On the Su-33, the small canard on the front end of the side strip will not act as a vortex, because the side strip wing is used to pull the vortex. This canard is a control surface, and its function is to lift the fighter.

head-up moment.

Fighters with an ordinary aerodynamic layout rely on the horizontal tail rudder to climb in level flight. The tail rudder pushes the butt down and the nose of the aircraft is tilted up. However, for a fighter jet with a canard layout, the canards are in front and can directly provide lift.

, tilting the nose of the aircraft, so the duck layout is also called the head-up layout.

It doesn't matter during flight, but when the carrier-based aircraft takes off, the difference between the two will be reflected. In order to make the carrier-based aircraft take off easier, Sukhoi designers added this pair of canards

, adding more head-up moment. (Of course, it will also increase eddy currents. It is said that the lift coefficient has increased by 0.2.)

"The control of this kind of aircraft with a three-wing layout will be very complicated, so Lao Maozi uses digital telex on this aircraft." Luo Yang said: "On the Su-27 we assembled, we still use digital telex.

Analog telex.”

The MiG-29 uses hydraulic control. The Su-27 was originally planned to use hydraulic control, but the plane crashed during the test flight, so the designer installed fly-by-wire control. However, because Lao Maozi's electronic system was backward, so

Still using analog telex.

When it came to the Su-33, the three airfoils could no longer be serviced by analog fax, so Lao Maozi finally upgraded the control system to a digital fax system.

"We should have the technical reserves of digital telex." Qin Tao said: "If we can't understand its flight control law currently, then we can export the control program first and pour it into our new system as it is.

It should be usable for the time being."

Luo Yang opened his eyes wide.

People say that Mr. Qin is flexible and eclectic in thinking. He didn't believe it at first, but now, Qin Tao's words are simply amazing!

During the test flight of the J-10, not a single plane crashed. This was because there were enough wind tunnels and the J-10 had a thorough grasp of the flight control laws of the entire aircraft, and in the future, it could make any changes it wanted.

The J-11 is different. The prototype of this aircraft is the Su-27, and the prototype of the carrier-based aircraft is also Lao Maozi. If they want to fully understand the flight control, it is almost equivalent to going through Lao Maozi's process all over again.

development process.

Of course, there is no need to go through twists and turns. You just need to take the current aircraft model into a wind tunnel, blow it for three to five years, and get all the aerodynamic data. In this way, you can write the flight control program and you will be foolproof.

However, they don’t have so much time, nor do they have so much funds!

Qin Tao came up with a simple method: copy the program directly! Copy the flight control program of the prototype aircraft in front of you, pour it into your own imitation flight control program, and follow the same pattern.

The old man is very particular about knowing what is happening and why. Now he doesn't care about it, so he might as well predict what is happening.

This is a sneaky way, but it still has great reference significance for them. They can imitate the aircraft first, and then slowly understand the control laws, and then further improve the performance of the aircraft.

"If you solve the problem of presence or absence first and improve it later, this approach should be feasible." Mr. Gu also confirmed from the side.

While the 611 Institute was developing the J-10, the 601 Institute was not idle either. They converted one of their J-8 fighters into a stabilizer to test the digital telex system. Therefore, they could completely transplant the hardware.

, what is lacking is mainly software.

"I have to emphasize again that this is only for emergencies. In the future, we must thoroughly understand its technology and master all its principles, otherwise the navy may suffer heavy losses in the future." Qin Tao reminded again.

In order to complete the imitation of the carrier-based aircraft as soon as possible, Qin Tao came up with a bad idea, but he didn't want to create hidden dangers for the navy. This was only temporary, but don't lie down and sleep on it.

"Yes, of course we have to understand it thoroughly." Luo Yang said: "In this way, the first problem is solved, but the second problem is not easy to solve. This aircraft needs an engine with greater thrust."

Salt and moisture prevention at sea are secondary. These can all be solved, but there are still some that are not easy to solve. As the heart of a fighter jet, the engine is one of them.

