Chapter 566: Sonar has no copper, so it’s useless to fish it out?

The high-binding titanium nitride coating has an extremely obvious addition to the tolerance of the hot-end components of aeroengines.

This allows Chang Haonan to further improve the performance of the combustion chamber and turbine.

For sea level thrust, the final gain is only a thrust-to-weight ratio of about 0.5, but there is a solid improvement in the available thrust of the aircraft at medium and high speeds.

根据目前的标定，在1.6马赫速度、1.5万米高度的“典型”超音速工况下，涡扇10的有效可用推力甚至能比F110这种亚音速优化取向的型号高出40%左右。

In fact, by the time before his rebirth, heat-resistant coatings had even evolved to use higher-level materials such as titanium aluminum nitride.

It's just that at this moment, the carbonitriding process and titanium nitride coating process are already quite difficult for China to master. The yield rate after trial production using the old model turbine design is not very high.

In addition, the special-shaped air film cooling holes developed by Chang Haonan are also very labor-intensive. For not very "smart" EDM drilling equipment, it is difficult to achieve it in one processing.

Therefore, according to current estimates, the production speed of hot-end components of the turbofan 10 is only about one-fifth that of the turbojet 14.

Although aviation engines are valuable, they are still industrial products that must be mass-produced. Blindly pursuing technological advancement and affecting production is to sacrifice the basics and pursue the last.

At this point, several core subsystems of the turbofan 10 have completely completed the preliminary design. The next task is to combine the various parts and then make some detailed adjustments and optimizations based on the cooperation between them.

This part of the work is not very difficult. The main thing is to reunite the various design teams that worked separately in the early stage.

Then comes component-level performance testing, and prototype production and testing that truly determines the fate of a model engine.

For ordinary models of engines, reaching this point is the beginning of the most complicated and torturous part.

Just like programming, it is not difficult to write code in one go, but debugging is when the programmer's patience and physical fitness are truly tested.

But the Turbofan 10 cannot be regarded as a general model.

With the help of Chang Haonan and the magical system, most pitfalls in the design process can be avoided in advance.

For him, the testing process is more like checking for deficiencies and filling them in. There will rarely be anything that could affect the overall situation or even lead to rework.

However, before that, Chang Haonan still had to return to the capital.

First, in Shengjing, the work in the next few weeks can be handed over to chief engineer Hai Yide, who has to pay attention to the production progress of the die forging press.

Secondly...it also satisfies my curiosity.

He really wanted to know the origin of those two complete sets of military GPS navigation equipment...

After Chang Haonan won three awards at the beginning of the year and took advantage of the momentum of the establishment of the Equipment Industry Department to turn the die forging press project into a regular one, his travel equipment also improved a lot.

From United Airlines' free business class, it turned into the Challenger 601 he flew on last year.

It's just that the special pilot's national flag livery was replaced by United Airlines' civil aviation livery.

"Chief, you may be the youngest person on the list of people nationwide who can enjoy special plane treatment..."

Zhu Yadan sat on the sofa opposite and pressed the soft armrest of the seat, her tone full of admiration.

When she was assigned to be a guard for Chang Haonan, she was worried about whether this was a disguised assignment.

Now it seems that I have thought too much.

"I heard from Director Ding that it would have been impossible for me to get the special plane configuration."

Chang Haonan adjusted his posture slightly, preparing to take a rest on the road later:

"But this Challenger 601 is loved by my grandma and uncle in the 34th Division. It rarely flies missions, so I simply changed the painting and brought it to me..."

For things like business jets, the cabin environment is indeed better, but it is just too small.

Like this Challenger 601, it can only have a maximum of 19 seats.

For those in China who can arrange a special plane, the size of the entourage is generally not small. Everyone is squeezed into such a small plane, but it is not as comfortable as a modified mainline passenger aircraft such as a Boeing 737.

In the end, Chang Haonan got the advantage.

Although this aircraft was painted in civil aviation paint, it did not fly on civil aviation routes, so it landed not at Nanyuan Airport, which is commonly used by United Airlines, but at the western suburbs of the 34th Division.

The distance from here to the city center is actually about the same as Nanyuan, but the flow of people is obviously less, and there is no need to wait for luggage after getting off the plane.

Even the car can be left in the parking lot.

Compared with Nanyuan, which is used both for military and civilian purposes, it is indeed much more convenient.

……

When Chang Haonan walked into Ding Gaoheng's office, the latter pulled out two bulging file boxes from the filing cabinet next to him before he could speak.

Judging from the lower position, it has been some time since it was placed there.

"I know what you want to ask, come and see for yourself."

Ding Gaoheng smiled and put the two piles of files on the table, indicating that Chang Haonan could read them by himself.

The latter took a deep breath and widened his eyes slightly:

"Is this...something I can see?"

Having said that, while asking questions, he had actually started to unpack the two file boxes.

It's just that my hands are shaking a little.

Ding Gaoheng told him before that he obtained an unmanned submarine from the United States through the Maritime Self-Defense Force.

Generally speaking, no matter how small an unmanned underwater vehicle is, it must weigh about 100 kilograms and be one or two meters long.

Being able to get this kind of thing quietly is no less difficult than stealing missiles from a military base in West Germany.

Therefore, the moment he opened the file box, the names of countless legendary spies flashed through Chang Haonan's mind.

Then, he saw the title of the report at the top:

"Report of the Naval Air Force on the Discovery and Expulsion of Submarines of Unfriendly Countries in the East China Sea Exercise Waters"

"hiss……"

Because the plot difference was so big, Chang Haonan was stunned for two seconds.

Then he realized that there might be a few million differences in methods between what Ding Gaoheng said about "getting it" and what he imagined as "getting it" -

I thought I was watching "Mission: Impossible", but it turned out to be "Greyhound"...

"so……"

Chang Haonan spent about half an hour browsing through the relatively important contents:

"During the anti-submarine exercise, our navy mistook a Self-Defense Force submarine as our own Blue Army imaginary enemy?"

Ding Gaoheng nodded.

"Then, by accident, the submarine was blown up?"

"That's not true."

Ding Gaoheng shook his head:

"The actual situation is that when the comrades of the Navy were bombing the fish, they had already determined that it was an unfriendly target of a third country. Otherwise, it would not have been possible to directly drop a mine."

"It's just that this matter still involves the French army after all. Considering international relations, in the end, the statement 'everything is a coincidence' was adopted in the internal commendation."

"Tsk tsk tsk..."

While Chang Haonan organized the reports in his hands and put them back in the file box, he sighed:

"We still have to thank our comrades in the Navy, otherwise we don't know when our GPS jamming equipment will be able to start prototype production, let alone be officially put into use."

That being said, there is actually another reason for Chang Haonan's emotion.

In his last life, he had seen many jokes on the Internet about coastal fishermen salvaging sonar released by the US and Japanese navies and then selling them as scrap.

As for jokes, the content is basically made up.

Our country's fishermen have indeed fished out relatively valuable things.

A MK46 lightweight torpedo, which is the prototype of Yu-7.

However, when designing the Fish 7, our country actually introduced the technical data of the MK46 through formal channels, so there is no direct relationship with the fished-out torpedo.

However, who would have thought.

After rebirth, the jokes that were just for fun in the past turned out to be true...