After the inspection in the 320 factory, Qin Feng did not leave with General Lin, but took his wife and children and went back directly to the test flight institute, where he continued his previous mission and tested the J-7E fighter.

The J-7 project is still in the test flight yard to test the flight, but, as far as Qin Feng is concerned, he is indeed more interested in the J-7E, this aircraft is only modified with wings and engines, it has brought a great breakthrough in performance, except for a slight decrease in high-altitude and high-speed interception performance, the maneuverability within the rest of the envelope range is better than that of the J-7II, close to the level of the mainstream third-generation fighter.

Now, the test flight of the J-7E is constantly being carried out, and all kinds of data have also been test-flown out, for example, the stable circling overload is increased by 30%, the instantaneous circling angular velocity is increased by 50%, and the climb rate is increased by 24%, just these few data, it is ecstatic, when driving this aircraft, Qin Feng really wants to compete with the F-16, this time it will definitely not be suppressed all over the ground and there is no way, this is simply the best aircraft, In addition to its insufficient over-the-horizon combat capabilities.

It is impossible to improve the over-the-horizon combat capability of the J-7, and the nose must be changed. Not only the nose, but also the engine has been changed, the overall design has also changed, and there is no longer the appearance of the J-7.

Of course, the cost has also come up, and now, Tu Lao is still running back and forth for the engine.

After another two months of test flight, when the weather was getting colder and colder, Qin Feng unexpectedly saw Tu Lao again.

"I heard that there was a little problem with our test flight, so come and take a look." Tu Lao said to Professor Sha and the others, now he has a tired face on his face, and it seems that he has been running back and forth for a long time.

"Yes, the problem of the flap action cylinder, everyone is working on it." Qin Feng came up and said to Tu Lao: "How is our Super Seven Project going?" ”

Qin Feng can also be regarded as a person who can follow up the super seven project at any time, Qin Feng is naturally very concerned about this project, and now, after hearing Qin Feng's question, Tu Lao said: "Now, I am still choosing the engine." ”

A fighter must have a qualified engine, this pure foreign trade project, the engine is also taken from abroad, Tu Lao always goes abroad, it is the negotiation of this engine.

"What, are Soviet engines bad?" Qin Feng asked, remembering the last time I went, I focused on the inspection.

"The Soviet engine, the thrust is enough, the thrust-to-weight ratio is a little small, and the problem of the receiver is all problems, but the biggest problem is that its life is too short, and I am afraid that our customers will not be satisfied."

The engine on the MiG-29, RD33, is simple and crude, and it is enough, the problem is that the life is too short, although the procurement cost is low, but during the entire life, it is necessary to overhaul so many times, and even have to change the engine once, which will raise the amount at once.

"Is there anything else?" Qin Feng asked.

Others, of course!

"Rolls-Royce has been pitching us the RB199 engine." Tu Lao said: "We also have more contact with the British, so ah, they are very enthusiastic, and they have always been looking forward to us being able to match, but in terms of air intake, we have to change it a lot." ”

"Anything else?" Qin Feng asked.

There are already two kinds of this, and since Tu Lao said that he chose it, I'm afraid there are more than two.

"There is another kind, which is the French, the M88 engine." Tu Lao said: "This engine is small in size, light in weight, good in thrust, and it is the latest, but unfortunately, it is too expensive." ”

One of the biggest characteristics of French things is that they are expensive, and their own fighters are mainly low-cost, but now, if they are too expensive, it will not be easy to sell.

In fact, the most suitable engine is still F404, but unfortunately, even if the Americans give this kind of engine now, we don't dare to ask for it, and a ban at any time may make the whole plan go to naught, and the political risk is too great.

"Speaking of the M88 engine, it's a strange thing for me." Qin Feng said: "The Frenchman's Mirage 2000 fighter can already be regarded as a third-generation aircraft with excellent performance, why not continue to develop this aircraft, on the contrary, start anew and make such a Rafale fighter?" ”

If it is a big country like the United States, it is understandable to study several aircraft at the same time, France is different, only Dassault, a well-known large company, this large company was originally engaged in the Mirage 2000, and even developed the Mirage 4000, a twin-engine heavy aircraft, as a result, to create an almost completely overlapping Rafale fighter.

Due to the continuous exposure in the development stage, trying to sell out, so Dassault's fighter, the data is very detailed, this is a twin-engine medium-sized fighter, using a medium push, in contrast, the Mirage 2000 is a single-engine medium-sized aircraft, using a large push.

If the Phantom 2000 is replaced with an engine like F100 and the third uncle, then its performance will immediately be able to reach a new level, so to speak, this aircraft continues to improve, it should be the most effective way, but the French are so maverick, put the Mirage 4000 aside, but made a gust of wind.

From the perspective of aerodynamic layout, the Rafale seems to be more advanced, with a canard layout, two-rib air intakes, etc., but after all, it does not have an essential gap with the Phantom 2000.

M88, that is, the engine developed by France for Rafale, has these strengths, is it not good to develop an engine with greater thrust for the Mirage 2000?

Hearing Qin Feng's question, Tu Lao nodded: "Yes, I didn't know at first, but after running more times, I figured it out, we can't understand a lot of ideas of Westerners." ”

In the professional words of later generations, it is called a strange brain circuit, or it is wonderful, and the French do this, not for anything else, just to fight for breath.

At that time, the European countries confronted the Soviet Union for a common purpose and united to build fighters together, and after the success of the Tornado fighter, their confidence was greatly increased and they decided to build fighters together.

Originally, France was joined, but the arrogant French want to lead the design, all aspects, must be the decision-making, and the rest can be endured, in terms of engines, the British want to use their own Rolls-Royce engine, and the French want to use their own Snakma engine, this is absolutely not regressive.

As a result, the French can't fight, just slap the table, don't use my engine, then I won't play with you! The French withdrew from the Eurofighter program, of course, to make a similar one themselves, not for anything else, just to fight for breath!