1579, the flare was launched into the air, and Gatlin opened fire.
Hu Chatu angrily punched the wall, sparsely and sparsely. Unexpectedly, these black men were so cunning and actually arranged a rope-connected alarm bell on the inside of the wall.
When the alarm bell rang, it was very sudden in the empty night. Because everything was quiet at this time, such a loud sound immediately alerted the security regiment soldiers in the turrets on both sides.
A firework was lit, shot into the sky, and suddenly exploded into a huge flower ball high in the sky. The entire wall and the open space outside the wall were instantly illuminated. The densely packed crowd was suddenly exposed.
All of a sudden, all the turrets were lit up.
There was a carbide lamp searchlight on the platform of each blockhouse. At this time, they were all lit. The carbide lamp was an acetylene lamp, which was extremely bright. Under the reflection of the hemispherical mirror behind the lamp, the light column was swept outward at once.
The off-white wall reflected strong light, illuminating everything below.
Luo Siyuan, who had been sleeping with his clothes on, woke up and came to the command position, a bunker above a gate.
"Captain, Jian Nu wanted to take advantage of the night to touch him, but he accidentally triggered the alarm bell and was discovered by us," Staff Officer Xu Shuo reported.
"Well, you did a good job of turning on the searchlights in time. But it's not enough. We use the only three gas tank mortars we have in hand to fire illumination bombs, one every three minutes. Let me light up the night sky."
Luo Siyuan looked at these officers and continued: "Immediately order all the bunkers to open fire, and the searchlights will cooperate. The Gatling cannon on the top of the bunker uses shotgun shells. After the illumination bomb explodes, it will fire immediately. There is no need to save ammunition. Now there are buildings below.
Slave, just keep shooting."
Following the order, a large number of gunners ran to the gun positions on the top platform of the bunker and immediately loaded the Gatling cannon with ammunition. As the canvas belts were installed, the gunners shook various balancing machines, high and low, and loaded the six
The muzzle of the gun was pointed at the wall.
At the same time, the side firing ports of the bunker and turret were also aimed at the climbing slaves, and the air rifles began to fire intensively. In the bunker, gas tanks were piled up. These shooters installed a gas tank and pressed in a 30-round
magazine, and then extend the muzzle of the gun from the firing port on the side.
They fired a burst of fire at the Jian slaves riding on the wall and those on the ladder. Except for a few people who successfully climbed over the wall and beat down the city, everyone else was blocked on the wall and ladders.
The distance between the two turrets is only fifty meters, and under the illumination of the carbide lamps on the sides, they are all bright.
An air rifle can be used to pull the trigger at the slave sitting on the wall. The air rifle does not need to pull the bolt or load the ammunition. It can directly empty the magazine just like a single shot of a semi-automatic rifle.
In the dark night, those red-toothed soldiers who climbed up the wall were beaten down like fallen leaves, screaming and smashed into pieces.
Huang Taiji didn't expect that he would still be discovered.
He said gloomily: "Don't stop the attack. Tell Li Yongfang that night is always more advantageous than day. The whole army will press forward. The Han army flag will take the lead, and the Eight Banners will follow up to capture this city in one fell swoop."
This city within a city has become a problem for him. If it is not defeated, it may cause him to have inner demons in the future. Ten days have passed, but no effective results have been achieved. The casualties are already terrifying.
.
Like a gambler eager to make a profit, he directly ordered the entire army to attack and climb the wall tonight, rushing in in one fell swoop.
More than 50,000 people from the Eight Banners formed a dense formation, carrying ladders, and surged in from three sides. The shouts were like a mountain roaring and a tsunami.
Luo Siyuan sneered and said: "Jiannu, is this because Guizhou's skills have been exhausted? The sneak attack failed, so it was changed to a violent attack."
"Are the flares ready? Are they going to be fired?" Lu Gong, the captain of the servant artillery team, asked.
"Fire, fire three rounds every three minutes, let me light up all the open space outside the wall."
Boom, boom, boom! Three loud bangs were heard. Li Yongfang shuddered. This was the kind of cannon that scared them so much that they ran outside the city before. Now, it was fired again.
However, this time, after waiting for more than ten breaths, I did not hear the sound of the landing explosion. Instead, the sky suddenly flashed, and then a high-brightness white spot appeared in the sky. Then, the white spot quickly grew in size and was suddenly illuminated.
ground.
Illumination bombs are actually quite simple. They are ammunition containing an illuminating agent inside the projectile to emit light. Aerial bombs, artillery shells, etc. all have this type of ammunition.
A time fuse is usually used to ignite the projectile at a predetermined aerial position. The ignited lighting torch and the parachute system are thrown from the bottom of the projectile.
Driven by the parachute and slowly descending, the illuminant emits strong light to illuminate the target area.
All elements of this thing are not difficult. Yang Fan was able to make illumination bombs in the Ming Dynasty. The difficulty is how to launch them into high altitudes. Only when the height is high enough, can they slowly land under the drag of a parachute to increase the lighting time.
The gas tank mortar can shoot high enough, and can fire 50-60 kilogram shells. With a large charge, the illumination time will be long, so this is basically not a problem.
As for flares, they are easy to make. There is a special lighting device inside the flare, which contains an illuminating agent. It contains several substances such as metal combustibles, oxides and adhesives.
Metal combustibles are mainly made of magnesium powder and aluminum powder. When magnesium powder and aluminum powder burn, they can produce high temperatures of several thousand degrees Celsius and emit dazzling light. The oxides are barium nitrate or sodium nitrate, which can release large amounts of light when burning.
The oxygen accelerates the combustion of magnesium and aluminum powder and enhances the luminous brightness.
Adhesives are mostly made of natural dry oil, rosin, shellac and other raw materials. They can bind the medicaments together and act as a retardant to ensure that the illuminant has a certain burning time. The illuminant is placed in the illuminant box.
, a parachute is connected to the lower end of the box.
All these materials can be found in Daming. So, there is basically no problem.
Magnesium powder and aluminum powder can be used as waste products collected by Erlunzi. Many inner pots of scrapped rice cookers are made of aluminum. Magnesium powder is not difficult. Yang Fan has magnesium ore in his hand and can extract it himself. As long as he has a gas generator.
Magnesium is produced through incineration.
In fact, coal can also be smelted, but there are more impurities. Yang Fan's open-hearth furnace is equipped with a gas generator and is smelted with carbon monoxide. It can also be used to smelt magnesium metal. Magnesium mines are distributed in the four provinces of Henan. You can mine and smelt nearby.
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After three rounds of heavy illumination bombs took off, when the projectiles flew into the predetermined airspace, once the time set by the time fuze calibration was reached, the illumination bombs began to ignite, igniting the projectile powder and igniting the illuminating agent.
The gas pressure generated by the propellant throws the illuminating agent and the parachute out of the projectile. The parachute can be opened under the action of air resistance. The lighting box is hung and slowly falls at a speed of 5-8 meters per second, burning, so that incandescent light is emitted towards the projectile.
earth.
The Jian slaves on the ground were dumbfounded. They felt a flash of white light above their heads, and they suddenly entered the day from the pitch-black night.
The light emitted by a medium-caliber flare can reach 400,000-500,000 candlepower and last for 25-35 seconds. It can illuminate targets within a radius of 1 kilometer. Yang Fan's gas tank charge is obviously much larger than the medium-caliber one.
.Yang Fan's flares can continue to illuminate for three minutes before falling.
Under the intense incandescent light, the entire battlefield and half of Zunhua City were illuminated like daylight.