Into Unscientific

".emission!"

The moment he heard Master Qian's instructions.

Luo Shijun, who had straightened his body long ago, immediately pressed the launch button on the console as if it was a conditioned reflex.

Snapped!

With a crisp sound, the purple launch key was pressed heavily into the groove.

Luo Shijun's action seemed to simultaneously press the time-stop button in the command room. When the button sounded, everyone at the scene restrained their voices and stared at the console in front of them without moving.

Two seconds later.

A red light at the top of the console suddenly flashed slightly and turned dark green - this was an indicator signal that the launcher began to separate.

Different from the small launchers in Europe and the United States, the size of the rabbit launchers is much larger than the former.

In the later generations of Xu Yun's time travel, some intellectuals often used talk about technological gaps to deceive passers-by, as if the level of the rabbit launchers was thousands of miles away from those abroad.

This is actually a very outrageous rumor. There are actually two reasons why the rabbit launchers are extremely huge.

First, Rabbit's rockets were usually assembled on site before, so the launcher had an assembly function.

For example, they have large tower cranes on top and are built like movable assembly buildings, so that rockets can be assembled and debugged very conveniently.

Secondly, because some of Rabbit's launch sites are in desert areas and some in coastal areas, in order to protect the rocket from erosion by wind, sand and rain, the launcher also has its own protective cover.

During pre-assembly, the launcher will open a protective cover to protect the rocket, so the size of the launcher will appear large.

In addition, it is wrong to say that the launch pads across the sea are small. For example, the launch pads of Delta 4, Mars 5 and the Buran space shuttle are also very huge, because they also need to protect the rockets and spacecraft.

At present, the [Shangqing] project is said to be a ballistic missile, but there have always been various unclear relationships between the Dongfeng series missiles and the Long March rockets. Therefore, these launchers can basically be equivalent to the launch specifications of the Long March rockets.

Click click click.

Then, under the instruction of the radio signal, the tower motor in the launcher structure began to operate, slowly loosening the alloy QIA connector holding the missile body.

55 seconds later.

The only link between the missile and the launcher is a slider base, and the two are interconnected through fixing holes, which still appear to be very solid under this circumstance.

at the same time.

Reports of various parameters also began to sound in the command room:

"The density of the low-altitude atmosphere is normal! The unit is 1.284g·L-1!"

"Ground pressure conduction is normal!"

"The mass density is normal!"

"The crosswind is not greater than the threshold! The engine start signal has been received!"

Hear those last words.

Swish——

Almost everyone looked out the window subconsciously.

Students who were intercontinental missiles in their previous lives should all know this.

As a type of strategic nuclear weapon, intercontinental missiles must be able to enter the launch state at any time in terms of tactical significance.

Therefore, its launch conditions are relatively "solid".

Its core launch requirements are actually two. One is that the density of the low-pressure atmosphere cannot be too high, and the other is that the crosswind cannot be greater than the threshold.

These two requirements are actually low-altitude parameters. After all, missiles and rockets that launch satellites are not the same after all. The trajectory of the rocket is more close to a straight line (in fact, it is not that straight).

If a missile is to hit a ground target, its trajectory will naturally be an arc.

If the low-altitude parameters vary too much, it will easily affect the launch of the missile body, causing the missile launch to fail.

The intercontinental missiles of later generations of rabbits are already very mature in terms of materials and technical iterations. Even if you have 10,000 villains from novels gasping at the side, it will not have any impact.

But at this time, the Rabbits' missile research is just on the right track, and even Qian Wushi has some concerns about this aspect.

And inside the missile that is invisible to everyone.

With the transmission of the start signal, the missile also began to "wake up".

The official code name of this missile is Dongfeng 2. It is 21.4 meters long, completely white, and has a designed range of 7,777 kilometers.

At this moment.

The first stage engine to respond to the start signal was the first stage engine. After receiving the command, the fuel in the first stage engine began to burn crazily.

The propellant in the first-stage engine uses liquid hydrogen, which is the fuel that the Mao Bear people thought was not pure enough in China.

There are actually some coincidences in the use of liquid hydrogen as propellant. At that time, Pratt \u0026 Whitney began to develop an aero engine fueled by liquid hydrogen for the SR-71 Blackbird reconnaissance aircraft, which was the famous 304 Project.

