Chapter 202： upgrade plan

Latest website: The test to verify the model airplane is in full swing, especially Cai Xiongfei's current state, he has been deeply attracted by this small model airplane.

It is really that the performance of this aircraft model is too good, completely beyond his expectation,

Especially with the layout of this helicopter, the side-by-side dual-rotors allow all the horsepower of the aircraft to be used in real terms. After there is no reaction force, there is no need to estimate the tail rotor at all.

So the effect is that under the same horsepower, the overall performance is 30-60% higher than that of ordinary helicopters.

A week has passed since the delivery ceremony, and during this week, he and Cai Xiongfei conducted model airplane test flights over the company's open space every day.

Cai Xiongfei held the remote control in his hand and controlled the model airplane to slowly land not far from the two of them.

After the aircraft came to a complete stop, all power was turned off, and the two sets of rotors were controlled to retract.

After doing this, he turned his head and looked at Li Zhenhua.

"It has been more than half a month since the test flight. So far, I haven't had any problems with this model airplane.

And some actions that have high requirements for the aircraft can also be done on this model aircraft.

It is a very flexible helicopter, and it is still heavy! "

After Cai Xiongfei finished speaking, he took off the remote control around his neck and showed him the remote control.

"The only thing is, this remote control method is actually not that good for me as a pilot.

At the beginning, I thought the control method was the same virtual control cabin as Suzaku, but after I came here, I realized that it was a model remote control.

This is something I didn't expect, so in some actions, using this remote control is not as intuitive as the control method, nor is it flexible. "

Li Zhenhua, who was standing opposite him, listened quietly to his narration.

I was also thinking about the question Cai Xiongfei said in my heart. Earlier, I thought it was a model airplane for verification.

There is no need to make it so detailed, but now the other party has raised these things, I really haven't considered them.

It is indeed a bit of negligence, and it is still the way of the virtual control cabin, which is suitable for the pilot's control.

"Captain Cai, I really didn't think carefully about this point. In this way, you wait for me for two days. My virtual control cabin is ready-made.

As long as the model airplane is slightly modified and some electronic components are added, a model airplane controlled by a virtual control cabin is still very easy to realize.

After we finish the simulation control cabin, please measure some important data again,

In this way, the data I collect is accurate, and it can also provide directions for my future improvement. "

After listening, he nodded towards him, and then he asked again.

"Then at this stage, you can talk to me about how you feel about this model airplane,

Is there anything you think needs improvement? "

Faced with his question, Cai Xiongfei thought carefully, racking his brains to think about the shortcomings of flying this model airplane.

"If you want to talk about the shortcomings, I really haven't found out this. In my opinion, the development of this aircraft model is very successful.

But I have some opinions about this helicopter, let me chat with you!

That is, when taking off, the two sets of rotors are not so fast when starting up. Maybe in wartime, when performing emergency take-off and landing missions, the advantage is not so obvious.

If this fast takeoff problem can be solved, I feel this helicopter will be an invulnerable aircraft. "

Helicopter scramble too slow? This is due to the need to coordinate the synchronization of the two sets of propellers when starting the two sets of propellers.

This is not difficult to solve. The main reason for the current situation is that the aircraft model is too small in size, and there is no way to install the separate control system hardware on the aircraft model.

On a real device, this problem does not exist at all.

He continued to look up at Cai Xiongfei and said, "Is there any more?"

"Another point is whether this model airplane is a little too fat, and I feel that it is not slim enough. Of course, this is just my own feeling."

Hearing this, he couldn't help but turn his head to look at the model airplane parked beside him. He took a quick look and found that he was really a little fat, and the overall proportions were indeed not so coordinated.

It seems that we still need to work on the fuselage. After Cai Xiongfei's reminder, it seems that there is really no need to make this plane a fat man.

This involuntarily reminded him of the Comanche, and the stealth-designed fuselage fit his layout well!

Thinking of this, he decided that the fuselage of the real plane really needed to be changed, and it wasn't for a transport helicopter.

The positioning is very clear, it is a multi-purpose helicopter platform for military use, so since it is for military use, it might as well make it more thorough and pure.

The stealth appearance design is very eye-catching in terms of appearance.

"Yeah, I see, I'll put more effort into the fuselage, is there anything else?"

He continued to ask, but Cai Xiongfei shook his head at him.

"That's fine, Captain Cai will take a rest for the past two days, and when I change the control method of this model plane, please give me a test again.

Viagra, come here! "

After talking to Cai Xiongfei, he turned around and called Ning Wei who was next to him.

Ning Wei was helpless when he heard his name being called, but since he was called, he couldn't help but respond.