Although they are both called Third Uncle, their performance is quite different. The one used on naval carrier-based aircraft is AL-31F3. Although there is only one word added after it, there is a big difference.

The take-off and landing of carrier-based aircraft require engines with stronger thrust, and it is not possible to directly transplant the engine from the Su-27.

"This is indeed a problem. Our aviation industry has always been restricted by engines." Qin Tao said: "However, I think this problem is not big. We can continue to purchase."

Since Lao Maozi can sell Uncle No. 3, of course he can also sell Uncle No. 3. This is not a big problem. For the Rulica-Saturn Alliance, the more engines they sell, the more they make.

As for the mature replacement of the turbofan X in the future, Qin Tao is not so confident. In his memory, it seems that the J-15 has not been replaced with the turbofan ten for safety reasons.

"Of course, on the other hand, our imitation of this fighter jet can also use a large area of ​​composite materials to reduce the weight. Although it is an imitation, our technology should also be added to it."

Just like the electric cars of later generations, all aluminum alloy casings are used. Why? Isn’t it because it is too heavy compared to fuel vehicles?

The same is true for carrier-based aircraft. Although this type of aircraft is improved from a land-based fighter, during the improvement process, the wings must be folded and the landing gear must be strengthened, so it will be heavier than a land-based fighter.

There is an increase in weight, but there is also a reduction in weight. Using composite materials on a large area is a significant way to reduce weight.

This chapter is not finished yet, please click on the next page to continue reading the exciting content! Composite materials have been studied in China. Last time Qin Tao went to Rainbow Country, he also hired a group of composite materials experts. Therefore, domestic fighter jets use composite materials.

The amount of materials will definitely increase gradually.

Luo Yang nodded.

Anyway, after you imitate it, the weight will definitely change, and the center of gravity will also change. If it can be adjusted through the use of composite materials, that would be great.

"When we study the airframe structure, we need to be more detailed. In addition to the stress on the main landing gear, the stress on the nose landing gear must also be studied in place. In the future, we may also need an ejection take-off version of the carrier-based aircraft.

"At this time, Qin Tao had already walked to the front of the T-10K-3 that was still intact, looking at its structure and talking at the same time.

Ejection version?

Even Wu Shengli opened his eyes wide. What are you talking about? Isn't it too bragging to say this? We don't even have an aircraft carrier that can take off by ski jump, but we want to reach the sky in one step and have an aircraft carrier that can take off by catapult?

If you only consider the impact of landing, then you only need to strengthen the main landing gear at the rear. The ejection takeoff drags the landing gear at the front, so the front landing gear needs to be strengthened.

Even if the J-10 is made into a twin-engine version, it cannot be put on a ship. This is because it has a ventral air intake, and the front landing gear cannot be connected to the main stress-bearing structure of the aircraft. If it ejects and takes off, the front landing gear will be pulled directly.

Lost.

The overall design of the Su-27 is good. Although the air intake is also from the belly, the air inlets are at the rear on both sides. The main landing gear in the front is connected to the main stress-bearing structure of the aircraft.

In this way, not only can the arresting cable be used to land, but it can also be ejected to take off.

However, even Lao Maozi doesn't have a carrier-based aircraft to eject and take off. We haven't learned to walk yet, so we are about to start running now?

Wu Shengli looked at Qin Tao with doubtful eyes.

"Ski jump takeoff is just a transition. After all, a ski jump aircraft carrier has too high requirements for carrier-based aircraft, and it cannot carry fixed-wing early warning aircraft and anti-submarine aircraft. Its combat effectiveness is greatly reduced. For our navy, in the future, in terms of catapult technology,

A breakthrough will inevitably lead to a transition to catapult take-off. We'd better start preparations now. Of course, if you don't have the energy for the time being, you can also put it aside for a while. In the future, our J-31A may be able to directly

On board the ship."

