Chapter 566: Sonar has no copper, so it’s useless to fish it out?
The high bonding titanium nitride coating has an extremely obvious addition to the tolerance of the hot end parts of the aeroengine.
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.
According to the current calibration, under the "typical" supersonic operating conditions of Mach 1.6 speed and 15,000 meters altitude, the effective available thrust of the turbofan 10 can even be higher than that of the F110, a subsonic-optimized model. Out about 40%.
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 the 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 hole developed by Chang Haonan is also a labor-intensive thing. 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 parts of the turbofan 10 is only about one-fifth that of the turbojet 14.
Although aircraft 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, the preliminary design of several core subsystems of the turbofan 10 has been completely completed. 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, as well as prototype production and testing that truly determines the fate of a model engine.
For ordinary engines, reaching this point is 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 support 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 can affect the overall situation or even lead to rework.
However, before that, Chang Haonan still had to return to the capital.
First of all, 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 wants to know the origin of those two complete sets of military GPS navigation equipment...
At the beginning of the year, Chang Haonan won three awards, and with the help of the equipment industry After the momentum of the establishment of the company turned the die forging press project into a positive one, his travel configuration also improved a lot.
From United Airlines’ free business class to the Challenger 601 he flew on last year.
It’s just that the 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, pressed the soft armrest of the seat, and said in 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 was impossible for me to get this configuration of a special plane.”
Chang Haonan adjusted his posture slightly, preparing to take a rest on the road later:
“But this Challenger 601 is in the 34th Division, and it rarely flies missions, so I simply changed the painting and brought it to me to use..."
The cabin environment of a business jet 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 livery, 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 to 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 put the two piles of files on the table with a smile, 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 the question, he actually started to give The two archive boxes were unsealed.
My hands are just shaking.
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.
Getting 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"< br>
"Hiss..."
Because the plot difference was so big, Chang Haonan was stunned for two seconds.
Then I realized that there might be so many tiny differences in methods between what Ding Gaoheng said about "getting it" and what he imagined as "getting it" -
I thought It was "Mission: Impossible", but it turned out to be "Greyhound"...
"So..."
Chang Haonan spent about half an hour browsing through the relatively important contents:
“It was our navy that during the anti-submarine exercise, it regarded a Self-Defense Force submarine as our own blueprint. 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 frying the fish, they had already determined that this was an unfriendly target of a third country, otherwise it would not have been possible to directly throw a mine. "
"It's just that this matter still involves the French army. Considering international relations, in the end, the statement "everything is a coincidence" was adopted in the internal commendation. "
< br>"Tsk, tsk, tsk..."
Chang Haonan organized the reports in his hands and put them back in the file box, and said with emotion:
"We still have to thank our comrades in the Navy, otherwise we may not know when prototype production of our GPS jamming equipment will begin, let alone officially put into use."
That's what Chang Haonan said with emotion. In fact, there is another reason.
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 the jokes, the content is basically made up.
Chinese fishermen have indeed caught some 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...
(End of this chapter)