HacKer

Shuangqing University, No. 1 Doctor's Dormitory Building, 501 Dormitory.

Shi Lei is very satisfied with the noise control of Yinglong. In order to test the control flexibility of the Shadow Dragon, Shi Lei directly used the narrow environment of the 501 dormitory to test in Shi Lei.

Controlling the U-shaped joystick, the Shadow Dragon moves flexibly in the small bedroom space. The handling performance is very good, especially the problem of changing direction.

Due to the bottom of the cabin of the Shadow Dragon, three cameras were used to monitor the scene in real time, and the Shadow Dragon was a four-spiral symmetrical design.

When you change direction, you don't have to turn at all, you can go straight, or go back directly, or in any other direction. This is an obvious advantage over the steel number.

Good handling performance, let Shadow Dragon move freely in a small space, no restrictions at all.

Slowly landing the Shadow Dragon, Shi Lei nodded with satisfaction, Shadow Dragon has two advantages. Whether it's flexible handling or noise control, it's perfect for complex urban environments.

Especially the flexible operation performance, in the urban environment, will make the Shadow Dragon more than enough.

"Little Li Zi, how is the defense of Shadow Dragon?" Shi Lei asked with a worry.

Whether it looks like a thin blade, it's still a live-action capture camera that's bare outside. It's not like something high-defensive.

Lee guessed the next words and confirmed this!

"Stone brother, Shadow Dragon's defense, there is no way to compare with the steel! After all, the steel number uses special aviation metal, and the shadow dragon is only made of aluminum alloy. Whether it is a pistol, a miniature submachine gun, or even a parabolic paradise, It may cause fatal damage to Shadow Dragon." Li guessed a little embarrassed.

However, Li guessed Lima and continued to say: "The stone brother, although the defense of the shadow dragon is not good, but its cost is far lower than the steel number! Shadow dragon without the weapon module, the cost is only a little more than 10,000 yuan! Most of the cost is concentrated on on-board computers, high-efficiency lithium batteries, as well as ranging radars and cameras. These components can be recycled."

Shi Lei nodded helplessly, after all, the cost is only one tenth, and this answer Shi Lei is not unexpected. Because how to look at the shadow dragon, how not like a high defense body.

The positioning of Shadow Dragon is more about performing tasks in the urban environment, security issues in the city, and most criminals do not have firearms. Therefore, it cannot cause harm to Shadow Dragon!

In the small CNC machining center, the barrel of the electromagnetic gun was finally processed. Li guessed the door of the small CNC machining center, took the gun barrel down on the tooling, and smiled with a strange face. The Capricorn was about ten centimeters away. Silver-white metal tube.

Shi Lei’s heart was a bit cold, and Xiao Li’s movement was too cumbersome.

"Little plum, you guys pay attention to the image!" Shi Lei could not help but reminded.

Li guessed a smile. "Stone brother, don't underestimate this barrel. Although it is only 10cm in length, it costs two thousand yuan!"

"So expensive?" Shi Lei looked at the short tube that looked ugly, and did not understand why its price was so expensive.

Li guess explained: "Stone brother, this is a special kind of metal, which can better adapt to the electromagnetic effect and let the projectile reach a higher initial speed! The special diamond bit that only processes it, it also cost 20,000 yuan! Although a bit expensive, the effect should be very good!"

"Try it?" Shi Lei said with some expectation.

"I will assemble it first!" Li guessed with a 10cm electromagnetic gun barrel, came to the workbench, and the barrel was locked into the mechanical device.

That mechanical device is the core device accelerator and switch part of the electromagnetic gun. The electromagnetic gun has three main parts, the energy device, the accelerator and the switch.

Energy is provided by Shadow Dragon, and Li guesses that the accelerator and switch are designed in the same part. The switch part must also be connected to the Shadow Dragon and handed over to the Shadow Dragon Automation Control.

After the barrel was installed, Li guessed out a bag of steel **** and loaded the supply system of the electromagnetic gun. Li guessed the miniature electromagnetic gun, the shell used is a 5 gram weight solid steel ball.

Li guessed the installation and introduced the basic parameters of the miniature electromagnetic gun to Shi Lei. "Stone brother, with the energy situation of Shadow Dragon, can only support up to 50 shots at a time. And each time you fire, it takes about 1 minute of power to drain."

Shi Lei’s eyebrows are huddled together, and it takes a minute to stagnate. It’s really a luxury electromagnetic gun!

"How powerful is it?"

Li guessed on the workbench, found a draft paper and handed it to Shi Lei: "The calculated data shows that the power is quite impressive. The solid steel ball of 5 grams weight has an initial speed of 800 meters!"

Shi Lei is not very clear about the meaning of these data, directly said: "Little plum, you give me the distance, the power of the miniature electromagnetic gun, to what extent!"

The so-called industry has a specialization, Shi Lei is a super cattle in the computer industry, but in the machinery industry, it has become a rookie.

