Qin Feng was fooled back by Tu Lao.

Because of Lao Zhao's matter, Director Zhou gave his team a holiday, so that everyone can relax and relax, and they can't always do it day and night, and Tang Gang is very powerful now, and he can already provoke the girder of the Jianjiao Seven Test Flight, the recent subjects are all normal subjects, and there will be no danger, so Qin Feng took Gu Tingting and Xiaohutou back to Chengdu together, this is also to see his sister, this summer, my sister said that she participated in a project, and she didn't plan to go back, I haven't seen my sister for several months, I can see you this time.

The last time he negotiated with Grumman, Qin Feng didn't catch up, and on the train, he could only listen to Tu Lao talk about the situation at that time, basically, the F404 engine was selected, and Grumman gave more detailed information, and at the same time, there was also the situation of the radar.

However, Grumman's idea of wanting to be the main contractor was still revealed, and everyone frowned at this idea, and there was nothing else, but they could only hurry up.

During World War II, the Vought Aircraft Company was famous, and the F4U fighter was their masterpiece, which was the main fighter over the Pacific Ocean, but after the end of World War II, the Vought Aircraft Company was not as good as other aircraft companies.

However, even in the later generations, the company has not gone bankrupt, they have changed to contracting, specializing in taking over business from other aircraft companies, OEM production, what Boeing's passenger aircraft wings, General Electric's engine compartment, etc., in short, the business is still good, after all, it is necessary to live.

Although the current Walter Company does not have any products on hand, it is also an aircraft company of the Americans, and now it is also a complete aircraft company.

Since dealing with the Americans, Tu Lao has slowly figured out a little way, and the manufacturers of various fighter parts in the United States cannot directly export to the outside world, and the best way is to find a complete machine manufacturer to negotiate, and it is easy to do the work of the US Congress.

After arriving in Chengdu, just in time for the arrival of the people from the Walt Company, the representative of the other party was the engineer Skoleman, the American looked very tall and loud, and when the big hand shook hands with Tu Lao, he was full of strength, and he thought he was here to compete.

"We are here this time, mainly for your Jian-7 improvement project." Entering the conference room, Skoleman went straight to the point: "We suggest that you use the Pratt & Whitney PW1120 engine as a new backup engine for the J-7. ”

It seems that many companies in the United States are also interested in the products of another company and want to get a piece of the pie.

In the United States, Pratt & Whitney and General Electric, two large aero engine companies, have been competing, and now the F100 and F110 are also two companies competing, but I haven't heard of what PW1120 engine they have?

What kind of engine is this?

It seemed that he knew that everyone didn't understand, and Skoleman immediately introduced it to everyone: "To put it simply, this engine is the core of the F100 engine. ”

What, the core machine of the three generations of big push? When he heard the other party's introduction, Qin Feng immediately became excited in his heart, this is the most needed thing in China, F100, that is the most advanced turbofan engine, it is simply alien technology, and this engine, the most important thing is, of course, the core machine.

However, the core machine just has no external ducts, that is, this is a turbojet engine?

Pratt & Whitney spent a lot of money to come up with the F100 engine, and of course wanted to make this engine more extensive, just after their engine matured, they saw a new opportunity.

Israel is working on the LAVI fighter project, which needs an engine with excellent performance, but due to the diameter problem, the F100 is too large, so they simply removed the outer duct and slightly improved it, and launched such a turbojet simplified version.

Although it is turbojet, it uses the technology of the third-generation turbofan engine, which is quite fuel-efficient, definitely more fuel-efficient than the M53 engine of the Phantom 2000, and at the same time, the thrust is also good, with a maximum afterburner thrust of up to 9.3 tons, far exceeding the 8 tons of thrust of the F404.

Now, I heard that there is a project in Pakistan, so they took this engine and installed it on the J-7, which can definitely change the J-7 shotgun.

However, this is the core machine of their most advanced third-generation turbofan, and the secret cannot be known to Chengdu, and Skoleman did not take any information at all, and he relied on his mouth to say it.

"I remember, the Israeli Lion fighter uses this kind of engine." Just after the other party finished introducing him, Qin Feng suddenly said it.

Israel, crisis on all sides, so they have always attached importance to the development of the Air Force, in addition to their own transformation of the Lion fighter, but also a comprehensive creation of a Lion fighter, this is an advanced fighter with a canard layout, is still under development, Israel's development is transparent, as early as 1981, in the early stage of development, it was generously announced to the outside world, and at the same time, two years later, this engine was also selected as the power system of their fighter.

"That's right, this engine was chosen by the Lion fighter, and we hope that it can fly in the skies of more countries." Skleman said proudly.

"Can you elaborate on its parameters?" Tu Lao asked: "For example, the volume of the engine, the intake air flow and so on." ”

The other party's mouth is very strict, and he brags vigorously about how advanced it is, but he doesn't say anything about the specific data, so how should he study it? Do they want to do it all?

Not to mention other data, the intake flow must be known, otherwise, it will not be able to match the fighter at all.

So, the other party said reluctantly.

Diameter, 978 mm, total length, 4114 mm, listening to these statements, Tu Lao began to frown a little, thicker and longer than F404, this engine, if you want to stuff it into the tail of J-7, it definitely has to be overhauled, and the workload is very large, now, you are just working on the front fuselage of J-7 Cp, if the rear fuselage is also changed, the amount of task is too great.

And when he heard the other party talk about the air intake flow, Tu Lao was even more surprised: "So high? ”

F404, only more than 60 kilograms per second, and the current intake channel matching is about the same, and this kind of engine, the required flow rate is 20% higher!