On his name, he had been arguing with Li Zhenhua for a long time, and he was never allowed to change it, so he gave up resisting.

"Viagra, you call a brother and take Captain Cai for a walk around our side, and also visit the places of interest on our side."

After a few words with Ning Wei, Cai Xiongfei's affairs were arranged, while he asked someone to carry the model plane to the workshop and walked back.

Back in a small compartment in the workshop, the largest automobile laboratory was manufacturing the Qingniu bus, and he would not enter it if he had nothing to do.

This small compartment was prepared by him to make some small things, and the equipment in it was all used when he was playing with watches before, and he moved it here from the second floor of the blacksmith shop.

After returning here, he did not immediately change the control mode of the model airplane. Instead, he put the model airplane on the workbench, and he himself returned to the rest room, lying on the bed and closing his eyes.

After all, he never thought about turning the control mode of the model airplane into a realistic control cabin, so he has no modification plan at all now.

So what is needed now is to come up with the transformation plan, and this is also the time to use the virtual laboratory.

Entering the laboratory, he waved a small aircraft mold in front of him.

He immediately dismantled the aircraft model body, and when the electronic control system inside was disassembled, he stopped completely.

The control system hardware that was previously designed to be used on the real machine is also realized. Looking at the parts placed on both sides, I suddenly feel a little headache.

As for the reason, it is entirely because the hardware of the electronic control system to be added is too large. If it is not streamlined, there is no way to put it into the model aircraft.

So the first thing to optimize is these hardware. Fortunately, this is a model airplane, which is far from the real machine, so the amount of calculation is not as large as the real machine, and the corresponding electronic hardware can also be optimized.

Slowly optimize these hardware from the size of a notebook to a Chengdu that is the size of a mobile phone, and the integration inside is very high. Fortunately, some graphene wires are used, otherwise the heat dissipation will be a problem.

Moreover, he also upgraded the hardware used by the control system into it. The addition of the functions of these two parts has increased the electronic system of the entire aircraft model.

Among them, the difficulty of upgrading is undoubtedly more difficult than redesigning. Fortunately, he is a cheating man, and his cheating life needs no explanation.

Very smoothly, these two problems on the model plane were all solved!

After solving the problem of this little thing, he also put all his attention on the real machine,

Compared with the problems of model airplanes, the problems faced on the real plane are what he wants to focus on solving now.

The problems reflected on the model aircraft are also reflected on the real aircraft. The two items of control and take-off speed are not so difficult.

The control on the real machine is not a remote control, and the real machine is not a drone mode, but a manned aircraft, so the problem of control no longer exists.

Another problem is the emergency take-off. Since the airframe is very large, it is easy to find a space that can accommodate electronic components the size of a case.

The main function of this control system is to control the six motors to output the maximum power when starting.

And these two problems that are obvious on the model plane are not so difficult to solve on the real plane. In fact, these two problems are not considered problems on the real plane.

But the biggest problem facing the real machine is Cai Xiongfei's inadvertent complaint.

It was that sentence that was a bit too fat, and it was also this sentence that made him find a crux of the real machine.

Since it is a completely newly designed model, why should it be limited to the previous vision?

Veyron, Falcon Eagle and the J-36 (Suzaku) designed by him all adopt stealth design, and fighter jets all use stealth design, so why can't they be used on helicopters?

What's more, this concept is not too advanced, so the body of the real machine needs to be redesigned.

In addition to the concept of stealth, the overall model was redesigned, and the stealth paint previously developed for the J-36 was used on the shell of this helicopter.

In fact, the stealth design of helicopters is ten times, dozens of times, or even hundreds of times more difficult than the stealth design of fighter jets. This is entirely determined by the attributes of helicopters.

The propeller rotating above his head alone is not so easy to solve. The fast rotating propeller is an unsolvable problem for not reflecting radar waves.

Fortunately, this new type of helicopter he designed has eliminated the flaw of the tail rotor, otherwise the difficulty will increase.

But these can't stop him, he is a person who faces difficulties, of course the main reason is that he can cheat.

The first is the stealth design for the shape of the fuselage. If the helicopter wants to achieve stealth, it must first start with the aerodynamic layout.

His current dual-rotor design undoubtedly makes stealth more difficult. Fortunately, this is another experience that can be used for reference.

As for the stealth design of the helicopter, although the design experience of the stealth fighter cannot be copied, it still has reference value.

Therefore, some good stealth designs on fighter planes can be transferred to helicopters.

The shape stealth principle that had been verified on the J-36 before was applied to the shape of the helicopter.

Due to the characteristics of helicopters, it is different from jet fighters operating at high altitudes. The scope of helicopter activities is generally all at low altitudes and ultra-low altitudes.

