Chapter 387

Helicopter equipped with air filter is a kind of black technology.

After all, before that, no aircraft in the world would install an air filter on its own intake duct, which really affected the air intake.

However, with the powerful function of system upgrading, Chen Xin has developed an air filter that can be installed on a helicopter, so that the helicopter can fly with an air filter.

"After installing the air filter, will the dynamic performance of the aircraft be affected?" Chen Xin put the two air filters removed from the zhi20 on the table and asked the pilot beside him as he took them apart.

"There is a certain impact. The intake air does have a certain attenuation compared with before, but on the whole, it can still meet the flight needs, only the engine power is lower than before, and the load needs to be adjusted." The pilot reported the situation to Chen Xin, and also told Chen Xin about the changes of aircraft performance parameters after the installation of air filter.

After listening to the pilot's introduction, Chen Xin nodded clearly: "it seems that the installation of air filter still has a great impact on the engine's air intake. Although it is not impossible to fly, it also has a great impact on the engine power. Without moving the engine, we can only continue to improve the air filter or enlarge the intake duct. "

"If you enlarge the intake duct, it will affect the structure of the aircraft, right?" Naturally, the pilot is also knowledgeable. When Chen Xin said that he wanted to improve the air culvert, he was worried that it would damage the aerodynamic layout of the aircraft.

"It may have a certain impact, but it can be adjusted and it won't get in the way." Chen Xin doesn't care about this, and what he says seems to be understated.

Enlarging the air inlet duct does not affect the aerodynamic layout of the aircraft. This will be a big project for a normal aircraft designer, even equivalent to redesigning the whole aircraft. But for Chen Xin, who holds the system in hand, this is really nothing.

While studying the disassembled air filter, Chen Xin suddenly asked the pilot curiously, "how did you come here when it's so dark without satellite navigation?"

"If there is a positioning instrument on the plane, you can still determine the position. If you use it with an altimeter, there will be no risk of being lost." It's easy for pilots to say, but only they know the danger and difficulty.

Night flight itself is a very difficult challenge. Before the disaster, with satellite positioning, tower guidance, air control and many other auxiliary conditions, night flight seems not so difficult. Anyway, it's just to fly according to the preset data. After all, there is no reference when flying high. Everything depends on various flight auxiliary systems on the plane, and even can turn on the automatic control Pilot, let the pilot have a rest.

But with the loss of these things, flying has become a very dangerous thing in the past that tests the level of pilots.

After losing the modern auxiliary means, there is not much difference between today's aircraft flight and World War II, except that today's aircraft is more advanced, with the help of computer. Compared with World War II pilots who can only calculate their own position by compass and watch, today's pilots can intuitively read from various instruments on the aircraft The exact location of the target.

However, this does not reduce the risk of night flight, especially in the case of low visibility, where there is almost no reference object on the ground, and the helicopter's flying altitude is not high, it is likely to hit the mountain and cause disaster.

Under such circumstances, the pilot is really risking his life to fly the helicopter here. It's really amazing.

"Anyway, it's very dangerous!" Chen Xin sighed and admired the pilots.

"How can soldiers fear danger?" The pilot seems to have been aware of this for a long time, and did not show any emotion: "since he has chosen to be a pilot, he has already thought about the danger he will face."

Hearing what the pilot said, Chen Xin couldn't help looking at him deeply, but didn't say anything more. He just turned his attention to the air filter in his hand, and then upgraded it with the functions of the system.

"I have made some adjustments to this air filter, which should improve the air intake. You can test it when you go back. After you go back, let the professional technicians have a look. If you have any problems, you can call me at any time." Chen Xin handed the upgraded air filter back to the pilots and helped them install it on the helicopter.

The pilot saluted Chen Xin and said, "thank you for your help. Let's go first."

Perhaps because of the military's poor words, although the pilot expressed his thanks to Chen Xin, he didn't say much, but his thanks to Chen Xin were sincere.

"Bon voyage." Chen Xin didn't mind. He laughed at the pilot and watched him get on the plane, restart the plane and set off a gust of wind.

Back a few steps, back to a safe distance, watching the helicopter's propeller rolled up all over the snow, and then gradually pulled up and disappeared in the night sky.

"If we can get the plane back in flight, then life will be much better in the future." Looking at the helicopter flying away, Chen Xin couldn't help sighing."Helicopter may not be a big problem, but is that kind of big jet OK? The air intake problem of large aircraft engine is much more serious than that of helicopter engine, isn't it One side of the commissar heard Chen Xin sigh, suddenly curious to ask him.

Compared with helicopters with limited carrying capacity, fixed wing aircraft is the real focus. After all, civil aircraft, transport aircraft and military fighters are all fixed wing aircraft, and their engine intake is more huge, especially for large aircraft. While several engines bring huge lift, the demand for air is also extremely amazing.

But if we can solve this problem and let large aircraft return to the sky, it will bring amazing changes to the current situation.

"For large aircraft, consider the traditional propeller aircraft first. Their engine intake is not as exaggerated as that of jet aircraft. They can still fly with air filter, and if necessary, they can be electric." Chen Xin is still thinking about this, but he has no good idea about jet aircraft: "as for jet engine If the air quality is not greatly improved, it's better to consider redesigning. The air filter can't meet the flight needs. If a sound barrier is broken, the air filter will be broken. "

Although not all jet aircraft can break through supersonic speed, it is obvious that the supersonic fighter in the army is the key to solve the problem.

However, Chen Xin can't help him with this. If he gives him an aero-engine, he may be able to transform it into an engine that can be used in today's environment, but it's not very necessary.

Because the dust in the air will only affect the flight temporarily. As the dust gradually falls, when the air quality meets the flight requirements, those jet planes can naturally return to the sky. There is no need to redesign an engine to meet the short-term needs.

After all, you can't fly, so can other people.

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