armor used by the iron cavalry with external armor, which greatly improves the battlefield survival coefficient of the tank.

But this is just a shield, the tank needs not only a shield, but also a spear, to penetrate the opponent's armor outside the effective range of the opponent, the introduction of the Soviet-made 100 mm Lotgalov 48 times the caliber of the barrel of the tank gun smoothbore gun obviously does not meet the requirements of Zhang Xuewu, Zhang Xuewu's request is to use ordinary armor-piercing shells at a distance of 1,000 meters, to penetrate the Stalin II heavy tank with 120 mm of frontal homogeneous armor, At a distance of 1,500 meters, the latest anti-tail armor-piercing projectile penetrates 150 mm of homogeneous armor.

Because whether it is the armor-piercing shells that can be fired by German-made 88-mm tank guns, the thickness of vertical armor-piercing at a distance of 1,000 meters is 140 mm, and the thickness of armor-piercing against inclined armor is 1003 mm, the main weapon of the Stalin II heavy tank tank is a 122-mm tank gun with a caliber of forty-three times, which can fire tracer armor-piercing shells and anti-personnel blasting grenades, and the armor-piercing thickness of vertical homogeneous armor of 1,000 meters is 190 mm, if it is within 300 meters, It has a lethal blow to both sides and tail of the hull of the Iron Cavalry, but fortunately, the Soviet-made 122 mm tank gun is only a transplant from a field gun, not a tank cannon or smoothbore gun, and its shooting accuracy is very average.

Therefore, Zhang Xuewu needs to equip the iron cavalry tank with a sharp spear to ensure that it can penetrate the opponent's armor beyond the opponent's range.

Therefore, Zhang Xuewu issued an order to the Artillery Research Institute, that is, to develop a new high-power tank gun with a caliber of 1005 mm to 120 mm on the basis of the 100-mm Lotgalov 48-caliber tank gun smoothbore gun.

The barrel of this new gun was connected to the tail of the gun with the help of a threaded coupling, which had to be easily disassembled. The bolt is used to lock the chamber, fire the cannonball, and draw out the cartridge, and the opening and closing of the latch can be carried out automatically. The cradle mounted the gun on the gun mount with its two trunnions.

The tail of the gun should be equipped with an anti-recoil device composed of a stationing and retreating machine and a reentry machine, which is used to consume the recoiled kinetic energy of the gun, return the recoil part to its original position, and make the gun in the forward position at any elevation angle to ensure the normal operation of the artillery. The firing device is used to fire the firing device, and it is required to be equipped with an anti-danger plate to protect the safety of the crew during firing, and the balancing machine located on the right side of the gun is used to balance the weight of the shaking part of the gun, so that the gun is light in the vertical and light, and the pitch is balanced.

Zhang Xuewu's request made the Jewish experts and Chinese technicians of the institute also very headaches, the quality of the 100 mm Lotgalov 48 times the caliber of the tank gun smoothbore gun has been almost extreme, on the basis of which it is difficult to make a breakthrough, the length of the tank gun body is more than 50 times the general caliber, because there are only more than 40 times the caliber of the long-barreled artillery, the projectile fired has a large muzzle velocity, large kinetic energy, a small angle of fire, and no more than 45, the trajectory is low, That is, the trajectory of the projectile when flying in the air is relatively straight, which is convenient for direct aiming, has high shooting accuracy, can penetrate armor at long distances, and is suitable for flat-firing hitting active targets such as tanks and armored vehicles and a single vertical target protruding from the ground.

Therefore, the research team can only choose between the cannon and the smoothbore gun, and finally the research team chose the smoothbore gun, Zhang Xuewu is not surprised at all by this, because the smoothbore gun is the mainstream development trend of the tank gun in later generations, and it adopts a multiple of the caliber of the high-body tube, so the armor-piercing ability is strong, its pipe wall is thicker, and there is no rifling, there is no rifling ablation problem, the resistance in the chamber is small, and the service life is long.

In particular, the ammunition of the smoothbore gun has a sufficient amount of ammunition and a large pressure in the chamber, so the muzzle velocity is very large, which can improve the armor-piercing ability of the latest type of armor-piercing projectile with a tail foil.

The Iron Rider Medium Tank also uses the latest technology in terms of steering mechanism, this two-stage planetary steering machine can improve the tank's maneuverability, so that the tank can use the smallest angle to complete the rotation without slowing down at high speeds.

In Zhang Xuewu's view, all that is needed for the Iron Cavalry Medium Tank is this sharp spear, and before it can become a blockbuster, the secrecy work needs to be strengthened.

(To be continued)