And they are all within the range of activities. For the formation of stealth on the radar, you can use your own stealth design and use complex ground terrain to avoid the detection of local radars, such as mountains and valleys.

Therefore, on the topic of helicopter stealth, compared with traditional fighters, the appearance stealth design is not so important.

With his previous experience on the J-36, those successful stealth design experiences are completely sufficient.

Slowly the shape of the fuselage is changing according to his design, and the actual test of radar wave reflection is also done in the laboratory,

To achieve stealth from this direction alone, obviously the performance on the radar is not so ideal. The two sets of rotors above the head are the problem.

After his multi-directional experiments, the aircraft looks less and less like a traditional helicopter.

After his many changes, the shape is like a flat inverted cone with edges and corners, and the rotor, which has always been a problem of invisibility, is also wrapped in it.

After wrapping the rotor, the invisibility effect immediately increased exponentially,

Now he can proudly say to all the helicopter design institutes in the world: "Don't get me wrong, I'm not targeting someone. I want to say that everyone here is rubbish!"

However, for the sake of stealth, the folding wing function of the upper ship was eliminated. After he found out, the shape was already designed, and once he started to optimize it on this basis.

The package of the rotor belonging to the fuselage is optimized to be foldable. When the folding is completed, these package parts are received on the fuselage below, and the rotor is still folded backward as a whole in the same way as before.

When this step was completed, he had no more moves in appearance, and he had already used all the skills he had now mastered,

Maybe in the future with the increase of knowledge, the shape can be improved, but at present he can't optimize it any more.

Returning to the problem of helicopter stealth, he has already achieved the ultimate in appearance, but this cannot ignore another problem.

That is noise. The missions to be performed by helicopters are all ground strikes, such as tanks, seizing beaches, covering infantry for special missions, cooperating with special forces to perform beheadings, and so on.

These tasks are all required to be completed at close range, and the noise produced by the helicopter can be heard several kilometers away, which is extremely unfavorable to the penetration and safety of the helicopter.

How to solve the noise of the helicopter depends on the cause of the noise.

The main reason is that when the propeller is flying, it will tell the rotation and cut the air, and the friction with the air will produce extremely high decibel noise, which is also the main reason for the exposure.

So his next step is to consider how to eliminate the noise as much as possible.

There are two main sources of helicopter noise, engine noise and blade noise.

The engine noise is easy to solve. For his helicopter, it is completely negligible, because he does not use a traditional engine.

He uses an electric motor, so in terms of quietness, it has an inherent advantage over a fuel engine, and the electric motor he uses,

In the beginning, it was used on high-end models, so quietness is also an important indicator of high-end luxury cars, and it can control noise very well.

In this context, the problem of engine noise no longer exists, and the next step is to reduce the noise generated by the two sets of blades.

In this regard, in his research, he came up with a combination of three methods to solve the problem of blade noise.

First of all, the sound insulation and sound absorption design is carried out on the surface surrounded by the rotor. The principle of use is not responsible, but the principle of sound insulation room is actually used.

Surrounded by the originally smooth perimeter, he turned it into a honeycomb structure. Many small honeycombs form a large honeycomb, and the overall structure is a honeycomb structure.

The second is to optimize the source of the noise. The noise generated by the rotation of the rotor is reduced by changing the shape of the blade.

The specially designed paddle shape, to a certain extent, reduces the noise to the lowest state.

After the optimization of the previous two methods, the noise is already small enough compared to before, but the relative noise is still relatively large.

This is about his unique third point of design, his aircraft has two sets of rotors,

However, the noise generated by the ten blades was already very small after two measures. Here he thought of using the principle of ultrasonic waves to eliminate the remaining noise.

Through a special device between the two sets of rotors, the audible sound produced by the blades is converted into ultrasonic waves,

Utilize the short wavelength of ultrasonic wave, which is easy to lose and scatter in the air, and it is not as good as audible sound to propagate far, to deal with the final noiseOf course, ultrasonic wave is harmful to the human body to a certain extent , so in his design, this special device will not be turned on under normal circumstances, and it will only be turned on when performing tasks that require stealth.

And in the helicopter cockpit, professional protection has been carried out, and the protection against ultrasonic waves is simply omnipotent.

To sum it up in one sentence, that kid Li Zhenhua's shooting on this helicopter has evolved to an abnormal level.

The stealth performance of the helicopter also starts from multiple directions, not only in avoiding radar, but also in the almost abnormal protection against noise.

And those external weapon hanging points on the shape are all designed as internal magazines, which is more perverted than any stealth gunship design in the ball.

It is entirely its shape and stealth requirements that determine this design!

This helicopter looks different from mainstream helicopters in appearance!