On the intercity bus at the Mimir Hot Spring Market in the 18th District, Xueming leaned against the window and looked at the tundra scenery outside the window.

Oscar didn't come with him. The big green wolf's herbology mission was very long and he had to stay in Saladin for more than half a year. Before he left, the big wolf dog shed tears pitifully - because the big yellow chicken came back with him.

Saladin, seeing that the priest was about to leave, became anxious and began to pluck Brother Wolf's hair with his claws.

Brother Wolf is no match for this griffon. He can only tame the griffon slowly depending on fate.

It was already two days later when Jamie and his daughter returned to the Mimir Hot Spring Market. When they arrived at the Shuxin Apartment again and settled the father and daughter in place, Xueming finally breathed a sigh of relief——

This matter is done well, and now we just have to wait patiently for Jamie's work.

Speaking of Jamie's "rocket launcher", Xueming had some ideas in it. Light infantry weapons that facilitate rapid marches usually don't have much lethality. Using conventional bullets to deal with disaster beasts has little effect, let alone the Crazy Butterfly Holy Cult.

Red Morpho Butterfly - these enemies with extraordinary soul power are more or less immune to bullet damage, unless you put the muzzle of the gun into their mouths and perform a passionate [mouth beep] to complete the execution.

Take the standard combat unit Johnny Johnny as an example. His soul power [Heaven-shaking] is blessed by an elixir, and his range and endurance are incredibly powerful. He can apply different gravitational forces to the warhead to complete the bullet avoidance operation. Seven years ago in You

In the Lika Dome, Xueming competed with this powerful enemy. Winning this duel depends on endurance.

If ordinary ammunition is difficult to work, Xueming will look for explosives, especially bombs with cloud explosives to deal with difficult enemies. The red morpho units blessed by the elixir need more oxygen, and cloud explosive bombs will kill them.

Extremely efficient. Burning out all the oxygen in a narrow room environment can quickly reduce the combat effectiveness of these undead monsters.

He needed a type of ammunition that could be produced in large quantities, while retaining the lethality of the warhead, and at the same time, the range should not be too high.

At the exhibition, Jamie showed off this rocket launcher, which gave Xueming hope of making heavy firepower portable.

Another week later, during the time when Xueming found Mr. Wen Bucai to chat and fish, Uncle Jamie handed over his answer sheet. He took two weapon boxes to the northern tundra of the hot spring market, and in the cold

On the frozen lake, along the small tents, you can find the priest and Wen Bucai who are fishing in the ice.

Uncle Jamie opened the curtain of the tent, took in the heat and went to the stove, squeezed next to the priest, and put down the box.

"Father Zhang Congfeng, I've prepared what you want."

With that said, the old gunsmith took out a CZ-75 modification from his toolbox. His earliest prototype was based on the CZ-75, because the pistol's aiming baseline was very low and it was easy to aim.

"This is its earliest appearance. In fact, it doesn't matter what the launcher looks like - what matters is the propellant."

Jamie explained patiently.

"For more than two months, I have been reversing the contents of the flechette, overturning it again and again, and finally I have a decent launch process. I have prepared two flechette plans for you. When you have time

?"

"Yes! Yes, yes!" Xueming stayed in Mimir Hot Spring for so long just for this moment.

He quickly pulled Wen Bucai out and asked Mr. Wen to come with him to witness Wuming Doe's new weapon.

Wen Bucai couldn't move his legs while holding the fishing rod: "I just made a nest! Holy shit!"

The three of them came to the frozen lake and chose an open area. Jamie took out a few arrow-shaped bullets from his pocket, stuffed them into the magazine, and put them into the gun chamber - and then handed them over to the priest.

"Try it." Jamie licked his lips nervously. This firearm has been adjusted and modified in his hands for several years. The whole process was stop and go. At first, it was made for sailor equipment for the Eureka City Hall, and later

And because of my daughter’s illness, I was running around raising money, so I had no time to take care of this scientific research work.

Jiang Xueming pointed the muzzle of the gun at the empty tundra, and then pulled the trigger.

A crimson flame spurted out from the muzzle, and then the arrows were like a straight meteor, streaking across the dark sky and earth. It was getting faster and faster. Xueming immediately took out his mobile phone to call the ruler tool.

The projectile completely lost kinetic energy after 1,200 meters and fell to the ground due to natural gravity.

"Its muzzle velocity is only 120 meters per second." Jamie explained: "It uses liquid hydrogen propellant, and the primer is still the structure of conventional ammunition, and it is ignited by firing a firing pin."

"But after flying thirteen meters from the muzzle, its speed will exceed four hundred meters per second, and then it will get faster and faster. It is suitable for long-distance combat, but..."

"But the shooting accuracy is terrible." Xueming rubbed the handle of the gun and took over Uncle Jamie's topic: "After exceeding the speed of sound, the flight trajectory of the rocket begins to become fantasy."

"I can't guarantee this..." Jamie looked embarrassed: "It would be a waste of effort to get started. I don't have that much money to buy experimental materials, and I don't have that much time to learn the air of rockets of this size.

Dynamics - you can only try it a little bit."

Xueming took out an arrow bullet from the magazine and carefully observed the shape of the bullet——

——As Uncle Jamie said, it is a great joy that this weapon can shoot things. It can maintain the flight attitude of the arrows at subsonic speeds. But in a supersonic environment, the burning liquid hydrogen warhead

It reacts violently with the air. It is not enough to only rely on a push hole to resist wind pressure.

This warhead still uses rifling cutting to complete the spin movement to maintain the ballistic attitude. This is the most scientific and lowest-cost method for traditional firearms, and has been tested in a large number of actual combats - but when it is used to launch rockets, such a small amount of rotational force is not enough.

