Chapter 467： Heilong Express (guarantee 1)

The atmospheric density of the ionosphere is very low, as can be seen from the satellites operating in the ionosphere.

Therefore, when flying in the ionosphere, air resistance is negligible.

Under continuous acceleration, Fang Yuan's speed reached Mach 5, which is 5 times the speed of sound and 6,120 kilometers per hour.

Eventually rushed into the stratosphere at a speed of Mach 5.

"Watch the temperature! Watch the temperature! Watch out for slowing down, 30 seconds, and 30 seconds to hit the ground!" Yang Yuping yelled into the intercom, his voice very anxious.

Since he could crystallize dark matter and make materials with strong interaction forces, Fang Yuan has deeply understood the properties of materials with strong interaction forces.

It was precisely because I knew the nature of the material with strong interaction forces that I decided to play this big.

It rushes into the atmosphere at 5 times the speed of sound, a speed that is comparable to that of the intercontinental missile Dongfeng Express.

If it is a missile, it rushes into the atmosphere at 5 times the speed of sound, and the heat generated by friction with the air will make the shell temperature reach one to two thousand degrees.

The outer layer of the missile will become red as a result, as if burning.

In the same way, meteors do not burn in outer space, but only when they enter the atmosphere.

The meteors that cross the sky that human eyes can see are all meteors that have entered the atmosphere.

Two thousand degrees high temperature.

Under normal circumstances, it is difficult for humans to withstand such high temperatures.

However, when Fang Yuan was wearing a black dragon armor and rushing into the atmosphere at a speed of Mach 5, the originally expected combustion situation did not appear.

If it is a missile, the outer shell has already burned into a fiery red color.

However, the Black Dragon Battle Armor still maintained the color of the Sombra Shield Armor, showing no signs of burning.

Fang Yuan was actually very nervous. He had been paying close attention to the fact that the temperature inside the battle armor had not risen significantly after it rushed into the stratosphere and finally determined that the material with strong interaction force was as strong as expected.

A material with strong interaction force is a layer of material formed by atoms being locked by a strong interaction force and arranged closely together.

This material naturally exists in the universe, that is, neutron stars, the most dense stars in the universe except for black holes.

The strength of materials with strong interaction forces is so terrifying.

Also because the atoms are tightly arranged, the particles hardly vibrate, which makes the material with strong interaction force a thermal insulator.

Because there is no particle vibration, theoretically, the temperature of the material with strong interaction force is absolute zero, and because it is a thermal insulator, it does not absorb heat by itself, so no heat transfer occurs when touched, so it does not feel cold.

It was precisely because he knew the special properties of materials with strong interaction forces beforehand that Fang Yuan dared to rush into the stratosphere at 5 times the speed of sound.

After entering the stratosphere, it passes through the ozone layer and continues to rush down to the troposphere, like a missile falling vertically, locking the target on the ground, and rushing straight down.

Hum!

After 20 seconds, it passed through the stratosphere and rushed into the troposphere, leaving only 15 kilometers from the ground.

"Slow down, slow down quickly." Yang Yuping kept reminding, but to no avail.

At a speed of Mach 5 and an altitude of 15 kilometers, it can be crossed in less than 10 seconds, and then it will directly hit the ground.

At this time, Admiral Rod also spoke: "Slow down, this is an order."

Fang Yuan didn't want to try to hit his head and break the blood flow, so after entering the troposphere, he started to slow down.

After 10 seconds, it fell to the ground at subsonic speed.

Bang!

With a bang, both feet landed, stomping the ground out of two pits.

After three seconds of silence on the scene, there was a burst of warm applause.

Bang bang ......

The first test of the Black Dragon Battlegear is over.

Fang Yuan returned to the clothing laboratory, took off the Black Dragon armor, and handed it to the laboratory for optimization and improvement.

"Do you have any comments on the suit? We will try our best to optimize it according to your wishes." The scientific research personnel of the suit laboratory asked while checking the condition of the suit.

"I think the shape can be more domineering, and, has the name'Black Dragon' been decided? It doesn't match my handsome shape. I think the white dragon in the waves is actually ok." Fang Yuan rubs Rubbed his chin and said.

Admiral Rod heard from the side, he couldn't help rolling his eyes at a young age, and said, "This is because you are too young to look like you are very powerful, so you use the code name'Black Dragon'. It will appear calmer and cover up the shortcomings of your appearance."

"My appearance has become a shortcoming? Don't they all say that the appearance is the combat effectiveness?" Fang Yuan said speechless.

...

After testing the Black Dragon Armor, Fang Yuan found that the clothing design team of the Academy of Military Sciences was still very strong.

I originally thought that the Black Dragon Battle Armor produced would be similar to the Longwei-class battle suit.

But after the test, it was discovered that the Black Dragon armor was much stronger than the Longwei-class uniform.

In fact, you will understand after careful thinking.

The Longwei-class suit is a mass-produced suit. The pursuit is to reduce the cost as much as possible while ensuring a certain combat effectiveness.

In other words, Longwei-class suits have high requirements for cost performance.

The Black Dragon Battle Armor is different. If there is no special situation, only one set will be built, so it is no problem to smash several billions in.

A lightning vortex ring propulsion engine cost 3 billion, which was made without the electron beam generator.

After the first test of the Black Dragon Battlegear was over, two days of optimization and adjustment were carried out. Fang Yuan was notified that he would start the second test of the Black Dragon Battlegear.

There are super-powered engineers responsible for making battle suits. The optimization and adjustment are indeed fast, and the process is almost purely manual.

The second test was conducted in the test field of the Academy of Military Sciences. Although it was an open test field, this time it was a ground test.

"This optimization process went smoothly. After loading the strong interaction material, the weight of the black dragon armor is 280 kg. Adding your weight, the total weight reaches 350 kg. This weight is much heavier than a normal suit. Today we need to test the movement of the ground to see if it will hinder the action." Professor Yang Yuping probably talked about the test content today.

"350 kilograms? In this case, wouldn't the kinetic energy of the dragon fist skyrocket five times?" Fang Yuan was satisfied with the weight.

According to the kinetic energy formula Ek=(mv^2)/2, the mass is directly proportional to the kinetic energy, and the kinetic energy increases as many times as the mass increases.

"The premise is that you are carrying such a heavy armor, and your speed has not decreased." Yang Yuping corrected.

According to the kinetic energy formula, if the speed decreases, the kinetic energy will naturally decrease.

The heavier the armor is, the speed will naturally decrease.

Therefore, whether the final kinetic energy increases or decreases depends on the test results.

The ground speed is different from the sky speed tested a few days ago.

The reason it was able to reach 5 times the speed of sound last time was because it started to accelerate outside the atmosphere. Outside the atmosphere, there is no air resistance, so it can accelerate to Mach 5.

In theory, flying in space can continue to accelerate to the speed of light as long as the acceleration is maintained.

However, it is different on the ground. With the presence of air resistance, the speed will have a limit.

During the battle, there is no time to go to outer space to complete the acceleration process.

Therefore, the ground speed data is more important.