Just last year, China has organized an inspection delegation to Albania to inspect the MiG-21MF fighters there, and only some equipment was brought back at that time.

And this time I came back, and I harvested a lot and brought the entire fighter, which is of great significance for the country's aviation research.

"Tu Lao, I'm back." When Qin Feng came back, he went directly to Factory 132.

Qin Feng now has a lot of identities, he used to be just a test pilot of the J-7 II, and now, he has another job, which is to participate in the design of the new J, but now the design of the new J is not the most urgent, he still has a lot of follow-up test flight subjects, and now that his body has recovered, it is time to continue the test flight.

"Well, Comrade Qin Feng, it's just right to come back." Tu Lao said to Qin Feng, "What did you gain from going to Egypt this time?" ”

When going to Egypt, this was a strictly secret project, but as soon as the two planes were loaded onto a cargo ship and left the Egyptian docks, the level of secrecy was reduced.

Now, Tu Lao asked him what he had gained from going to Egypt, so naturally Tu Lao also knew, so Qin Feng said: "The harvest is very big, we saw the MiG-21MF, by the way, I also flew around." ”

"And how do you feel?" Tu Lao continued to talk to Qin Feng.

Today's test flight mission has ended, just in the tower next to the factory runway, other test pilots also surrounded him, Wang Gang said to him: "You kid, you really have yours, you can still go abroad to fly on a new plane." ”

Qin Feng scratched his head and said, "I feel that its mobility is not as good as our J-7 II. ”

Qin Feng tried hard to recall the experience of his flight, and from the perspective of various flight feelings, it increased the back ridge and increased the nose air intake cone, and the change brought by it was the decrease in maneuverability.

"What? Isn't that a modification of the MiG-21? Why isn't it as good as our mobility? Wang Gang immediately asked puzzled, of course this is not a suspicion of Qin Feng, but he feels incredible, the more he changes, the worse the mobility?

A trace of doubt flashed in Tu Lao's eyes, and then he said: "In a few days, this plane will arrive at our 132 factory, and when the plane comes, let's fly a few sorties, and it will be clear." ”

"Really?" This time it was the turn of the test pilots to be surprised, everyone is in full swing to test fly the J-7II, who would have thought that there would be a new MiG-21 fighter jet, come to their own 132 factory?

Tu Lao nodded: "This plane was originally handed over to Shenyang to get it, but Shenyang was not interested, so the Air Force decided to send this plane to our 132 factory, and we will carry out surveying and mapping imitation." ”

In China, the 601 Institute in Shenyang is definitely the leader in aviation research and development, but now the 601 Institute is engaged in J-8, and Qin Feng also knows that the 601 Institute is interested in the MiG-23, so the MiG-21MF was sent to the 132 factory for surveying and mapping.

What is Elder Tu worried about? Qin Feng had just noticed the worry in Tu Lao's eyes, could it be because of what he just said, the performance of the MiG-21MF was not good enough?

Is it worth exchanging a decrease in mobility for all-weather combat capability?

Qin Feng couldn't help but ask himself in his heart.

Qin Feng unconsciously found that his role had changed. In the past, Qin Feng was just a test pilot, and he could fly whatever subjects he should fly, but now, Qin Feng has begun to think more, which is what a qualified aircraft designer should think about.

"Qin Feng, I heard that Lao Song is going to you, I fought with my superiors, in the future, every week, you can go to the 611 Institute for two days, and the rest of the time, you will still take on the task of test pilots in our 132 factory, how about it?" Tu Lao continued.

Qin Feng nodded: "That's great, our fighter plane, there are still many subjects waiting for me to test fly, by the way, how did you find the fault last time?" ”

If you stay in the 611 Institute in the future, you don't know when you will be able to continue flying, which is of course inappropriate, now, seven days a week, fly five days by yourself, and study the J-9 for two days, which is good.

Rest? Test pilots don't need to rest, and going to the 611 Institute is considered a rest.

"The fault was found last time, it was because of the manufacturing defect of the oil pipe, we have fed back our opinions to the Dawn Factory, and asked them to increase the quality of the oil pipe, Qin Feng, last time I was thanks to you for flying back the fighter." Tu Lao said.

If Qin Feng hadn't risked his life to fly the fighter back last time, I'm afraid it would have been difficult to find the cause of the engine failure.

"At the same time, we also decided to modify the design of the rear fuselage and add thermal insulation measures to avoid similar situations."

The task of the test pilot is to test the improved aircraft, constantly exposing the faults, and eliminating the faults, so that it is better than letting the faults appear in the troops.

Qin Feng heard that the fault had been found, and he also had suggestions for improvement, and he was very happy in his heart, although he risked his life, it was still worth it to be able to reduce the various dangers of the troops.

"Moreover, this test flight also exposed another flaw of ours, or our regret, so we reported to the authorities again, hoping to equip our fighters with new ejection seats as soon as possible." Tu Lao continued.

Qin Feng had a dangerous situation in the air last time, if there was an advanced ejection seat, it would not be so embarrassing, but unfortunately, although his J-7II fighter has adopted a new cockpit canopy, which is flipped backwards, and it is no longer the previous complex forward flipping mechanism, but the ejection seat is still old-fashioned.

In 1975, relevant scientific research institutions began to develop their own HTY-2 rocket ejection seats with higher reliability.

By design, this ejection seat is equipped with a high-thrust ejection rocket, which accelerates smoothly when ejected, reduces the likelihood of spinal injuries to the pilot, and has a higher ejection trajectory.

The current ejection seat cannot be ejected at zero height, but this new ejection seat can be ejected normally at ground height and at a speed of more than 260 kilometers per hour.

When ejected in the air, the aircraft can reach a maximum flight speed of 890 km / h. If there is such an ejection seat, then the pilot's life is more guaranteed.

However, the situation of the country in recent years is also obvious to all, scientific research can not be carried out normally at all, and this planned ejection seat does not know when it will be installed!

Tu Lao could only keep reporting to his superiors, and this report took five or six years, and it was not until 1984 that this ejection seat was finally installed.