This merger, now the benefits have not been fully reflected, and even because of the merger, it will definitely lead to some comrades complaining, but this is definitely a major reform in the domestic aviation industry, this merger, Chengdu Aircraft Industry Company has really broken out of the cocoon, towards the world's famous Chengdu Luoma forward.

(A little trickery, the two best aircraft design units in China, Chengdu, called Cheng Loma, military fans know, Lockheed Martin, is a well-known large company in the world, but also the first giant of military aircraft research and development, what F-22, F-35, etc., are all made by them, as for Shenyang, it has won the nickname of Shen Hoi, this is of course to take off Sukhoi's hat, Sukhoi, is the Soviet Union, after the collapse of Russia, the most powerful military aircraft research and development institutions.) ）

Now, this step has just begun.

Qin Feng agrees with this, just take what they need, it is definitely good for the progress of the entire aviation industry, but any reform, it will always touch the interests of many people, and this time, the merger is mainly based on the 611 Institute, which is also a test for Tu Lao.

Qin Feng really wanted to see Tu Lao once and talk to Tu Lao, but Qin Feng didn't have time, because the test flight of Jian-H-7 was still waiting for Qin Feng, and for him, the next test flight was still full of tests.

However, for Qin Feng, this is a very happy period of time, every day after completing the test flight subject, he can return to his wife and his children, Xiaohutou has made obvious progress these days, every day when he goes home, when he sees his parents there, Xiaohutou is quite happy.

In the blink of an eye, months passed.

"Today, it is our first time flying supersound, Comrade Qin Feng, you must be careful." Before stepping onto the plane, Chen Lao said to Qin Feng.

Because it is a fighter-bomber, not a pure fighter, there are very few test flight missions such as various circling and maneuvering, and after exploring the flight envelope little by little, the subsonic test flight will gradually come to an end, and then, it will enter the supersonic test flight.

Subsonic and supersonic speed are very different, many control methods, and even opposite, using subsonic control will get a reverse result, so it is very dangerous to test fly a new model.

Now, Qin Feng is flying supersonic for the first time, which is a lot of psychological pressure for everyone.

"Don't worry, this time, I guess I'll have to burn some more fuel." Qin Feng is very relaxed, for him, flying at supersonic speed, there is nothing to worry about, especially the engine used by the J-7, which is the most reliable, these days of test flights, almost never encountered any problems caused by the engine.

Spey is mature and reliable, but this engine has a strange temper.

Generally speaking, the turbofan engine can significantly reduce the fuel consumption rate due to the external duct, so it is the preferred engine for the third generation fighter, but at the same time, because of this external duct, it leads to a large windward area and large resistance, so the turbofan engine can not reach a higher speed, which is also obvious to all.

Even so, the general engine is still able to push the fighter to a speed of Mach 2, such as the F-15, the F-16 is like this, as for the F-14, because of the blessing of the variable sweep wing, it can even easily reach a speed of Mach 2.35, which is still under the effect of the backward TF30 engine.

However, the Spey engine is an exception, I don't know why, this kind of engine will lose power sharply at high altitude and high speed, which can be vividly reflected in the F4 ghost.

This aircraft, originally a second-generation aircraft, in the United States, has always been equipped with J79 turbojet engine, it can be said that this engine is also a masterpiece of the United States in the field of turbojet engines, power and reliability, are quite good, however, just when the British introduced technology to produce, the British did not like the J79 engine, they replaced it with their own Spey, this is the famous Spey ghost.

It is said that the thrust of the Spey engine is no worse than that of the J79, but after the British replaced the Spey engine, the maximum speed is much smaller than that of the original Ghost.

Therefore, in the end, it was concluded that Spey was not suitable for fighters, because at high speeds, the thrust of Spey engines would be greatly reduced, yes, such an ending.

So in China, I never thought of using Spey as an engine for fighter jets, first of all, the volume is different, and it can't be reequipped for J-7 or J-8, and moreover, even if it can be reequipped, this kind of aircraft can fly to Mach 2, and it definitely can't withstand too small a maximum speed, especially J-8.

As for the newly developed No. 10 project, what is needed is a large thrust with a thrust of more than 12 tons, and Spey's thrust is less than 10 tons, which can only be regarded as a medium thrust with a large push size, which cannot meet the needs.

Therefore, after calculating it back and forth, only the J-7 can be used, and it is precisely because of Spey that the J-7 has come down, otherwise, like other projects, it will definitely be dragged down by the engine, without the engine, nothing can be done.

J-7 is a heavy aircraft, its own weight is very large, so, when designing, it was not expected to fly Mach 2, the maximum speed of the design, only Mach 1.7, of course, this also has to be tested before it can come out, what will happen during the test flight, that is, no one has the bottom in their hearts.

Test pilots, the challenge is this blank, and now, the J-7 is finally going to enter the supersonic test flight.

Qin Feng stepped into the cockpit, and the back cabin was his companion Yang Lin, and at this time Yang Lin had a smile on his face: "Don't worry, Old Chen, just wait for our good news." ”

Yang Lin almost admires Qin Feng's piloting skills, no matter what the situation, Qin Feng can fly this kind of plane back, so there is nothing to worry about now, what about flying at supersonic speed? It's not the same as it used to be, and I thought that the sound barrier would be like a wall, but now science has long crossed the sound barrier.

The front and rear two climbed into the cockpit, methodically preparing for takeoff, strategically despising the enemy, and tactically valuing the enemy, this sentence is also valid when applied to flight, no matter how simple Qin Feng thinks, once he enters the cockpit, he must be serious.

Overhead, the transparent canopy slowly snapped on.