Yes, at this moment, Crieldo's face was full of disbelief, not only him, but other brazier executives were all shocked by the palm-sized Y-shaped aero engine fuel injector in front of him.

No way, this fuel nozzle is so amazing that they, the veterans of the aviation industry, knocked for a long time and couldn't see how this thing was made.

It is important to know that no matter what the shape and structure of the aero engine fuel nozzle is, the number of parts is between 22 and 28, although the materials of each part are different, but basically titanium alloy or magnesium alloy light alloy materials are used.

It can only be said to be a passing grade in terms of weight control, which is not excellent.

But the Y-shaped structure of the aero engine fuel nozzle that Lin Guanghua gave them is different, not only the weight is much lighter than the traditional fuel nozzle, but more importantly, the whole is integrated, so that there is no trace of the combination of parts assembly on the surface.

What does this mean?

Since childhood, Tengfei Group has mastered a new technology of advanced aero engine fuel nozzles.

To put it bigger, it means that Tengfei Group has made subversive innovations in high-end precision manufacturing.

This may not be obvious to the layman, but Clairedo and others are all veterans who have been in the aviation industry for many years.

Although the fuel nozzle of an aero engine is not as difficult to manufacture as turbine blades, it is unimaginable to make something composed of more than 20 parts in an integrated way.

Not to mention the others, the internal structure of the fuel nozzle is very unique, involving fuel control, pressure output and other components, if not, how can so many giants not know the benefits of integration after so many years of research?

It's not that I don't want to, but I can't do it at all, integrated manufacturing is good, the question is how to take into account the internal structure?

It is such a problem that has plagued giants for half a century, Tengfei Group has not only solved it, but also from the perspective of the products in hand, the maturity is very high, not only the appearance is impeccable, but even the internal structure is also extremely fine.

"This is one of the most important supporting products of our new generation of aero engines of Tengfei Group, we call it laser additive integrated fuel nozzle, of course, this scientific name is too tongue-twisting, so it is given a more appropriate name, called 3D printing nozzle......"

Looking at the shocked and different eyes of Cleriardo and others, and the desire to explore and learn, Lin Guanghua pulled a knowing smile at the corner of his mouth, and began to slowly introduce this 3D printing nozzle.

In fact, Lin Guanghua is right, the 3D printing nozzle is indeed an important component of the new generation of aero engine of Tengfei Group, but it also has reservations, that is, the application of this 3D printing nozzle of the Thunderbolt-120 long-endurance UAV is actually just a comprehensive test and verification platform for a new generation of aero engine supporting technology created by Tengfei Group.

This is also no way, the acquisition of an aviation technology must be fully experimental verification in order to obtain sufficient supporting demonstration data.

Superpowers such as the United States and the Soviet Union have deep pockets and strong strength, and can be unscrupulous and arbitrary in the test and verification machine, but China obviously does not have such conditions.

The problem is that some aviation demonstrations rely only on wind tunnel tests, and it is difficult to obtain accurate data for computer simulation, and the usual test verification machine is not only expensive, but also not strong in practicability.

Not to mention anything else, a few years ago, Tengfei Jitu built the "Science Fiction Star" test and verification aircraft for the on-board electronic equipment and fly-by-wire control of Project 10, and built 5 of them when they were full, and then ...... There is no then.

So far, this model is the worst sales model of Tengfei Group, except for the domineering shape, it is simply a money-losing product.

If Tengfei Group goes down this road of no return, the huge family will have to go bankrupt sooner or later.

Therefore, under the careful consideration of Zhuang Jianye and others, Tengfei Group found another way, the largest UAV platform is the main model for test and verification, and cooperates with the existing two "Science Fiction Star" test and verification aircraft as a supplement to build a test and verification system that pays equal attention to unmanned and manned aircraft.

In recent years, Tengfei Group has promoted many large projects to promote flight verification, basically using TY-6 large UAV platform to complete, if a special structure is required, rapid modification immediately, all in all, for Tengfei Group, which started from UAVs, playing UAVs is simply a familiar road.

Take this demonstration of the advanced supporting components of the new generation of aero engines as an example, Tengfei Group added a number of advanced components of the aero engine, including 3D printed fuel nozzles, to a WD-48J high-power turboprop engine, and integrated it into the TY-6 large UAV platform.

After nearly half a year of testing and adjustment, the WD-48J high-power turboprop engine used for the test has become more and more mature, especially in terms of fuel saving, reaching a new height, thus increasing the endurance time of the TY-6 large UAV from the original 48 hours to 120 hours.

Based on this, the Thunderbolt-120 was born.

Of course, these thunderbolts-120 will not say anything about the past of Lin Guanghua when the mice are killed, otherwise such a good test subject...... Phew, how can a customized product be sold at a high price?

Therefore, Lin Guanghua's focus is all on the unique performance of the 3D printing nozzle, what parts are saved by 95%, what weight is reduced by 84%, what fuel usage rate is increased by 55%, what comprehensive fuel consumption is reduced by 43%, what overall performance is increased by 27%, etc., it is almost said that this 3D fuel nozzle is a rare treasure that is difficult to find in the sky and difficult to find on the ground.

Hearing this, Clildo and the others were stunned.

Fortunately, Krildo is not an ordinary person, although Lin Guanghua who was opened the conversation box was almost dizzy, but he still maintained a clear heart, and relied on this clarity to firmly grasp the key point of Lin Guanghua's words, and when Lin Guanghua said dryly, and re-soaked the thermos cup full of wolfberries to moisten his throat, he immediately asked: "Mr. Lin, what is the 3D printing equipment you just said?

"Ah~~ That's the special high-end aviation precision machining equipment that we spent 8 years to build, the model is called NB-233!"

"I wonder if there is a possibility of transfer here?" asked Krildo, cheekily.

"Of course you can, but ......" Lin Guanghua nodded without hesitation, but stopped halfway through his words, which made Krildo a little anxious: "Is there anything inconvenient?"

Lin Guanghua hesitated a little, but still frowned and said embarrassedly: "No, the main reason is that the production cost of this thing is too high, to use an inappropriate analogy, if ordinary machines are general supplies, then our NB-233 is the top luxury in the machine, the luxury in luxury, and the cost alone cost us 800 million US dollars, alas...... We're running out of it!"

Hearing this, Clairedo's eyes lit up suddenly, and he immediately asked, "Then can we take a look at this NB-233?"