But what I didn't expect was.

Two years after Pratt \u0026 Whitney started working on the engine, the J-58 turbojet engine came out, and the 304 project was shelved.

However, Pratt \u0026 Whitney accidentally mastered the storage and transportation method of liquid hydrogen during the project, and further developed a liquid hydrogen pump, which can pump liquid hydrogen like alcohol, kerosene and other hydrocarbon fuels.

Since then, the fuel has made its way onto the industrial stage.

The rabbits had to endure a lot of hardships in order to master this craft. You know, Xu Yun hadn't even appeared two years ago.

Now this fuel, which was once used by Bian Que Sanlian by fur bear experts, has become the first protagonist in the rabbits' first ballistic missile.

I don’t know what the furry bear experts who made the judgment back then would feel if they knew about this.

Swish swish swish.

Liquid hydrogen generates huge heat during the combustion process. The gas is sprayed backward from the trumpet-shaped nozzle that first converges and then diffuses. The thrust chamber instantly withstood the terrifying high temperature and pressure.

"."

Seeing the flames gradually appearing under the launcher, Wu Beisheng in the command room subconsciously pursed his mouth tightly, not even noticing that he had bitten the corner of his mouth.

See this situation.

Even though he was extremely nervous inside, Fifth Master Qian couldn't help but patted Wu Beisheng on the shoulder.

One of the core reasons why liquid hydrogen can become the first-stage propellant is that the unit energy it releases is very high, and the higher the unit energy, the higher the load-carrying capacity requirements for the combustion chamber.

[Shangqing] The team led by Wu Beisheng was responsible for the design of the combustion chamber in the project. They creatively designed a regenerative cooling structure with a through-cooling channel inside the side wall.

That is, before entering the combustion chamber, liquid hydrogen first flows through the cooling channel to cool the thrust chamber so that the chamber wall temperature does not exceed a certain value during engine operation.

It is a tapering and gradually widening complex contour structure with variable cross-sections, which greatly enhances the cooling performance and heat-bearing capacity of the thrust chamber.

This concept is somewhat similar to the small table on the train in later generations. You can put it away when not in use, and put it down to hold some items when needed.

But still the same sentence.

No matter how perfect the design is in theory, it will only be meaningful if it is verified by practical applications.

Although he could feel the comfort of Qian Wushi on his shoulders, Wu Beisheng still did not move his eyes away from the bottom of the missile.

One second two seconds.

When the time came to the fifth second, Wu Beisheng suddenly rushed to the window, pressed his hands tightly against the glass, and shouted:

"It's flying! Look! The missile is flying!"

In fact, Wu Beisheng didn't need to remind him. Many syllables with unclear meanings but very rapid and exciting sounds were synchronously sounded at the scene.

I only see this moment.

Dongfeng-2, which started on its own after Luo Shijun pressed the launch button, slowly floated from the ground to mid-air with the help of its tail flames.

Perhaps because the liquid hydrogen has not been completely released, Dongfeng-2's climb in the air is not fast, and it can even be said to be a bit difficult.

[Battle of wits and courage with the air] This sentence is usually used in later generations to describe the strange operations made by someone due to excessive thinking, but at this moment, Dongfeng 2 is indeed fighting for its life with the air.

The intense high temperature caused the launcher below to become a little charred. This is the most difficult or weakest stage for a missile.

Many near-earth parameters seem to have been agreed upon, and they must push Dongfeng 2 back to the ground. They will not allow anything to disobey the sky from this land.

but

The flames ejected from the tail of Dongfeng-2 have become more and more powerful. From a spark of a few tenths of a nanosecond, it has grown into a flame that is enough to melt steel.

Then

one meter,

Two meters,

three meters

Dongfeng No. 2 raised its head stubbornly and flew higher and faster under everyone's gaze.

The world seems to have noticed something, even the clouds in the sky have stopped at this moment, and the air is filled with a solemn and mysterious atmosphere.

Suddenly.

A low and long roar broke the silence, like the drums of ancient times, shaking everyone's hearts - this was the signal that the engine had reached the starting power.

Then, the next second.

boom! ! !

A ball of blazing flame suddenly erupted from the bottom of Dongfeng 2. The flame was so red and bright that it seemed to have gathered all the brilliance and power in the world.

