Babylonian Empire

Page 334

"Elder Liang, I heard that you are leaving?" Zhang Feng got the news that Elder Liang was leaving when he came here.

"Yes." Elder Liang said, "Our work has been completed, and the production line is running normally. Naturally, we should go back."

Zhang Feng was also very moved. China, a big country in the East, has done a good job in providing technical assistance to Iraq without any concealment. This is in stark contrast to the personnel from the United States. In their work, both sides Established a deep friendship.

"There is an old saying in your country that there is always a banquet in the world. We are grateful for your help this time." Zhang Feng said, he spoke fluent Chinese.

"Where is it?" Liang Lao said, "We technicians have also learned a lot of knowledge when we come here, especially cruise missiles. Our personnel are really eye-opening, and the precision is ridiculously high."

"This accuracy is not the highest yet. After GPS is widely used in the future, the accuracy can be greatly improved." Zhang Feng said.

"GPS?" Mr. Liang has never heard of it. Although the predecessor of GPS, the Meridian satellite positioning system, has been used in the US military, and GPS is still in the final stage of demonstration, in this world, except for Zhang Feng, who knows this This kind of thing is of great use in later generations, and no one else knows about it.

"It's the satellite positioning system." Zhang Feng said: "But this technology is not yet mature."

GPS?Mr. Liang seemed to have a vague impression in his mind, where he had seen it before.

"After Mr. Liang returns to China, please convey my greetings to Mr. Tu and others. If they have any difficulties, please come to me." Zhang Feng said.

Super 7, the main foreign trade fighter in the future, I don’t know how Tu Lao is doing, Zhang Feng is looking forward to it, this fighter can be produced in China a few years in advance.

With the J-[-] that lags behind in high altitude and high speed as soon as it is produced, China's future sky cannot be supported. When this fighter is really developed, the Chinese Air Force will definitely equip it.

Zhang Feng himself invested in Chengfei, provided technical solutions, and contacted an American company to provide avionics, all of which were aimed at making this kind of fighter take off.

It was agreed at the beginning that it would take half a year for Chengfei to produce the airframe, and then install avionics at the aircraft factory in Iraq. Now, I don't know how Tu Jida and others are doing.

China, Huangtianba, Qingyang District, Chengdu, where there is a large military enterprise, Chengdu Aircraft Company, formerly known as Factory 132.

History goes back to April 1956. According to the agreement signed by the Chinese and Soviet governments on the Soviet Union’s aid to China’s 4 key construction projects, the two governments officially signed the agreement on the second batch of the Soviet Union’s assistance in the construction of China’s aviation industry. 156 Factory construction project is one of them.In May of the same year, the Second Ministry of Machinery Industry instructed that the new fighter factory code-named 19 Factory will mainly produce J-132 fighter jets.

After several historical turmoil, it became the Chengdu Aircraft Company with an annual output of 200 J-7 fighters, referred to as Chengdu Aircraft Corporation.One of the R&D institutions is the 611 Research Institute.

However, the J-21 fighter based on the MiG-7 can no longer meet the needs of the future sky. Under the leadership of the chief designer Tu Jida, the J-7 has been improved, but the performance improvement is limited.

Moreover, the country's focus is on Shenfei's J-8 project, and Chengfei has received very little investment.

Under such circumstances, a friendly country in the Middle East began to inject funds into Chengfei, hoping to improve an advanced improved J-7 suitable for future air combat, code-named: Super 7!

The time is very tight, only half a year, but under the leadership of Tu Jida, the progress is also very fast.

Although both the nose and the wings have undergone major changes, the air intake from the nose has been changed to the belly intake, freeing up the precious head to install a large radar, and the wings have been changed to double delta wings with leading edge maneuverable flaps , although these are all new items, they have been verified to be completely suitable after going through the blowing tunnel!

His Excellency Qusay in Iraq is so amazing!Even Tu Keda sighed, that guy seems to know everything!Moreover, it is even more powerful than those who have worked on aircraft design for half their lives.

