When he saw this microwave anechoic chamber, Qin Feng didn't think much about it, this idea came to mind almost naturally.

In fact, the current air combat has just begun to enter the ranks of medium-range air combat, and the United States is technologically advanced, and has developed a radar that can scan 300 kilometers away and a missile that can scan more than 100 kilometers, which seems to be the most powerful technology of this era.

But in fact, of course, these are all moisture, and the scanning range of the AWG-9 radar of 300 kilometers is aimed at targets such as large bombers, such as the Tu-95 and the like, if it searches for small MiGs, it is actually more than 100 kilometers.

Of course, more than 100 kilometers is also very against the sky, after all, the current domestic Jian-7 is only a radar rangefinder, and the real radar that can guide medium-range bombs was originally on the nose of the Jian-8, but unfortunately it has not been able to break through.

As for its missiles, it also took a shortcut, and after taking off, it immediately climbed to a high altitude, and the air at high altitude was thin and the resistance was small, so it naturally had a longer range.

Then, according to these theories, it is easy to come to the conclusion that if the radar reflection area of the fighter can be reduced, then the probability of being detected by the opponent's radar, or the distance, can be greatly reduced.

Ordinary aircraft, if they are caught at a distance of 100 kilometers, if their radar reflection ability is reduced, they may only be discovered at 50 kilometers, or even 30 kilometers, and at this time, they have already reached the visual area.

Now when it comes to stealth aircraft, it is absolutely a fantasy, for most countries in the world, this is impossible, it is simply alien technology.

When Qin Feng said this, he just felt that this microwave anechoic chamber was the most suitable for this research, but he didn't expect it, but it startled Pelehak.

What the? Reducing the radar reflection area, isn't this a stealth machine? Could it be that they also have research on this?

In fact, although there are no rumors of stealth aircraft in the outside world, the first stealth aircraft of the United States has been quietly put into service, and in terms of the degree of secrecy, the Americans have done quite a good job.

If you want to talk about stealth capabilities, you have been exploring since the U-2 era as early as possible, and on the SR-71, the black appearance is said to be a stealth coating, but the speed of that thing is too fast, and the blackbirds in the high temperature have become blue birds, even if they can be stealthy in front of the radar, the super engine sprays flames, and the huge noise, will also make it in its original form, it just won't be attacked, no aircraft can reach its height, and the avionics of the MiG-25 are too poor to have the ability to attack it.

The official stealth aircraft project should be in 1973, the new stealth fighter program of the United States was established, and finally the Lockheed advanced development program won the contract.

In 1977, the Lockheed Skunk Works built two small experimental stealth technology that could actually fly, and the shape of this aircraft was basically similar to the later F-117, and this polyhedral structure simply stunned all aerodynamic experts, so much so that everyone agreed that this thing could not fly.

Although Grumman did not bid, Pelehaq was aware of the project, and when he saw Havelan for the first time, his surprise was palpable.

Although everyone thought that it could not fly, the project was progressing smoothly, the first flight was finalized in 1981, and it entered service in 1983.

If you want to build a stealth aircraft, you need this kind of advanced microwave anechoic chamber, Qin Feng's feeling made Pelehaq can't help asking: "Do you mean to build an aircraft that can't be seen in front of radar?" ”

This sentence was tentative, and Qin Feng's next answer reassured him: "How is that possible?" Can't see in front of the radar? At most, it is just to shorten the detection range, and if the radar reflection area of a fighter can be reduced to the size of a ping-pong ball, it will not be visible at all, right? ”

Sure enough, where did Qin Feng know what stealth machine was, he just felt it.

Pellehak was relieved: "Yes, that's absolutely impossible, unless it's a paper airplane, let's go, let's go and see our test flight equipment." ”

After the fighter is produced, it is necessary to carry out factory test flights, and after qualifying, they can be flown to the army to serve, the domestic J-7 is like this, Qin Feng was originally the test pilot of the J-7, and after the Tomcat fighter here is assembled, the company's test pilots will fly 3 times, and the Navy will test 2 flights before leaving the factory.

When I was at Dassault, we saw Dassault's advanced flight test equipment and saw the automated Daming system, which was so advanced that the flight test institute also introduced a set for test flights.

And now, the United States is more technologically advanced, what are their characteristics?

When standing on the indoor test bench again, Qin Feng was shocked again, it's good to have money!

After the aircraft is assembled, it must first conduct ground experiments, start the engine, check whether the various systems are normal, etc., J-8 burned the entire aircraft at the moment of starting, and suffered heavy losses.

In everyone's impression, the test flight of the plane must be outside, but Grumman has done all this indoors!

At this time, you can see a huge Tomcat fighter on the indoor aircraft test bench.

The plane is indoors, and the engine cannot be turned on, otherwise, the heat flow in the tail will turn the whole room into a terrible big oven, and everyone will be roasted to jerky.

This is almost a very intuitive feeling for everyone, but who would have thought that this is what people do.

When everyone came in, they could see that the fighter plane that was on the test bench was turning on the engine, and the blazing flames in the tail were spewing out towards the back channel, and the channel was upward, with a forty-five-degree angle, and just like that, it was sprayed to the outside!

This is quite an achievement!

The wake is emitted to the outside, and in this way, the problem of exhaust gases is solved, and at the same time there is very little noise, at least much less than the sound of a chainsaw.

On the side walls, there is a huge electric fan, which is whirring and spinning.

The engine is not only a monster that drinks oil, but also swallows a huge amount of air, a car starts in the garage, and the people in the car will suffocate due to excessive carbon dioxide concentration, and here, if there is no efficient way to ventilate, then after the engine starts, all the oxygen in the room will be consumed.

"You can change the air in the whole room three times a second." "We test the vehicle indoors to avoid noise pollution to the environment and to test the aircraft parameters with a computer," says Pellehak. This plane, which has been tested from the test bench today, will be able to go out for a test flight tomorrow. ”

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