It was seen that it broke through the shackles of the earth's gravity lightly. All the things that restricted it before, whether it was crosswind, atmospheric density or unit TE pressure, seemed to be weak and vulnerable at this moment.

Dongfeng No. 2 broke through the shackles, reached its highest level, and then flew away in the eyes of everyone!

"."

In the command room.

Wu Beisheng and others, who had been paying attention to the situation, only came back to their senses as if they were waking up from a dream until Dongfeng 2 turned into a small black dot and disappeared.

Everyone at the scene was silent for a moment, and then there was a cheer in the room that was comparable to that of Dongfeng 2 breaking the barrier:

"Okay! The missile is in the sky!!"

"Long live the motherland!!!"

Even the Fifth Master with a big heart like Qian could not help but wave his fist heavily at this time.

"Old money."

Just after Qian Wushi performed half a set of military style boxing, a voice that was not very confident suddenly came from beside him:

"Old Qian, did the missile really fly out?"

Qian Wushi took a look at the situation, and sure enough, the speaker was Liang Shoupan, who was not very stable.

Qian Wushi nodded heavily when he heard this:

"Yes, it flew out, and the flame tail is still hanging in the sky. Look, it looks like Fitzgerald across the sea."

Liang Shoupan was silent for several seconds, and then suddenly, with a quick hand speed that was not suitable for his age, he pulled out a few hairs from Qian Wushi's already sparse forehead.

"Fuck!"

Qian Wushi was startled by Liang Shoupan's actions. After regaining consciousness, his voice suddenly rose a bit:

"Liang, what are you doing?!"

Liang Shoupan stared at Qian Wushi's palm covering his head for a long time, and suddenly his whole body smiled as brightly as spring:

"It will hurt. It's really not a dream."

Master Qian:

"OvO?!"

The remaining hair that he regarded as a treasure suddenly lost a lot of stock. While Qian Wushi was distressed, he could barely understand Liang Shoupan's mentality - after all, this hair was even less than his own.

Then he took a deep breath, forced the matter behind him, and said to Liang Shoupan:

"Lao Liang, it is indeed worthy of celebration that Dongfeng 2 successfully ascended to heaven, but from a process perspective, this is just the first step in a long journey of thousands of miles."

"In addition to the boosting stage, missile launches also have a middle stage and a final stage. Only after these two processes are completed can the missile enter the threshold of the decisive battle."

"So we can clap our hands a few times, but holding a celebration banquet is still not allowed. In Xiao Xu's words, you can't poison yourself."

Liang Shoupan was slightly startled when he heard this, and quickly nodded.

As Qian Wushi said, there are three main launch stages for intercontinental missiles, namely the boost stage, the middle stage and the terminal stage.

The missile flies slowly during the boost phase, during which the missile's rocket is being fired to provide the thrust needed to propel the missile into low-Earth orbit.

ICBMs are most vulnerable during the boost phase, which typically lasts between one and five minutes, because they are fighting gravity and air resistance.

After the pig leg stage, it begins to free fall towards the target. This stage is called the middle stage, also known as the midway, and is the longest section of the missile's flight.

It can last up to 20 minutes without any external propulsion, with the missile relying on the momentum gained during the boost phase to reach the peak of its trajectory and then begin its descent.

This descent is gravity-assisted and requires few terminal course corrections.

At the end of the midway phase, the missile's warhead separates from the rocket and reenters the Earth's atmosphere, entering the terminal phase.

The terminal phase is characterized by extremely high speeds and ultimately the missile detonates on impact with the target site. During this phase, the missile is least vulnerable.

At this stage, the missile is propelled only by gravity and the momentum gained from previous stages. It does not require any external propulsion and is also the most difficult stage to intercept.

As far as the rabbits' current situation is concerned, the first stage is obviously more difficult, because the Zhuxian platform before the latter two stages has already simulated the waverider structure.

Counting Chen Pingsheng's initial test drive experiment, the three officially shot down U2s, and the fourth unlucky one shot down some time ago, the rabbits have already practiced three times.

Therefore, Qian Wushi's words may sound serious, but in fact, with the missile successfully taking off, the whole process has been completed more than half, and his words are more to protect his character.

as expected.

In the following time, Dongfeng-2 successfully entered the ballistic fixed point, and then started vector steering to the target.

South Pacific!