Lu Yu got off the plane and retreated with all the leaders.

Song Kaifei began to control the helicopter to take off.

Although the transport aircraft is huge, it is like a flexible bird at this time, without any clumsiness.

"So fast!" A staff officer exclaimed and widened his eyes: "This is much faster than the previous takeoff speed!"

"Haha, you have good eyesight!"

Lu Yu smiled slightly: "This is the effect brought by the modified lightweight engine. The kinetic energy output is larger, so it will naturally be much faster."

Boom boom!

Just as the two of them were talking, the transport plane had already climbed to a high altitude.

Everyone looked up and saw that the helicopter was getting smaller and smaller in their field of view, like an eagle soaring in the air, slipping down and drilling into the clouds.

"It has risen to a height of 7,000 meters!"

The factory manager looked at the data from the instruments next to him and said in shock: "The helicopter with the best performance in the world can only reach 6,500 meters in the limit! We have exceeded the limit and can continue to break through, almost 8,000 meters!"

Upon hearing this, everyone's faces showed a look of surprise.

It's incredible!

It is already amazing that helicopters can fly to such a high altitude.

Although most helicopters do not need to fly so high.

But this also represents the maturity and breakthrough of technology!

"Enough! Enough!"

Zhang Jinzhong said excitedly: "Let the plane come down quickly. If you fly again, something will happen."

The air at high altitude is thin, and there is a limit for helicopters that rely solely on propellers.

If you keep surpassing the limit and breaking through this limit, you will be very likely to have accidents!

Lu Yu immediately gave an order with the walkie-talkie. Soon, the helicopter landed in the clouds and appeared in everyone's sight.

When everyone saw the helicopter, they were shocked.

Because the helicopter does not slowly descend, but hits the ground rapidly at a vertical angle.

This shocked everyone.

The staff officer exclaimed: "This...what is going on? Has the helicopter lost control?"

Zhang Jinzhong asked anxiously: "What's the situation? Did the plane crash?!"

No one answered, and everyone's faces looked good.

The situation in front of us is obviously a failure in the helicopter power system!

The factory director [Tianlai Novel www.23txt.xyz] had a pale face and his eyes were filled with despair.

This helicopter took a lot of effort to modify it and devoted the efforts of the military factory owners.

Once something happens, their efforts will be in vain?

Now, everyone feels as sad as if they see something happening to their children.

"Why is this happening? Why is this happening! What exactly happened?!"

The factory manager was about to go crazy and shouted anxiously.

Lu Yu seemed very calm and smiled and said, "Don't worry, everyone! Isn't this something wrong yet? Just look at it."

Everyone stared at him with strange faces.

The planes are clearly doing free falls, are you blind? This is still called... nothing happened?!

When it really hits the person and dies, everything will be too late.

The guards beside Zhang Jinzhong hurriedly held him and hid in a safe place.

If such a large plane crashes down, everyone present will be affected.

At this moment, everyone was in a panic and retreating.

Only Lu Yu, as if nothing had happened, was still standing there watching the helicopter crash.

When the helicopter fell about fifty meters above the ground, the originally stagnant propeller rumbled and turned again.

The engine outputs a huge amount of kinetic energy, and a violent airflow pounces on the ground.

The people who were evacuating urgently were swaying like wheat in the rice fields, blowing around in the wind.

When the helicopter descended to only ten meters above the ground, it was stabilized again and then flew back.

Song Kaifei took advantage of the situation to control the helicopter to fly around the playground, flew past everyone's heads, and made a proud gesture.

Lu Yu then turned around, looked at Zhang Jinzhong and others with a shocked face, and smiled and said, "I'm sorry, I performed a stunt for all the leaders. There is no other meaning, just let you see how good the performance of this engine is!"

Zhang Jinzhong and others still haven't come back to their senses, and they feel like they are dreaming.

Does anyone want to play with helicopters as fighters?

After a while, the factory manager breathed a lot of relief and smiled again on his face: "It turned out to be a false alarm! You performed special stunts, why didn't you say hello in advance? Didn't scare me to death..."

As he said that, he patted his chest with lingering fear.

Zhang Jinzhong smiled bitterly, wiped the sweat from his forehead and stared at Lu Yu: "You guy, you're such a fool! Don't keep it in front of me next time. I'll scare you if I don't have a heart attack!"

The Chief of Staff was not hesitant and said angrily: "It turns out that we were all worried about it just now. You kid don't think it's too big to watch the show!"

"I was going to give you a surprise. If you explain it thoroughly in advance, do you still have a sense of expectation?"

Lu Yu smiled and asked, "How is this? This plane is remodeled well! It uses special new materials, not limited by any environment or terrain. Even if you go to sea, you will fly as freely as on land. Even if you encounter Lao Mi's Osprey helicopter, you will not be at all disadvantages."

"Okay! OK!"

Zhang Jinzhong exclaimed loudly: "The transformation is very good. You kid, you have never disappointed me."

After saying that, he immediately called the factory manager to his side and ordered that the entire transformation plan be remembered.

When these twenty aircraft are renovated, the entire army's helicopters will be upgraded as a whole.

Zhang Jinzhong knew that the cost of this transformation was actually very small, and only required the material and labor costs, but the results of the improvement were quite large.

It's totally equivalent to changing into a brand new helicopter!

It's simply cost-effective.

He continued to inspect the people and then Zhang Jinzhong and others left for the Air Force.

The military factory continues to work overtime to improve, and Lu Yu also supervises the work himself, and every helicopter needs detailed guidance and acceptance.

Although we have passed on the technology, we still lack experience after all.

Moreover, this complex engineering technology cannot be turned into a master by looking at one or two engine modifications.

If there is a problem in any link, if a screw is incorrectly positioned, it may cause engine failure and death.

Lu Yu dared not be negligent or slack in this regard!

You must firmly control it yourself. Each modified helicopter must undergo his repeated inspection to be considered qualified.

In this way, half a month passed in a hurry as everyone was busy day and night.

Lu Yu finally successfully modified twenty helicopters before the exercise.

Among them, fifteen were delivered directly to use, and the other five were used as backup.

After the completion of the last day, Lu Yuming took the students back safely.
Chapter completed!