Qin Feng watched the deceleration parachute at the tail of the J-8 catch fire, and at this moment, under the setting sun, this fire ball suddenly fell backwards like a kite with a broken string.

The test pilots here are really experienced! Qin Feng couldn't help but sigh in his heart.

J-8 has almost no backward vision, after releasing the parachute, as long as you don't feel the excess torque brought by the deceleration, you know that there must be a problem with the parachute, at this time, just throw away the parachute!

At the same time, on the side of the runway, there was a soldier waiting to collect the parachute, I saw that the soldier was carrying a fire extinguisher in his hand, chasing the deceleration parachute on fire, and soon caught up, in the milky white foam, the flame on the parachute had been extinguished, but at the same time, it was almost burned to slag, just like putting a Kong Ming lantern.

Due to the absence of a parachute, the J-8 fighter slid on the runway for a long time, almost to the end of the runway, and the test pilot finally stepped on the brakes.

At this time, Qin Feng had already run over.

From the overall point of view, this kind of aircraft is the double-hair large version of the J-7, its cockpit is still in the form of the earliest J-7I, the overall cockpit canopy is turned forward, this cockpit is quite complicated to eject, the success rate is very low, dare to fly this kind of aircraft, is the hero!

The ground crew set up the ladder, and inside, a pilot wearing a high-altitude helmet was steadily walking down the ladder.

This helmet, like the Soviet GSh-4 helmet, wrapped the entire head tightly, almost with the MiG-21 era.

It was quite uncomfortable to wear such a helmet, so almost after getting off the plane, the test pilot took off the helmet and said: "No, the rear fuselage is still overheating, and this time the parachute burned again." ”

As soon as he finished speaking, he saw a face standing in front of him, and said: "This comrade, I haven't seen it before, look at your eyes, you are also a pilot, right?" ”

As long as the peers looked at their eyes, they knew that Qin Feng stretched out his hand and wanted to shake hands with the other party, but before he could introduce himself, the pilot had already walked quickly to the rear fuselage.

As soon as I got close to the rear fuselage, I could feel a wave of heat hitting me, as if I was walking in the desert.

Qin Feng followed behind the other party, knowing that the other party was not rude, as a test pilot, caring about the plane was their first priority, and after the test flight was over, the first thing was to find the plane.

Qin Feng also felt a lot of heat flow in the rear fuselage, and when he came to the tail, he immediately saw that something was coming.

"This horizontal tail wing is designed too far back!" Qin Feng said: "In this way, the high temperature of the engine in the rear fuselage is easy to transmit." ”

Qin Feng's words made the test pilot turn his head and said: "You can really see the way out, no way, our engine can't do it, if you want to achieve the designed speed, you have to lengthen the fuselage, if you don't translate the tail here, then the head-up moment will not be enough." ”

The characteristic of the J-8 is that it is long, and if this kind of aircraft wants to raise its head, it needs to pry its torque, so the extended arm is the most suitable.

Qin Feng could only nod when he heard this, yes, everything was caused by the engine not being strong.

However, in any case, this is a design flaw, and the first domestic design of an aircraft must have been ill-conceived.

"Wang Yang, how is it?" Just as the two were talking, a few more people came behind them, Qin Feng turned his head, and he could see that Mr. Gu and the others had come over.

Seeing Qin Feng, Mr. Gu also had a happy face: "Qin Feng, why are you here?" Great, you come and fly our J-8 with Wang Yang and others, and the tail spin test flight of the J-7 will be handed over to someone else. ”

Hearing Qin Feng's name, the test pilot named Wang Yang was very surprised: "You are Qin Feng?" I heard that you drove the flaming J-7 back to the airport, everyone is talking about your courage enough, and now, you are going to fly the J-7's stall tailspin, be careful. ”

After speaking, Wang Yang patted Qin Feng on the shoulder.

Qin Feng was also excited, of course he had heard of Wang Yang's name, he was an old flight of the J-8, he had been flying on the J-8 for almost ten years, and he had seen all kinds of problems.

This is not the time to greet each other, everyone quickly gathered around the tail of the J-8 and communicated again.

The tail is still overheated, this problem has been bothering everyone for several years, the subsonic test flight is over, and now at supersonic speed, the same problem has appeared.

"Qin Feng, I heard that the last time you flew the J-7, the engine was caused by overheating, how did you solve it at that time?" Wang Yang asked towards Qin Feng.

"At that time, it was carefully studied by Tu Lao and others, and finally solved it by using pad insulation tiles." Qin Feng said.

"Why don't we take it too?" Mr. Gu gritted his teeth and said.

The faster the speed of the aircraft, the more it rubs against the air, the greater the heat, and at the same time, flying at supersonic speed, it has to be turned on afterburner, and the tail is even hotter.

This problem was solved by pad insulation material at the beginning, but now do we need to pad it?

No, if you pad it like this, it will be heavier in the back, do you still need to trim the lead block in the nose? This method can no longer be used.

Qin Feng walked to the tail of the plane, looking at the deceleration parachute cabin that was baked out due to the overheating of the engine, in fact, when the deceleration parachute was inside, it was already broken, and after it was pulled out, it was even more blazing.

This tail is much larger than the J-7, like the tail of the enlarged J-6, since the space is so large, why not think differently?

It's better to be blocked.

To be a qualified test pilot, you must not only be skilled in flying, but also be able to analyze various problems, so that you can be mature.

For example, now, a problem has been found in a test flight, and it is necessary to use your brain to think about how to solve it.

Everyone is thinking, if this problem is not solved, every time you come down in the future, the parachute will be burned, how can this work?

It's not just the parachute cabin, look at the sharp cone at the tail below, it's burned like an iron chisel of kebabs, this is not good.

"Mr. Gu, I have an idea, I don't know if it will work out." Qin Feng said in the back.

After all, Qin Feng didn't specialize in flying J-8, and now Qin Feng just came over to join in the fun when he was idle, and he wanted to give advice, of course he was cautious.

"Say it, Qin Feng." Mr. Gu was still frowning.

"This rear fuselage, and then a new thermal insulation device, is not easy to solve the problem, I think, if we use other measures, such as increasing cooling, how about it? We increase the flow of incoming cold air and use air to cool it. ”

Qin Feng's words suddenly shocked the hearts of everyone present, yes, why didn't you think of this method?