All the strength of the 601 Institute is used to master the technology of the Su-27. The people who help to develop this carrier-based aircraft are all young people, and the number is not large. Therefore, Qin Tao cannot force it, even if he does not have this energy.

.

Luo Yang shook his head firmly: "We will do whatever the navy needs. Anyway, we will definitely have to calculate the structural strength of this aircraft, which will be included in the calculation of the landing gear. However, this kind of modification project requires high strength.

Steel and precision machining.”

Whether it is the main landing gear or the nose landing gear, if you want to strengthen it, you need advanced high-strength metal.

Qin Tao nodded: "Our domestic related companies will definitely be able to provide qualified metals, and our Mingzhou Group will also provide strong support."

After saying that, Qin Tao climbed up the gangway and looked at the cockpit inside.

"When we are imitating, the electronic system will be replaced, so the entire cockpit will also be updated." Qin Tao continued to give Jiangshan guidance.

The cockpit is too backward, with mechanical instruments everywhere. One level and three levels have become popular in the West. Since it needs to be changed, let’s just change them all.

This is a typical example of standing and talking without pain in the back. Luo Yang smiled bitterly while Mr. Gu explained on the side.

"Mr. Qin, our country is lacking in many aspects. For example, take the cockpit glass used on the Su-27. They use AO-120 plexiglass. The specific material is acrylic.

We cannot develop this kind of material domestically, so even the canopy is imported."

This is another basic industry and material issue. Domestic fighter cockpits have been using three-piece windshields for a long time. Why? It’s not because the materials and technology are not up to standard. Until the F-5A fighter jet was seized from the Monkey Country,

I discovered that people use acrylic single-layer glass, which has low polarization and high light transmittance. This broadened my horizons, and then I started researching it. However, after so many years, I still haven't researched it.

Up to now, even if we can produce it ourselves, we have to import raw materials from abroad and then process them. If they don't sell them abroad, we won't even be able to produce a canopy.

"Yes, we are lagging behind in many aspects, but this backwardness is precisely our motivation. We must face up to the current situation of lagging behind and catch up." Qin Tao also sighed: "What we need is time, five

Years, ten years from now, our technology will be mature."

After saying that, Qin Tao looked at the ejection seat again: "There is a lot of equipment in it, which is related to the safety of our pilots, and we need to pay more attention to it. For example, the ejection seat will be produced for our navy in the future. I suggest you don't be afraid.

Spend money and introduce Lao Maozi's ejection seat."

The speed of the fighter jet is too fast. In the event of an accident, it is impossible for the pilot to parachute by himself. He can only use the seat to take the pilot out of the cockpit.

In this regard, the most advanced one is Lao Maozi's ejection seat. Not to mention actual combat, it has saved pilots' lives countless times at air shows.

In a normal flight attitude, there is no difference between the ejection seat, but in special circumstances, such as when the aircraft is upright or even upside down, whether the ejection seat is advanced or not can play a big role.

In later generations, an excellent naval carrier-based aircraft pilot had an accident during training. Qin Tao still remembered it. If the aircraft had been equipped with Lao Maozi's ejection seat at that time, he would not have been in that state.

Life-threatening.

After all, Lao Maozi's ejection seat can turn. Even if it is turned upside down, it can still turn and continue flying into the sky, providing the pilot with a high enough height to open the parachute. This seat is like a small spacecraft.

generally.

This chapter is not over yet, please click on the next page to continue reading! Even if you spend a little more money, you must protect the pilots. After all, the takeoff and landing of naval carrier-based aircraft pilots is full of dangers.

"Yes, when we were negotiating, Lao Maozi refused to export the technology related to the ejection seat to us." Mr. Gu also sighed: "They just want to sell us the ejection seat to make more money.

The performance of our domestic ejection seats is incomparable to that of Lao Maozi."

"If only we had Lao Maozi's ejection seat technology!"

Hearing this sigh, Qin Tao suddenly thought of something, and he was actually fixed in his mind!
To be continued...