Into the hill continued to climb.

9,000 ......

10,000 meters......

11,000 kilometers......

Well, there's no need to doubt it now.

If it is said to be 10,000 meters in the air, it is 10,000 meters in the air.

Almost effortlessly, the helicopter has exceeded 10,000 meters in altitude.

It just so happened that another civil airliner passed by, which once again triggered a surprise report.

The tone of the report of the pilot of the civil airliner was obviously a little excited, a little incoherent, as if he had discovered another alien fighter jet.

A small civilian helicopter actually flew to an altitude of 11,000 meters, and others should not be surprised?

The pilot of the civil airliner also checked his altitude several times, and thought that he had made a mistake.

I thought it was a civil airliner that fell a few kilometers for no reason.

"No wonder ......"

"Such a strong motivation ......"

Inside the ground control tower, everyone was applauding.

Driven by more than 10,000 shaft horsepower, it is not a problem to exceed 10,000 meters in the air!

A new world record was born silently.

In fact, the Bell 407 can fly higher.

It is completely subject to the design of the Bell-407 itself, and it will only be 10,000 meters.

The lift of the helicopter is not just a matter of the engine.

There is also the design outline of the entire fuselage.

There is also the rotor area and so on.

Among them, the rotor area is a very important data.

Why is the lifting capacity of the Mi-26 so strong? Because its rotor area has reached an astonishing 800 square meters!

But what about the Bell 407? The entire rotor disc area is only about 90 square meters.

In addition, the wing loads of the two are also different.

The rotor blades of the Mi-26 super-heavy helicopter are large, thick and very strong.

According to publicly available information, it is capable of carrying a weight of about 70 kilograms per square meter.

And the Bell-407, as a civilian helicopter, is definitely not high in wing loads. It can withstand up to 30 kg per square meter. Even after a certain transformation, it has been improved, and the wing load has increased significantly. At most, it's only a tenfold increase. In other words, it is the new Bell 407, and the overall maximum take-off weight is about thirty or forty tons.

"Chief Engineer Wang, can the small body of Bell 407 stand it?" Pu Qiancheng couldn't help but be a little worried.

"It's fine. I've strengthened it. Wang Buan said.

"Won't fall apart?"

"Of course not. ”

"Good. ”

Pu Qiancheng is full of energy again.

With such a large thrust, it would be a pity not to have it full of weapons!

If it's full of weapons underneath, it's a helicopter gunship!

"How much can it be hung?"

"Thirty or forty tons!"

"What??"

"Thirty or forty tons!"

Wang Buan replied lightly.

That's right, it's thirty or forty tons!

After being strengthened by him, the rotors of the Bell-407 have increased and thickened, and the strength can be said to have increased several times. The area of the entire rotor pulp disc has reached about 200 square meters.

It is calculated as carrying about 300 kilograms per square meter. The maximum take-off weight can reach about 60 tons. It's basically the same as the Mi-26.

However, this is experimental after all. Wang Buan didn't dare to say that the data was too full.

Discount. 5% off. That's thirty or forty tons.

"Good, good, good!"

"Great! Great! Great!"

Pu Qiancheng was excited and began to speak incoherently again, dancing with his hands.

He felt that he was finally a hero and useful.

Thirty or forty tons! That's a lot of weapons and ammunition!

If it is fully equipped with aerial bombs, it is almost equivalent to a heavy bomber.

Dozens of tons of bombs are dropped, and it is estimated that within a radius of several square kilometers, it can be turned into a sea of fire.

Ordinary bombers, the speed is too fast, the altitude is too high, and the bombing target is generally not accurate.

But helicopters are different! It can bomb with precision.

It can fly directly over the target and carry out bombing at an altitude of several tens of meters.

It's literally delivering a bomb to someone's doorstep.

It's just not too cruel.

This Wang Bu'an is simply a natural god of death!

His invention, his transformation, and its application in military affairs are simply ideal to the point of being a weapon of mass destruction!

"So much?"

"Thirty or forty tons?"

Du Yande was also taken aback.

In other words, our J-11 fighters can't carry thirty or forty tons of payloads, okay?

You have a Bell 407 helicopter carrying thirty or forty tons of heavy loads?

If the Bell Helicopter technicians had known, they'd all be scared themselves, right?

"Loading 30 tons, no problem. Wang Buan emphasized affirmatively.

For Transformers' technology, have faith.

It's all already discounted. That's absolutely no problem.

"I'll try it later. ”

"Good. ”

As he spoke, Cheng Xiaoshan was already continuing to climb hard.

He also wants to go beyond the height of 12,000 meters. He also wants to set a new world record.

It's a pity that it failed. The highest record is around 12,700 meters.

It's not the lack of power of the engine.

It's not that his handling skills are bad.

It's the innate design of the helicopter. The rotor area is not enough.