Although Li guessed that he did not understand computer knowledge, he did not understand Shi Lei.

"Stone brother, according to the calculation formula of kinetic energy, E = 1/2MV2, that is, the kinetic energy is equal to the mass multiplied by half the square of the speed. The speed of the micro-electromagnetic gun is 800 m / s, the weight of the solid projectile is 0.005 kg, the kinetic energy is 1600 joules. This is a very great number!" After Li Jian explained it, he found that Shi Lei was still in a state of confusion, apparently white explanation!

Shi Lei coughed: "Directly, it is about the power of something!"

Li guessed for a moment, just to illustrate: "Stone brother, do you know the M4 carbine?"

In the past, the M4 carbine was Shi Lei's favorite. Whether it was shooting speed, accuracy, or range, it was excellent.

"Well, I know!" Shi Lei nodded and said: "Is it similar to the M4 carbine?"

Li guessed nod. "Yes! The M4 carbine has a muzzle velocity of 880M/sec, a muzzle kinetic energy of 1,645 joules, and a bullet weight of slightly less than 5 grams. Our miniature electromagnetic gun is almost the same in terms of kinetic energy as the carbine. It’s just like the power!”

Shi Lei listened to Li Qiu's commentary before he understood his previous mistakes about the power of the electromagnetic gun. The original power could not only look at the speed, but also the quality of the projectile and the kinetic energy that eventually combined.

Kinetic energy is energy!

The higher the energy, the greater the destructive power and the higher the power!

There is another example to illustrate the power of the miniature electromagnetic gun, that is, the famous Black Star May 4 pistol, with a muzzle kinetic energy of only 480 joules.

After almost understanding the power of the miniature electromagnetic gun, Shi Lei finally showed a smile. However, Shi Lei raised another doubt. Although he did not understand physics and did not understand the knowledge of energy conversion, Shi Lei still knew that one kilowatt-hour of electricity, that is, one kilowatt hour, equals many, many joules.

Why does it take a minute of battery life for a laser gun?

Shi Lei asked his doubts. Li guessed out the detailed parameter drawings and explained it to Shi Lei.

According to the energy conversion, one kilowatt hour, that is, one degree of electricity is equal to 3.6 million joules.

Shadow Dragon uses a distributed battery energy supply. A total of five batteries are installed, which are the four bezels of the propeller and the main battery compartment of the cabin. The total capacity of the five electromagnetic units reached 2.2 kWh.

Four propellers, each with a power of 300W, add up to 1.2kW for four propellers and consume 1.2 degrees of electricity per hour.

Shadow Dragon also has a computer, a rangefinder radar, and a surveillance camera. These also require a lot of power, which adds up to 500W, which is 0.5 hours of electricity per hour.

Shadow Dragon consumes a total of 1.7 kWh of electricity per hour, leaving 0.5 kWh of total power, which can support more than ten minutes of flight time.

The maximum range of 80 minutes is still quite ideal!

A single electromagnetic gun has only 1600 joules of energy. For a shadow dragon with nearly 8 million joules of energy, why do you need to reduce it by one minute?

Calculated by dividing the total energy by the total time, approximately 8 million joules of energy, divided by approximately 80 minutes of voyage time, consumes approximately 100,000 joules per minute.

100,000 joules and 1600 joules, is the gap too big?

In fact, due to process limitations, material limitations, and the structural limitations of miniaturized electromagnetic guns, the efficiency of Lorentz force and electromagnetic effect conversion energy is very low!

It’s not surprising that the conversion rate of just 1.6!

After listening to Li's explanation, Shi Lei coughed and asked: "Little plum, one sentence, the micro-electromagnetic gun in the future, there is still a lot of room for improvement?"

"Well! It can be said! With the improvement of our technology and craftsmanship, better material input, and a more advanced framework. Our electromagnetic guns will eventually become more and more powerful!" Full of openings.

Shi Lei clap the clap: "I will be relieved! Xiao Lizi, first put this electromagnetic gun on it, I have to experiment and test it to see how powerful it is!"

The process of installing the electromagnetic gun is very fast, whether it is an electromagnetic gun or an MP7 micro submachine gun, all adopt a modular design.

As long as it is standard modular, only the corresponding loading is required, and it can be completed in a few minutes!

After Li Qi spent seven or eight minutes, he installed the electromagnetic gun and Shadow Dragon together, and checked it again. After confirming that there was no problem, he opened the stone to Shi Lei: "Stone brother, no problem!"

Shi Lei looked at the power information fed back by the ECH system, and there was 76 power, which can last for more than 50 minutes.

With the launch of Shadow Dragon, Shi Lei controlled the Shadow Dragon to fly out of the living room and fly to the outside world.

Li guessed nervously: "The stone brother, the power of the electromagnetic gun is very big, what are you going to take to test its power?".

(To be continued. Please search for astronomical literature, the novel is better and faster!)