Still have some ideas? Marcel didn't know where the Lord of Cusay in front of him learned these things, and even he, who had always been at the forefront of science and technology, didn't think of these things, but as soon as the other party said it, he suddenly understood, isn't that what it is? Not to mention the use of vortex, it is this positive lift that can definitely improve the maneuverability of the aircraft by a notch.

In history, it was not until the Mirage 2000-5 fighter that a small canard wing was installed in front of the delta wing to improve the lift of the wing, not the control surface, Zhang Feng was full of confidence in the Mirage 4000, and naturally hoped that its combat capability was as strong as possible.

Thinking about the fresh ideas that may still pop up in the other party's head, and even if the price is reduced to 40 million US dollars, in fact, Dassault still has a profit, thinking that the fighter surname can be improved, even more than the Americans and the Soviet Union's heavy fighters, even if it is 30 million, Marcel will have a feeling in his heart that he is ready to move.

"Okay, 50 million, 800 million dollars in production lines." Marcel directly lowered the price of the production line, hoping to be open and honest, and the other party could say more construction projects.

Zhang Feng didn't like it, the first one is that there are no canard wings, and the maneuver surname of the medium and low altitude cannot be improved, and the second is the air intake of the Mirage 2000, in order to take into account the surname of high altitude and low altitude, in the air intakes on both sides, a sharp shock cone is installed, which is somewhat similar to that of the MiG-21, except that the MiG-21 is intake at the head, a shock cone, and the Mirage 2000 is an air intake on both sides, each with a shock cone.

During the flight, the air should enter the engine smoothly so that it can be in the best working condition. If the air flow is sometimes strong and sometimes weak, the engine is prone to accidents at high speeds. Without air, the engine will idle and the aircraft will easily stall. If there is too much air, the engine will easily flutter.

Simply put, if the air inlet is fixed, then when the aircraft is fast, the air will be too much, so it is necessary to set up a device at the air inlet to reduce the air intake after the speed is large.

Secondly, when the aircraft flies at supersonic speed, then, the air coming from the air, relative to the aircraft, is also supersonic, and the air needs to be reduced below the speed of sound.

At this time, the other third-generation aircraft, F15, F-18, Su-27 and the like, almost all used a rectangular air intake with a movable baffle to achieve it, which removed the bulky shock cone, which was conducive to improving the maneuverability.

There are two ways to remove this shock cone, one is to use a swept double-bevel supersonic air intake, also known as the Caret air intake, which is used on the improved version of the F-18, this is the forefront of science and technology, and it is more suitable for supersonic fighters, but unfortunately, it is not suitable for the Mirage 2000 with air intake on both sides.

There is also a DSI air intake that has just been put into practice in later generations, which is used on the latest F-35 fighter jets in the United States.

DSI intake, the most obvious appearance is an irregular semi-circular bulge, the upper and lower sides of the bulge almost follow the upper and lower lip of the airway glued together, can squeeze the surface layer of airflow out of the intake, instead of the role of the shock cone, DSI inlet is very conducive to the stealth of the aircraft, the prominent bulge can shade the engine, the front blade of the turbofan engine is the strongest radar reflection source. Although the supersonic surname of the DSI intake tract has not been substantially improved, compared with other inlet tracts, the advantages are weight loss and stealth surname.

However, what kind of thing this thing is, Zhang Feng is not very clear, after all, these things are already the most advanced things in the world, Zhang Feng can only describe, but he thinks that it should not be very difficult, because after using this kind of thing on the American F-35, following the air intake of the Thunder Dragon, it has become like this, and some people on the Internet have depicted the appearance of the J-10B using this air intake.

Although this thing is completely usable, however, Zhang Feng obviously hopes too much this time, and few people will believe it until no one sees it, a bulge can solve the problem of the rather troublesome air intake in the design of the aircraft?

Looking at the old man Marcel, who had the strongest connection ability, had a look of disbelief, Zhang Feng felt that the thing he took out was a little too early.

Aerodynamics is a rather complex science, and in many cases there is no formula to calculate, it takes experiments, blowing tunnels, to know the effect, Marcel does not know if this young man of Kusai is talking about it, so it is normal that he does not believe it.

It wasn't until a few years later, when the Mirage 2000, equipped with DSI air intakes, took off from the test flight center that the masters of aviation were amazed by this bulge, but Dassault was silent about it.

But the Mirage 4000 finally used a shock cone, because of the limited ability, Dassault could only optimize the drum pack at about Mach 1.4, and the heavy air supremacy fighter needs to have the best surname at all speeds, not to mention the twin Mirage 4000, I don't care about the increase in weight brought by this shock cone, which is also the result of Zhang Feng's unintentional insertion.

As a layman, Zhang Feng's understanding of various technologies in later generations is actually not very thorough, or rather, it is just the results seen in military magazines, and the real one is always the secret of every company.

Zhang Feng put forward some other ideas, such as, helmet sights, infrared detection devices, these Su-27 standard equipment, can be studied on the Mirage 4000 similar things, infrared detection devices can be used when their own radar is interfered with, or need to remain silent, can not turn on the radar, and helmet sights, can greatly improve the pilot's reaction speed, as long as the eye can see, the missile can lock onto the target, in close combat, very important.

Launching a missile one second earlier is the difference between life and death.

"Your Excellency Qusay, we have been amazed by your wisdom and did not expect you to be able to come up with so many useful insights." Marcel said.

So many insights? If it weren't for the fact that I didn't have the ability, I could only let Dassault develop a heavy fighter, these things, I don't want to say these things, but Zhang Feng knows that although this time the agreement was negotiated at a very high price, but for the Iraqi Air Force, it is definitely a great progress.

After the reception, Sarah was still in shock, sitting in the Mercedes Benz, Sarah asked: "Your Excellency Qusay, the deal you negotiated this time is worth billions of dollars, and now Iraq, does it have so much money?" ”

Sarah knows that the deposit for the last cooperation between Iraq and the United States Northrop was paid by Kuwait and Saudi Arabia, but it is impossible for the two countries to advance Iraq again and again!

"To be honest, I don't really have that much money right now." Zhang Feng said.

"Then you're still so rich? There are already F-20 fighters, do you still need this valuable Mirage 4000? Sarah asked.

"Remember, you are my translator, not my boss, and these things must be kept secret." Zhang Feng said.

Sarah twisted her head outside and stopped talking, originally thinking that she could ask her uncle to raise more funds to provide Iraqi loans, but she didn't expect this guy to be uncommon!

Money, with that brother of yours, I'm still afraid that I won't have money? Zhang Feng secretly thought, however, he already has a direction for the recent funds.

Zhang Feng closed his eyes, and a huge missile appeared in his mind.

PS: Thank you to Billyboy and Drunken Smile for the tips!

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