You know, at an altitude of 11,000 meters, the air is much thinner than the ground. The total lift is to be drastically reduced.

In order to maintain sufficient height, a very large rotor area must be required.

For example, at least 500 square meters or something.

Like Mi-26, Chinook, Super Stallion or something.

Hit the ...... again

Failed again......

Hit the ...... again

Failed again......

Cheng Xiaoshan is still a little unwilling!

If he doesn't squeeze the performance of this Bell 407 dry, he is always unwilling.

You must know that he is definitely the first active army aviation regiment pilot in China to fly a helicopter to an altitude of 11,000 meters. It's also a history break.

"Captain Cheng, come down. The limits of the design of the aircraft have been reached. Wang Buan said regretfully.

"Okay. Cheng Xiaoshan reluctantly landed.

Continue to test the payload weight.

Du Yande said he couldn't believe it.

Cheng Xiaoshan is also a little unbelievable.

Such a small helicopter can actually carry dozens of tons?

It doesn't look like it......

As the head of the Army Aviation Regiment, he is well aware of all the performance parameters of the helicopter.

When you look at the Bell 407, the rotor area is not very large.

Is the wing load very staggering?

This is not an easy task.

You must know that the manufacturing process of rotor blades is very high-end.

The rotor blades of the Black Hawk helicopter, we haven't been able to make it until now. Someone else can provide lift with four blades, we need five blades. That's the gap.

"Give it a try. ”

"Come!"

Ground crews work together.

A domestically produced Warrior military vehicle was quickly mounted.

Its weight is about 2 tons. Very standard weight. Ordinary helicopters are capable of lifting.

Naturally, it turned out to be easily lifted.

It's a no-brainer.

Cheng Xiaoshan directly hoisted it to an altitude of 11,000 meters.

There are no tests at all.

Land safely.

"Ten tons!" Wang Buan said.

"Good. Du Yande immediately arranged for someone to prepare.

Soon after, a heavy package was pulled out by a trailer.

This oversized package is full of sandbags. Hundreds of sandbags piled together. In total, there are about ten tons.

"Is the quality of your hook passable?" asked Du Yande solemnly.

"No problem. Wang Buan replied affirmatively.

The original hook is, of course, not enough. A maximum of three or four tons of weight can be mounted.

But the quality of the new hook is certainly no problem.

It uses state-of-the-art grade 5 cemented carbide. Each square centimeter can withstand 30,000 tons of pressure.

What is it to mount 10 tons? It is no problem to mount 1,000 tons!

The mount is complete.

Everyone hurriedly retreated.

Du Yande, Cheng Xiaoshan and others are still a little worried about the quality of the hook.

After all, that's a full ten tons of weight!

Once it is in the air, it will sway from side to side due to the influence of air currents.

In case the hook is not enough to bear, it will break.

Frankly, this is a dangerous attempt.

But no one flinched.

Wang Buan has already said that this is a test.

Since it is a trial, it takes courage and a price. They are all willing to take risks.

Takeoff.

Easy to lift.

The ten-ton weight was slowly lifted into the air.

Helicopters climbed steadily.

5,000 ......

8,000 ......

9,000 ......

Well, there is no way to break through 10,000 meters.

After all, the helicopter has insufficient lift due to a ten-ton weight.

The main problem is the rotor area.

The rotor area is too small.

Cheng Xiaoshan tried several times, but failed.

In the end, it can only be a regrettable abandonment.

Land safely.

"Do you want to continue?"

"Three packages together. Thirty tons. ”

"Don't. ”

"Use two first. ”

In the face of Wang Buan's radicalism, everyone was against it.

They still insist on taking it step by step. Try it first with two large packages. That's a weight of twenty tons.

Two wraps, one in front of the other, one behind the other, to keep the helicopter balanced.

Takeoff.

Smooth climb.

It climbs until it reaches about 8,000 meters.

Obviously, under the influence of a weight of twenty tons, the ceiling of the helicopter is constantly lowered.

Land safely.

Continue testing.

This time, it's finally three packages.

Smooth take-off.

Finally, it stops at an altitude of 7,000 meters.

Obviously, another bottleneck.

The heavier the load, the lower the ceiling of the aircraft.

It's obvious. All helicopters are like this. However, this small Bell 407 can carry a weight of 30 tons and climb to an altitude of 7,000 meters, which is already very terrifying.

What's even more terrifying is that it can hover stably at an altitude of 7,000 meters. This is another very impressive achievement.

Hovering at an altitude of 7,000 meters, it is unbelievable to even form a small mountain.

However, in fact, he did hover.

He did stop in the air steadily, almost unmoving.

Swinging from side to side, up and down, the fluctuation range is completely within an acceptable range. In other words, a very nice hover.

This made Cheng Xiaoshan unable to calm down.