They didn't know that Qusay had plagiarized their own fruits of labor and just told them a few years in advance. Otherwise, they would eventually walk on this path after groping their own way. time.

It took two months to finish blowing the wind tunnel and confirmed that there is no problem with the aerodynamic layout. In particular, a small fixed canard was added to form a vortex for the wing and provide additional lift to overcome the problem caused by the installation of radar. The problem of shifting the center of gravity forward.

This set seems to be tailor-made for Super 7!Tu Keda was very happy.

After blowing the wind tunnel, it took them two months to build three prototypes. The speed is so fast that people can hardly believe it.

The rear fuselage is exactly the same as the J-[-], so it can be completely copied, but the modified front fuselage is a bit time-consuming, and, as a fighter for test flight, it does not use the design of the integral fuel tank of the wing proposed by Qu Sai, which makes the processing technology made easy.

Everything is for the fighter plane to fly as soon as possible!As long as the airframe meets the design requirements, and then flies to Iraq, equipped with advanced fire control, it will be the nirvana rebirth of J-7!

Winter has already entered. Although the climate in Chengdu at this time is not as cold as the winter in the north, it is still relatively cold. Moreover, the Sichuan Basin is relatively humid, wet and cold, but the people on the runway are full of fiery hearts.

On the runway, a fighter plane, which is different from all Chinese aircraft, is doing the final inspection before takeoff.

Viewed from the rear fuselage, it is exactly the same as the J-7, but the front is quite different. The most eye-catching thing is the pointed head, and the air intake below the belly seems to have a big mouth. It is also different from other fighters. From the front, it looks a bit like an F-16.

After all the preparations were completed, the test pilot Lei Qiang walked towards the fighter plane.

Although Lei Qiang is not yet 30 years old, he has grown into an experienced pilot who has flown many kinds of fighter jets and has rich experience. The older generation of test pilots Ge Wenyong and Jiang Deqiu are all in the Shenfei. 8. Lei Qiang was honored to be the first test pilot of Chao-7.

However, compared to Lei Qiang, who has flown many J-7 sorties, he is full of confidence in the test flight, and will not encounter too many problems in this flight.

Because it's just a change of shell, the inside of this fighter is still the same as the J-7's hydraulic operation, and the instruments are also the J-7's instruments directly from the production line, and various systems are newly designed. In addition to the shell, it is the extra leading edge motorized flap.

Advanced avionics equipment can only be installed after the airframe has completed the test flight.

However, Tu Jida is full of confidence in this test flight, because the experimental data of the blowing tunnel proves that the flight quality of this aircraft will have a qualitative leap.And yesterday's sliding experiment fully demonstrated this point.

The rolling test is divided into three steps: low-speed rolling, medium-speed rolling and high-speed rolling.

Low-speed taxiing mainly depends on the flexibility of the aircraft taxiing on the ground, because there are requirements for the ability of fighter jets to taxi on the ground, such as turning radius, taxiing speed and other indicators.After the plane takes off and lands, the distance between the apron and the runway can be determined by ground tractors, or the plane can taxi by itself. At this time, the plane is a tricycle.The low-speed taxiing of the Chao-7 can almost be omitted, because the rear fuselage is exactly the same as that of the J-7, and these indicators are the same.

The speed range of the medium-speed taxiing test is about 60 to 100 km/h. This taxiing test is mainly to see the aircraft's deviation correction ability.That is, the plane is on the runway and taxis forward only by the thrust of the engine.If the plane leans to one side, it means that there are serious problems with the plane. For example, the asymmetrical shape of the plane leads to asymmetrical aerodynamic forces. For example, there is a problem with the braking system of the landing gear. During yesterday’s taxi, this did not happen to the Super-7.