Not only are the number of rifling circles insufficient, but the cutting depth of the bullet is also insufficient.

Its power relies entirely on propellant, and the thrust will become stronger and stronger in the second half of the journey. After exceeding the speed of sound, the projectile's trajectory will have obvious left and right tilt deflections, all turning into a turning banana trajectory, five times in a row.

It can't hit targets ten meters away.

Xueming fired a few more shots and determined that the aerodynamics of the arrows had obvious flaws, but he was not discouraged.

"Thanks for your hard work."

Jamie felt very guilty: "I...I can only do this one step...How about you look at the second ammunition plan?"

The second ammunition plan is to replace the expensive propellant of liquid hydrogen with pyroxene fuel——

——This is the pyroxene engine system disclosed to the public by the Transportation Department. As we all know, the trains in the underground world burn stones. Especially the "blessing train" where the physical essence of Ao Mingde is located, their engines all eat stones.

White stone represents pure energy. There are also several train conductors with special skills and special soul power who can use their own spiritual bodies to drive the train. Their pyroxene consumption is extremely large, while other train engines mainly use the following fuels:

Two kinds.

One is the most common white crystal. The conductor and the stoker jointly use their spiritual bodies to stimulate the pyroxene engine, converting the natural spiritual energy in the white crystal into the mechanical energy of the engine. The energy utilization rate is about 60%.

There is also a lot of dust and smoke produced by the burning of white crystals. These dust crystals will fall along the railway along with the water vapor.

The other is Wood Plaque's pyroxene jewelry. The properties of the bomber's pyroxene are very similar to his spirit body. It is a chicken blood hibiscus stone. The energy density of this red stone is higher than that of white crystal. It burns

It is also faster than white crystal and more expensive.

Jamie took out the second gun, which was also a re-designed alien firearm after the CZ-75 had been heavily modified.

This launcher simplifies the structure of many traditional Browning recoilers, leaving many pressure relief holes for rockets. The whole thing looks like an L-shaped oval stick. In order to stuff the thick rocket magazine, its

The angle of the grip is very large, more like a flintlock gun from ancient times.

Due to the use of solid fuel, these pyroxene rockets require spiritual energy to activate. Jamie went to Galahad's online library to check the burning rate of bloodstone, and made a set of fuel ratios by himself, but the old man did not have a spiritual body.

, so the first shot has to be fired by a psychic.

When he got the gun, Xueming was still shouting half-jokingly: "It won't explode, right?"

"No, I made a special move. There is a part of the propelling chamber in the gun chamber." Jamie smiled: "It's absolutely safe. Traditional pistols also have hammer and needle reset structures. This launcher is not that complicated.

The most complicated part is the design of the rocket body. So my first consideration is the safety of the weapon."

Xueming holds the gun and prepares to fire——

——Wen Bucai had already hid in the tent.

Xueming asked: "Why are you hiding so far away?"

Wen Bucai: "I have filed a gun before, and I was afraid of it exploding!"

"Okay..." Xueming pulled the trigger.

This time, bright golden-red flames spurted out from the pressure relief hole, and the barrel almost exploded into a big fireball.

The energy density of chicken blood hibiscus stone is much higher than that of liquid hydrogen. As soon as the big flower exploded, Xueming felt a burst of hot air coming from his arm. He thought it was really exploded until the arrows flew so fast that he could see it.

He couldn't see it anymore. He saw the scorched black marks on the down jacket, which were made smelly by the flames from the firearm's pressure relief hole, and he came back to his senses.

Wen Bucai: "It's a bit fierce...what's the muzzle velocity?"

Xueming: "I can't feel it, I can't see clearly."

Wen Bucai: "What does the speedometer say?"

Two speed measuring instruments were placed at the muzzle of the gun and on the frozen lake a hundred meters away.

The arrow projectile uses hibiscus bloodstone as propellant, and its muzzle velocity is 270 meters per second. After flying more than 100 meters, it has an astonishing speed, which has exceeded four times the speed of sound.

But it's still the same old problem. It's the luck of the smoke from the ancestral grave that it can fly over the two swing arms of the speedometer. Xueming fired a few more rounds, and this time the hair was not visible. The arrow with the flaming tail

The bullets were like naughty elves. They started to perform Brownian motion when they were about fifty meters away from the muzzle. One of the bullets became a soaring cannon, flying about ten meters away from the muzzle and jumping into the sky.

Here comes the most outrageous thing——

——Jiang Xueming decided to lie down on the ice and launch, trying to figure out its horizontal trajectory.

The aerodynamic design of the flechette only made the wind-breaking surface, and it had no tail fin. Uncle Jamie spent all his turning skills, but he could only make some arcs and threads suitable for spin on the warhead warhead.

When shooting while lying low, when the arrow leaves the muzzle, its tail flame can almost light Xueming's hair.

But in the blink of an eye, a golden-red spark suddenly bloomed on the smooth ice. The arrow hit the cold ice, and then made a violent whistle. It was like a drill, rapidly

It spun around and dug a deep hole in the fifty-centimeter-thick ice layer. It took more than thirty seconds to drill before losing power.

When Xueming ran about twenty meters and found it in front of the pit, it was still spinning.

Xueming held the hot warhead and said, "Now the problem has been found."

"The rocket produces a sonic boom when it breaks through the speed of sound. There are many turbulences in the air, the wind caused by changes in cold and heat, or the dust particles, which will be affected by the huge sound waves. They are like water flow in the air, and the reaction of the water flow.

The force is transmitted to the projectile, interfering with its flight trajectory."
To be continued...