Siheyuan starts from a good life

"Dong-dong-clang, dong-dong-clang. The lively sound of gongs and drums swept away the severe cold of winter.

Shengjing has now entered November. Although it is much warmer than Bingcheng, the temperature outside is still around minus 11 degrees Celsius. Fortunately, the heating inside the house is also quite powerful.

Amidst the sound of gongs and drums and the cheers of everyone, a silver war eagle was pushed out from the hangar.

Seeing the plane coming out, Mr. Xu, who was standing next to Jiang Yan, had tears in his eyes.

"Comrade Jiang Yan, did you see that? Our efforts were not in vain."

"It's not in vain." Jiang Yan looked at the war eagle and said aloud.

This aircraft is the new Zhan-6 aircraft developed under the leadership of Mr. Xu. The difference from the old Zhan-6 aircraft is that this aircraft looks more slender. Although the air intake is still in the nose, the nose has become The nose air intake form of the shock cone.

The biggest benefit of this type of air intake is that the oblique shock wave generated by the shock cone compresses and decelerates the oncoming airflow. At the same time, the forward and backward movement of the cone changes the airflow interception area at the inlet port to achieve the intake air flow rate. The best match between flow rate and engine air intake demand ensures that the engine can work stably under various flight conditions.

Originally, such a design would appear on my country's follow-up Zhan-7 fighter jet. But with Jiang Yan's participation, Jiang Yan feels that if our Zhan-6 aircraft adopts this air intake method, its performance will be greatly improved.

Although the engine of the current Zhan-6 aircraft is not as good as that of the later Zhan-7 aircraft, the Zhan-6 is a twin-engine aircraft, and the combined thrust of the two engines is still much higher.

However, the reason why Jiang Yan did this is that, according to what Mr. Xu said, the basic model of the Zhan-7 aircraft in the later period was still the nose air intake, but the subsequent improved models, the first one used the semi-circular submandibular air intake, which is also the key point. project.

Jiang Yan estimated that once they knew the benefits of Yingying Sauce Wool, they would probably follow this path and never return.

This situation is something Jiang Yan is extremely happy to see. Combining all the advantages of Mao Xiong and Ying Jiang is the most correct path for flower growers.

Combining the strengths of both companies works for me. is the most correct thing. Of course, we must have our own ideas and design methods, but this is the first step.

The design of the aircraft uses a large number of new alloys, which directly reduces the weight of the aircraft by 20%. This reduced weight is directly allocated to aviation fuel and airborne weapons. In addition, the introduced air-to-air missiles are also manufactured by our country. Come out, new missile pylons have been developed and installed on combat aircraft.

Suddenly it was said that the current air-to-air missiles are relatively close, but they are still missiles after all. After all, there are missile pylons that can be launched, which lays the foundation for the future.

The reason why this new Zhan-6 was developed so quickly is thanks to Mr. Lu.

You must know that General Engineer Lu did not specialize in researching the fifth fighter. He developed the Zhan-12 aircraft known as "Li Xiangyang in the Air".

The Zhan-12 is designed to fight guerrillas with enemies in the vast sky, so its design pursues small size, simple production, and fast speed. The volume and weight of the aircraft must be sufficient to be loaded on a truck and moved at any time. It can take off and land on ordinary roads or even dirt roads. It can take off from various places where the enemy does not expect and attack opponents; because it is necessary to carry out guerrilla warfare, the aircraft's Losses can be huge, requiring a large number of replacement fighters, so they must be produced quickly and easily.

The highlight of this aircraft is quite outstanding. It uses a single turbojet 6B engine and can actually fly up to close to M1.4. Compared with the J-1.355, which can only fly around M6, this data is quite good. And this is the speed that can be achieved with a design that highlights combat performance.

With the intervention of a talented aircraft designer like him, the improvement work has been accelerated a lot.

The biggest improvement is the wings of the original Zhan-6 aircraft.

Originally, the Zhan-6 had a very large sweep angle, but it could only be considered a supersonic fighter. To put it simply, the wings of the Zhan-6 were not ideal due to technological limitations of the times. The lift-to-drag ratio was not high, and it was prone to stalling. Therefore, although it has a 58-degree sweep angle, it can only barely solve the supersonic performance. It is far less suitable for supersonic flight than the 21-degree delta wing of the later MiG-57.

At the same time, the F100 Super Sabre, with its 45-degree thinner swept-back wings, could also fly up to M1.3.

However, Jiang Yan’s new wing design draws on the design of the F100 wing, making the whole aircraft excellent aerodynamics. Although the aerodynamic appearance has not changed much, it is still a dual-engine design. According to Jiang Yan’s calculations, it is still possible to achieve the M1.4 design value, and due to the improved lift-to-drag ratio, all performances are likely to be better than those of the J-6, making it a cost-effective fighter close to the third generation of American standards.

It can be said that if the New Zhan-6 aircraft continues to improve according to the domestic scientific research level and changes the air inlet to the air intake on both sides of the nose radar cabin, it can obtain a highly maneuverable American standard 1-generation fighter with a thrust-to-weight ratio of ≥2.5 and extremely high speed. It can reach M1.4~1.5, and can continue to be improved until the 90s to obtain medium-range missile interception capabilities, thus making up for the shortcomings of the Zhan-7 series.

Then again, since after the MiG-19 and F100 in the last century, all aviation powers have focused on the development of 2 times the speed of sound fighters, so it is difficult for fighters with M ≤ 1.6 to get real attention, and there are not many models.

However, the current general environment is still the same, and Jiang Yan alone is not enough to change it, so he quietly changes a little bit when he knows it, hoping that quantitative changes will lead to qualitative changes.

"Look, the plane's taxiing experiment is about to begin." Mr. Xu patted Jiang Yan, who was in a daze.

After Jiang Yan came back to his senses, he looked up and saw the plane starting to accelerate.

The ground taxiing of the aircraft is actually a verification test that must be carried out before the aircraft makes its first flight. Through ground taxiing, some problems in the design and manufacturing of the aircraft are confirmed and solved, which lays the foundation for the test crew to become familiar with the aircraft and achieve a safe first flight. Base.

Ground taxiing is divided into three categories: low-speed taxiing, medium-speed taxiing and high-speed taxiing. For aircraft, different types of ground taxiing also have strict requirements on the speed of the aircraft.

Generally speaking, ground taxiing mainly verifies whether the aircraft's body structure is solid under taxiing vibration; whether each system is working properly; whether the aircraft's braking efficiency meets the requirements, including the aircraft's parking braking function, anti-skid function and emergency braking function; and The taxiing motion characteristics of the aircraft, such as the ability to turn, the ability to accurately maintain straight taxiing, and the ability to correct curved taxiing, etc. When taxiing at high speed, the aircraft's nose-wheel steering ability should also be checked, including the aircraft's ability to maintain balance under such conditions.

The plane was taxiing very fast, and it stopped within a few minutes. At this time, the experimenter waiting aside quickly ran over.

After waiting for a while, the cheers came. When you heard this sound, you knew that the ground sliding was a complete success.

However, there is still a long way to go before the aircraft is officially finalized.

But all this is not that important to Jiang Yan. The success of the aircraft taxiing experiment means that Jiang Yan will leave here and return to Sijiu City. It is a pity that there is no way to see the takeoff of this war eagle with his own eyes. .