The last is high-speed taxiing, and the final speed will reach the critical speed before take-off. Through the high-speed taxiing experiment, it is confirmed that the aerodynamic force of the aircraft is indeed in line with the design value, which shows that the aircraft can fly. An important step is to lift the front wheel during the high-speed taxiing stage. Let go of the experiment again.This experiment of Chao-7 is very important, because the front fuselage has been redesigned. Although there is no problem with the blowing hole, the nose is heavy after all. Whether it can fly or not has to pass this experiment, but it is also very good. success.

Lei Qiang stepped into the fighter plane, skillfully completed the preparations before take-off, and started the turbojet engine at the back.

Then, he released the brakes, and the Super-7 was on the runway, spread its wings, taxied, and took off!

Chapter 375 Turbofan 6 and Yun [-]

Chao-7 was taxiing on the runway. Lei Qiang glanced at the familiar instruments out of the corner of his eye. The speed had reached the take-off speed. Yesterday, according to this speed, he pulled the control lever backward, and the plane Then I raised the nose of the aircraft, but just raised it yesterday, then put it down again, but today, when I raised it, it will directly pierce the sky.

Lei Qiang pulled the control lever backwards, and felt a powerful lift. Unlike the original J-7, this modified fighter, although heavier than the original one, did not increase the thrust of the engine. , On the contrary, it feels more sensitive than before!

Although it can't achieve the same high angle of attack take-off capability as foreign fighters, the super-7's take-off process is so smooth, it still makes Lei Qiang feel a burst of excitement, which is a bit like a fighter jet!

Lei Qiang glanced sideways from the cockpit, and knew that all this was the result of the modified wing.

Compared with the original J-7, it uses double delta wings and leading edge maneuvering flaps, which is an important way to improve the maneuverability of the Super-7.

The so-called leading edge maneuverable flap is located at the leading edge of the outer wing of the wing, and can rotate around the rotating shaft formed by four joints, and the downward deflection angle is 25 degrees.After the maneuvering flap is retracted, it is sealed by the stainless steel sealing sheet at the end surface of the upper skin of the flap and the end surface of the wing skin. move.In this way, the leading edge of the wing can be bent, which can realize the maneuvering load of the wing, increase the lift-to-drag ratio at high angles of attack, improve the flow characteristics of the airfoil at high angles of attack for fighter jets, and reduce the downwash at the horizontal tail. It can also better solve the problem of reduced lateral stability of the aircraft.While reducing the resistance at high angles of attack, it also improves the buffeting boundary, especially the improvement in hovering performance.

As soon as it took off, Lei Qiang felt the benefits brought by the new wing, and the maneuverability was greatly improved!The tiny fighter just got even more nimble!

For the first test flight, it was only a circle around the airport, three turns and then flew back.

When the plane climbed to 500 meters, Lei Qiang pulled the lever and pushed the rudder to make a turn to the right.

It was just an ordinary turn, and Lei Qiang had fallen in love with this plane before he could fly the plane to the extreme.

Because, in the turn just now, the angular velocity was 14 degrees per second, which is already the maximum turning angular velocity of the J-7II!

In close combat, the greater the turning angular velocity, the easier it is to point the nose of the aircraft at the enemy aircraft as soon as possible in a horizontal hover, and win the opportunity to launch missiles!And the current Super-7, compared with the prototype, has increased by nearly 50.00%. It seems that it should not be a problem to reach the design's maximum turning angular speed of 22 degrees per second. This hovering speed has already surpassed the F-16 Fighters, even in close combat with F-14, will not be at a disadvantage!

The maneuverability of close combat has already been demonstrated. If the nose is equipped with a suitable radar, the combat effectiveness of the Chinese Air Force will increase exponentially!

Lei Qiang has full confidence in the fighter plane under his crotch.

(In later generations, the performance of the J-7E, which has the same improvement as the Super 7 in the text, has been greatly improved, and its close-range combat performance is no less than that of the third-generation fighter jets. Pakistani pilots even call it a small F-16!) Lei Qiang was driving the Chao-7, and after flying forward, before entering the second turn, he finally couldn't bear it, and skillfully pressed the control lever, making a rolling motion.