In the remote Pacific waters.

Deep in the ocean, there is a huge meteorite with an uneven surface and a faint light.

A deep-sea animal swam past the meteorite, and the water rippled on the huge meteorite.

Bah!

A bubble suddenly appeared on the surface of the meteorite.

Immediately afterwards, this huge meteorite continued to emit heat, and more and more bubbles emerged.

Half an hour later.

Gulu gulu——

In this small area of ​​​​the sea, bubbles are constantly popping up.

Even the sea water nearby became hot and more water vapor was churning up.

The bubbling area is getting bigger and bigger, expanding at a speed visible to the naked eye.

Water vapor evaporates, forming a sea fog.

The sea fog was hazy, and nothing could be seen in the thick fog.

As time goes by, the area covered by sea fog becomes larger and larger.

...

Oil City.

After running around for three days, Li Yu, Lao Luo and others finally arrived here.

Third Uncle and the others returned to Oil City as early as yesterday.

They left two helicopters in the Northern Federation and brought the rest back.

Excluding the two in the Northern Federation and the two in the Da Zhangshu Base, there are a total of eleven helicopters in Oil City.

When Third Uncle and the others returned, Marcelloin, Sister Lan and others were stunned.

They never knew how many helicopters there were at Da Zhangshu Base. In the past, they had only seen six or seven helicopters at most, but this time, there were more than a dozen helicopters parked on the tarmac of Oil City, which shocked them.

meeting room.

Li Yu took off his hat and walked in.

"Third uncle."

The third uncle was sitting in front of the military radio at this time. After seeing Li Yu come in, he nodded.

Li Yu picked up the cup and walked to the hot water bottle on the side to pour a cup of hot water.

Huhu——

The steam from the cup was blown away by Li Yu.

Gudonggudong!

Li Yu drank two sips of hot water and his body felt much warmer.

It is said that it is not cold when it snows, but it is coldest when the snow melts. This saying is not unreasonable.

The snow is obviously melting, but the body temperature is even lower.

"Okay, okay, are He Bing and the others so fast? Okay, let's fly over first and try."

"Well, I will talk to Xiaoyu about this later. He has just arrived in Oil City."

"Okay, that's it."

The third uncle put down the military radio headset, then stood up and walked towards Li Yu.

Li Yu's hearing is very sensitive. He just heard his third uncle mentioning him, so he raised his head and looked at his third uncle.

The third uncle came over and said to Li Yu:

"Xiaoyu, let me tell you some good news. When Cannon left Da Zhangshu Base last time, he mentioned a suggestion to your second uncle to extend the helicopter's cruising range. You should know that, right?"

Li Yu thought for a while and said: "There is such a thing. Both Cannon and Second Uncle told me about this matter. What's wrong? Is it possible that it can be done? Logically speaking, helicopters are much more difficult to modify than vehicles.

."

The third uncle smiled and said: "Yes, it has been modified."

"Do you still remember those named Ding Zhao and Qin Feng? They studied aircraft maintenance as undergraduates, aviation science and technology as graduate students, and Xue Zhihua and the others studied mechanical engineering."

"They have cooperated with He Bing and several others, and have been working day and night for the past three days. They have installed an internal auxiliary fuel tank on a helicopter in the base. After actual flight testing, it is feasible!"

When the third uncle spoke, his face was filled with joy.

After hearing this, Li Yu thought about it carefully and remembered the group of top students from the southwest, including Ding Zhao and Qin Feng. Both of them were plain-looking and didn't seem to talk much. Unexpectedly, they were quite capable.

capable.

So he asked: "Is there any problem? The modification has been completed in such a short time. Also, after the modification, what is the cruising range?"

The third uncle shook his head and said:

"Anyway, your second uncle said that he thinks the flight test results are pretty good, but the specific test still needs to wait for someone from the base to drive over. The cruising range is up to 1,500 kilometers.

It can be expanded if necessary, but some internal space will be lost.”

Li Yu stood up from the chair and after thinking for a long time, he said:

"In that case, let someone fly a helicopter to Oil City tomorrow to test it and see if there are any problems."

"If there are no problems, four more helicopters will be modified by then, and the cruising range will be as high as 2,000 kilometers."

When the third uncle heard the modification number mentioned by Li Yu, he hesitated and said, "Xiaoyu, I think more helicopters can be modified."

"Currently we use helicopters, and the most common use is to go back and forth from Oil City to Da Zhangshu Base. If we go back and forth with the current helicopters, we have to refuel halfway."

"Except for the several patrol helicopters fixed at Da Zhangshu Base and Oil City, I recommend that all other helicopters be modified."

"In order not to reduce too much space in the helicopter cabin, it can be modified to have a cruising range of about 1,200 kilometers. In this case, our helicopter can reach three places directly without stopping for refueling."

"What do you think?"

Li Yu was silent for a while. He was still a little worried that the modified helicopter would affect the stability of the fuselage.

But what the third uncle said does make sense.

So he replied: "Let's wait for my second uncle to send someone to fly the helicopter over and test the long-distance stability first. If there is no problem after the test, then we will modify it in batches."

The third uncle nodded and said: "Okay."

This is a great good thing.

All their current helicopters have a cruising range of more than 900 kilometers.

But whether it is from Oil City to the Northern Federation, or from Oil City to Da Zhangshu Base, the distance is about one thousand kilometers.

Although it's just a little bit short, it's just that little bit that makes the helicopter have to stop for refueling on the road.

Moreover, it is impossible for a helicopter to run out of fuel and then think about stopping to refuel, so it usually finds a suitable location halfway along the way to refuel.

If the cruising range of most helicopters is increased to 1,200 kilometers, it means that they only need to occupy a small part of the space in the cabin to travel between three places without stopping.

Because it only takes up a little space in the cabin, it will not affect the helicopter's transportation.

In today's apocalypse, the journey that originally took seven or eight hours before the apocalypse may now take three or four days, or even longer.

If it is a low-floor car, it will be even more difficult to move.

Natural disasters in recent years have caused huge changes in the road surface.

In summer it is covered with weeds, in winter it is covered with falling rocks, ice and snow, and the ground is pitted and undulating.

Unless you need to transport a large amount of materials, you need to transport them by land.

Otherwise, helicopter air transportation is currently more convenient.

And the speed and efficiency are higher.

The two discussed for a while about preparing to build a trading market.

On the northern federal side, when the third uncle left, he had already discussed it with Yuan Zhi. When the weather got warmer, Yuan Zhi would send the first batch of construction teams over.

The weather is still a bit cold now, so outdoor construction is extremely inconvenient and results in half the effort.

"Third Uncle, things here are almost settled. You can take Lao Bi and the others back to the Da Zhangshu Base first." Li Yu said to Third Uncle.

The third uncle heard this and replied: "Well... okay, just wait for two more days. Didn't you just say that your second uncle would send someone to test the modified helicopter and fly over tomorrow? I'll wait for that helicopter to fly over."

Then I took most of the helicopters back to the headquarters for modification."

Li Yu nodded and said, "Okay, let's arrange it this way."

Seeing that the conversation was almost over, Li Yu drank all the water in the cup and said to his third uncle: "Third uncle, I'm going to go up and have a rest first."

"become."

Li Yu had been riding in a car for the past few days, and even though he was riding in an armored transport vehicle with excellent off-road performance, he still felt a little uncomfortable.
To be continued...