"Knock knock, knock knock. The lively sound of gongs and drums swept away the bitter cold of winter.

Shengjing has now entered November, although it is much warmer than Bingcheng, but the temperature outside is still about minus 25 °C, but fortunately, the heating in this room is also quite powerful.

Amid the sound of gongs and drums, and the cheers of the crowd, a silver war eagle was pushed out of the hangar.

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

"Comrade Jiang Yan, do you see it? Our efforts have not been in vain. ”

"It's not in vain." Jiang Yan looked at this war eagle and said out loud.

This aircraft is the new Zhan-6 aircraft researched by Mr. Xu, and the difference from the old Zhan-6 aircraft is that this aircraft looks more slender, although it is still the nose air intake, but this nose has become the nose intake form of shock cone.

The biggest advantage of this kind of air intake is that the oblique shock wave generated by this shock cone compresses and decelerates the oncoming airflow, and at the same time, the air interception area of the inlet mouth is changed by moving the cone back and forth, so as to achieve the best match between the intake air velocity, flow rate and engine intake demand, and ensure that the engine can work stably under various flight conditions.

Originally, such a design would have appeared on the follow-up war-7 fighter in our country. However, who called Jiang Yanfen to participate, Jiang Yan felt that if our Zhan-6 aircraft adopts such an air intake method, the performance will be greatly improved.

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

However, the reason why Jiang Yan did this is that through Mr. Xu's explanation, the basic model of the later Zhan-7 aircraft is still the nose air intake, but the subsequent improved model, the first one used is the submandibular air intake semicircle, which is also a key project.

Jiang Yan estimated that once they knew the benefits of Eagle Sauce Wool, it was estimated that they would never return along this road.

This situation is what Jiang Yan is extremely happy to see, combining all the advantages of Mao Xiong and Eagle Sauce, this is the most correct path for flower growers.

Combining the strengths of both worlds for my use. It is the most correct thing, of course, there must be our own ideas and design methods, but this first step is the best.

The design of the aircraft uses a large number of new alloys, which makes the weight of the aircraft directly reduced by 20 percent, and these reduced weights are directly distributed to aviation fuel and airborne weapons.

Suddenly, it was said that the current air-to-air missiles are relatively close, but they are still missiles, after all, there are missile pylons that can be launched, and it is not necessary to lay the foundation for the future.

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

You must know that this chief engineer of the army is not specifically researching the fighter of the fifth master. He developed the Zhan-12 aircraft, which is known as "Li Xiangyang in the air."

The design purpose of the Zhan-12 is to fight guerrilla warfare with the enemy in the air in the vast sky, so its design pursues small size, simple production, and fast speed. The volume and weight of the aircraft must be able to move at any time when loaded on a truck, and it can take off and land on ordinary roads or even dirt roads, take off from various unexpected places of the enemy, and strike opponents; Because in guerrilla warfare, the loss of aircraft can be very large, and a large number of replacement fighters are required, so it must be able to produce them quickly and easily.

The highlight of this aircraft is still quite prominent, it uses a single turbojet 6B engine, and it can fly up to close to M1.4, compared to the J-6 that can only fly to about M1.355, which is quite good. And that's at a speed that can be achieved with a design that accentuates fighting performance.

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

One of the biggest improvements was the wing of the original Battle-6 aircraft.

Originally, the Zhan-6 had a large sweep angle, but it could only be regarded as a supersonic fighter, and in a nutshell, the wing of the Zhan-6 was not ideal due to the limitations of the times, the lift-to-drag ratio was not high, and it was easy to stall, so although it had a 58-degree sweep angle, it could only barely solve the supersonic performance, which was far less suitable for supersonic flight than the 57-degree delta wing of the later MiG-21.

The contemporaneous F100 Super Sabre, with a 45-degree thinner swept angle wing, can also fly to the M1.3.

However, Jiang Yan's design of the new wing draws on the design of the F100 wing, so that the whole aircraft is aerodynamically excellent, although the aerodynamic appearance has not changed much, it is still a twin-engine design, according to Jiang Yan's calculations, it is still possible to reach the M1.4 design value, and due to the improvement of the lift-to-drag ratio, the performance can be better than the J-6 with a high probability, becoming a cost-effective fighter close to the third generation of the American standard.

It can be said that the new Zhan-6 aircraft, in accordance with the level of domestic scientific research, if it continues to improve, the air intake will be changed to the air intake on both sides of the nose radar cabin, and the high-mobility American Standard 2.5 generation fighter with a thrust-to-weight ratio of ≥1 can be obtained, and the top speed can reach M1.4~1.5, and it can be continuously improved until the 90s, and the ability to intercept medium-range projectiles can be obtained, so as to make 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 are focusing on the development of 2 times the speed of sound fighters, so it is difficult for the M≤1.6 fighter to get real attention, and there are not many models.

However, the current environment is still like this, Jiang Yan alone is not enough to change, so he quietly changed a little when he knew, in anticipation of qualitative changes caused by quantitative changes.

"Look, it's almost time for the plane taxiing experiment." Mr. Xu patted Jiang Yan who was in a daze.

Jiang Yan, who came back to his senses, looked up and saw that the plane was beginning to accelerate.

The ground taxiing of the aircraft is actually a verification test that must be carried out before the first flight of the aircraft, and some problems in the design and manufacture of the aircraft are confirmed through ground taxiing, and they are solved, so as to lay the foundation for the test aircraft team to be familiar with the aircraft and achieve a safe first flight.

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

Generally speaking, ground taxiing mainly verifies whether the fuselage structure of the aircraft is firm in the taxiing vibration state; whether the systems are working properly; Whether the braking efficiency of the aircraft meets the requirements, including the aircraft's shutdown braking function, anti-skid function and emergency braking function; There are also the taxiing motion characteristics of the aircraft, such as the ability to turn, the ability to maintain a straight taxi, and the ability to correct curved taxiing. When taxiing at high speeds, also check the aircraft's ability to lift the front wheels, including the ability of the aircraft to maintain balance in this situation.

The plane taxied very quickly, that is, it stopped in a few minutes, and the experimenters who were waiting on the side quickly ran over.

After waiting for a while, the cheer came, and when you heard it, you knew that the ground glide was a complete success.

However, this is still a long way from the official finalization of the aircraft.

However, all this is not so important to Jiang Yan, the success of the plane taxiing experiment means that Jiang Yan has to leave here and return to Sijiu City, there is no way to see the take-off of this warhawk with his own eyes, and it cannot but be said that this is a regrettable thing.

(End of chapter)