Wei Ming immediately adopted this plan.

It's just that the ring pipe has extremely high requirements for materials, and ordinary materials will only be broken down instantly.

Even ultra-titanium alloy is difficult to resist, and after a few shots, it will be severely worn out and quickly scrapped.

Even the tens of thousands of degrees of heat generated by friction can melt many materials.

Cao Jun slightly adjusted his plan, that is, in the straight incident section of the ρ pipeline, a 10-kilometer long straight pipeline, filled with water and rushed out at a certain flow rate, like a high-pressure water pipe, using the 10-kilometer water flow to weaken more than half of the kinetic energy of the water droplet crystal.

The rest is left to the ring wind tunnel pipeline.

So it took half a month for Wei Ming to build the pipeline.

It is 110 kilometers long, with a diameter of 80 centimeters, a wall thickness of 50 centimeters, and a seamless pipe made of high-temperature resistant ultra-tungsten alloy material, which can be directly used as a cannon barrel to fire five times the speed of sound at a rate of one round per second, and will not be scrapped if it is fired at a rate of 100,000 rounds.

But it's still not enough.

Wei Ming also covered the main friction area of the wind tunnel pipeline with a thin layer of waterdrop crystal material - Wei Ming collected a circle, at the cost of scrapping the 'Water Droplet-1' spacecraft, and only then did he collect barely enough waterdrop crystal material.

Because except for the water drop crystal itself, no material can withstand such violent friction.

Finally, the installation of pipes and equipment took up to a week, and the location was still set at the Qiandao Reservoir.

Because considering the need for heat dissipation, ρ pipes must be soaked in a cold water environment to enjoy sufficient cooling, otherwise after a while, the temperature of the wind tunnel pipes will rise to more than 5,000 degrees, close to the temperature of the sun's surface, and even the rock can melt, how can it be done without a cooling environment?

……

March 10th.

Kuril Reservoir.

The subsonic blower is in place and ready to work.

Wei Ming entered the underground space dug out of a hill on the shore.

There was a raw coal feed conveyor belt in front of him.

Ahead is a 30-centimeter-long (smaller) pipeline, 300 meters long, which is almost like a vacuum environment, and the air is constantly and rapidly pumped away, and beyond that is a 10-kilometer-long high-pressure water pipe.

The vacuum environment device is no longer needed, because the air is pumped out of 99.9% of the underground space where Weiming is located, and a working environment similar to vacuum has also been formed.

Wei Ming had to put on a bulky sealing suit, drag a tail-like gas pipe, and enter the underground space to work.

There is no other reason than safety.

If you don't do a good job of protection, the water droplet crystals with a speed of tens of thousands of kilometers per second will hit the water flow directly, and the splash may kill Wei Ming.

The loud sound of a sonic boom caused by friction with the air can instantly deaf the ears.

The working environment is also pumped into a vacuum to reduce the destructive power of noise.

Of course, due to the lack of absolute sealing, a small amount of air molecules will remain in the working environment, but in the high-speed rotation environment, substances with different densities will be significantly stratified, but only carbon will be polymerized, compressed, and finally synthesized into water drop crystals.

Other elements may also be able to craft new crystals, but they have not yet been discovered.

The little black in his body has been released in advance.

Started to create a gravitational vortex, absorbing coal, and constantly accelerating.

Wei Ming was highly focused and cautiously operated.

Pay attention to the latest type of water drop crystal, how far can it grow.

If it's too big than he thinks, he'd rather reduce the synthesis efficiency than shoot it out early.

Soybeans are big.

Fava beans are big.

The glass beads are large.

Winter dates are large.

Close to table tennis ...... Enough is enough, this size is completely large enough, how can there be a slight tendency to increase.

Launch!

Before it reached its 'ripe' state, Wei Ming launched it like a hot potato.

Rumble~!

A loud bang was heard.

Slight but noticeable vibrations can be felt underfoot.

Wei Ming didn't rush to launch the second one, but after a while, he asked through the headphones: "How is it, can the pipeline withstand it?" ”

"Yes."

The other end of the headset said, "Within the tolerance range, you can continue." ”

"Okay, I'm going to increase the frequency."

Wei Ming nodded and immediately sped up the operation.

Boom Boom!

One every ten seconds.

One every five seconds.

Every three seconds...... Efficiency is at its maximum, as firing 'immature' droplet crystals early will delay the time of about two seconds.

But this frequency is already quite fast, and experts suggest that it is enough to maintain this efficiency, and no matter how fast the pipeline is, it may not be able to withstand it.

In this state, it continues to be synthesized for up to five hours.

The recovery team said that it had successfully collected 5,978 steaming Type 5 droplet crystals that had just been baked.

The diameter is 38 mm.

The average mass of each piece is as high as 11,687.4 grams.

Multiply by the number of close to six thousand.

The total weight is more than seventy tons.

Wei Ming began to feel that this efficiency was too slow!

And there's always a feeling of not being able to enjoy it.

Because the water droplet crystal in the 'mature' state, after accelerating to the maximum state, as long as it reaches a critical point, and then push it out with a little force, it seems to be a matter of course, and it is easy to launch out, simple and efficient.

It's not like this, constantly 'stepping on the brakes' and always paying attention to the size can suffocate people from internal injuries.

"Forget it, the frequency remains three seconds a piece, but the size is not controlled, see how big the mature state is."

A few seconds later.

Mature type 5 droplet crystals appeared.

An ellipsoid with a diameter of about 45 mm.

Slightly larger than a table tennis ball.

Slightly smaller than eggs.

Then, with some trepidation, he shot the droplet crystal into the pipe.

Rumble!

Wei Ming heard a loud bang.

There was a violent vibration under his feet.

"Expert Liang, is the pipeline still delicious?" Wei Ming hurriedly asked the person in charge.

"I'm in a state of tinnitus here, and I can't hear it for the time being!"

"I increased the volume of the droplet crystals, did the wind tunnel pipe collapse?" Wei Ming asked in a loud voice.

"It can't be increased any more, it has obviously exceeded the upper limit of bearing, and if it goes on like this, the pipeline will collapse." The other party said with some horror.

"It's okay if it doesn't crash, I don't care, it's okay to have a frequency of three seconds, but the volume should be kept at the maximum...... I'm going to continue. ”

"Don't!"

But Wei Ming ignored it, since the first one was completely carried over, it should be able to eat it later.

Rumble!

Rumble!

Rumble!!

Until two hours later.

BOOM with a bang.

"Stop now! The ring pipe has collapsed and has completely fallen apart and damaged, please stop the launch immediately! Expert Liang exclaimed.

Wei Ming had to stop the synthesis and let Xiao Hei devour the few that were growing.

"Mr. Wei, come out and take a look, the water of the entire Qiandao Reservoir has been heated to 34 degrees, and many fish are almost cooked."

"How is this possible?"

Wei Ming looked incredulous, immediately left the workspace, took off his protective clothing, and came to the lake to take a look.

I saw that the surface of the Qiandao Reservoir Lake, which is thousands of square kilometers, is like a natural hot spring at this moment, filled with a white mist that covers the sky and the sun.

I put my hand in the lake water and felt it, and it really looked like it was thirty-four or five degrees, and I could see that the thick fog was rolling at the place where the pipe was placed, and there was the sound of gurgling water boiling.

"This ......"

He was also stunned in surprise.