Chapter 394 One person drives an industry
“By the way, I remember before, the Persians said they wanted us to improve the F14.”
Mentioning the Persian Air Force, Chang Hao Nan Ye recalled the situation a few months ago, so he asked Zhong Shihong:
"You are also upgrading the TF30 engine on it?"
What to say about F14? , is also an aircraft nearly 25 years ago. Even if China is not as comprehensive as the United States in terms of the overall development level of the aviation industry, there will be no problem in most places if such an old model needs to be renovated or improved.
The only trouble is motivation.
Although the TF30 engine performance is very good.
But again, it is a serious turbofan.
And the main defects are the unreasonable design of the compressor and poor matching of the flying hair. The production and manufacturing process is still quite good.
So it’s not easy to upgrade TF30.
"It hasn't started yet. In fact, even the specific improvement plan for power has not been determined yet."
Zhong Shihong shook his head:
"We just shipped one from Tehran some time ago. The TF30 that has reached its end of life is back and I am investigating the situation. In short, because there is no original technical data at all, it is really difficult to upgrade the technology. I am currently discussing with the other party whether to simply perform a life extension maintenance or simply wait until the domestically produced turbofan 9 is produced. , and give them a new engine.”
The prototype of the turbofan 9, the Spey MK202, has an afterburning thrust of 9.2 tons, which is slightly smaller than the 9.4 tons of the TF30-P-412, but the former still has a considerable increase. To push the potential, the key point is that the performance under working conditions should be much more stable. At least it does not require pilots to practice the skill of turning off and restarting the engine in a surge state during the maneuver before takeoff.
In addition, the length and diameter of the turbofan 9 are smaller, which not only meets the fitness requirements, but can even be the same as the F4 after the engine change, saving space and increasing some fuel carrying capacity.
Or add an auxiliary power unit (APU) to the rear half of the fuselage to generate electricity——
Due to the early design of the F14, the estimate of the power consumption of the high-power radar was not sufficient, resulting in a power supply situation Actually quite nervous.
In short, it is a huge advantage no matter how you think about it.
The only problem is that although the current progress of the domestically produced turbofan 9 cannot be said to be perfect, at least it is still far away from the Persians' expectations...
"This is It depends on whether the Persians can afford to wait. For us, we can’t make much profit regardless of overhaul or upgrade. The main benefit is to increase our popularity.”
Chang Haonan's personal interest in the F14 is just for curiosity. After all, he has never really been exposed to any type of variable-sweep wing aircraft. However, from a practical perspective, the overall performance of this model actually does not meet the requirements of the times.
The huge dead weight, low reliability and high maintenance time caused by the complex mechanical structure cannot be solved by simply changing the engine.
The F4 upgrade project, which is large in volume but low in technical difficulty, is the main source of profit.
Zhong Shihong nodded in agreement:
“This is true, so the main plan we recommend here is to wait a little longer and then change the hair directly. This will increase the combat effectiveness even more, and it will also be beneficial. Our engine makes the name known.”
If it were left in the past, this kind of engine that has not even been installed and tested, even if it is just a domestic model with a prototype, will not be taken into consideration at all.
But times have changed.
The success of the Turbojet 14 and the subsequent series of results produced by the Seiko Project have made everyone more optimistic about the progress of the Turbofan 9.
"By the way, speaking of the Seiko Project, how has the progress been in the last two or three months?"
Although Chang Haonan has the title of general consultant of the Seiko Project, because he has been working recently I'm busy with Project 10 and other issues such as software design, so it's been a while since I've been directly involved in specific projects.
"After all, it has only been half a year, and many projects have just started. However, some specific technical results have been produced, especially in welding and casting processing."
When it comes to the Seiko Plan, Zhong Shihong's tone changed significantly. I have to be a lot more serious.
The main reason why he was promoted from the director of the technical department to the deputy general manager was actually the Seiko Plan.
At this time, another person next to him took up the conversation:
"Mr. Chang, I think that compared to the specific new technologies brought out, the more important value of the Seiko Project is to give people We provide a relatively open communication platform. In the past, the information was too closed, and everyone sometimes did not know the research level of others, and they worked on many duplicate projects. ”
There were other people nearby who also believed deeply:
“Yes, last month our factory turned a profit for the first time in the past five years, thanks also to Mr. Chang’s new technology, and The platform provided by Seiko Project." Chang Haonan turned around and remembered that this person should be a production manager of Jianning 331 Factory, his name should be Yu Fei.
The latter also immediately explained:
“We spent four months in the first half of the year updating technology and carried out a process upgrade on the turboshaft 8A engine. Finally, It has reached a relatively satisfactory technical indicator.”
"The turboshaft 8...is used on the straight 9, right?"
Chang Haonan confirmed casually.
Compared to the turbofan engine that has attracted much attention, the two types of aviation engines with output shaft power, turboshaft and turboprop, have received relatively little attention, but in fact it was not until more than 20 years later that , are still the biggest shortcomings in China's aviation power field.
“Yes, Z9, and civilian model H410.”
Yu Fei nodded:
“The low cycle life of several key components of the original turboshaft 8A is only about 40% of that of the prototype Ahaye 1C. Once the weather reaches high temperatures above 30°C, the available power will drop off a cliff, which will not even guarantee the air quality of the helicopter. It was very difficult to take off and take off, let alone transport people and cargo, which caused users to complain endlessly.”
“Before, Jiangcheng and Yangcheng, several cities with relatively good economic development levels, originally wanted to purchase a batch of police equipment. Helicopter, after contacting Bingcheng, they took a prototype for a test flight, but the result was that the customer was scared away from using it..."
Everyone around them chuckled.
But there is absolutely no intention of ridicule.
If I have to say it, it’s self-deprecating.
In fact, similar embarrassing situations are not isolated cases. It can even be said that almost everyone engaged in aviation in this era has encountered similar scenes.
Not to mention the civilian models, which have greater options for users to choose from, even the military models will be rejected.
“Fortunately, it was a coincidence this time. The first batch of our improved new engines just rolled off the production line and completed testing. We quickly shipped two units and replaced them, which was barely accepted by customers.”
< br>"General aviation is indeed a big market. If this area can be well maintained, there will definitely be great potential in the future."
Chang Haonan was quite pleased to hear this story.
After all, users are accustomed to this kind of thing, and it is actually difficult to change it in a short period of time.
In particular, the user scale of general aviation is often not very large and they are not very sensitive to costs.
So much so that in the previous life until the 2020s, there were almost no domestic models of police helicopters in major cities in China, and most of the market was occupied by companies such as AgustaWestland and Eurocopter.
And now is undoubtedly a good start.
It is a pity that the size of the Z-9 is really not enough, and the Z-8 model has huge fundamental problems. Unless the entire aircraft can be redesigned like the Z-8L later, it may be difficult to save it. .
In addition, Lanxiang Machinery Factory, which produces turboshaft 6, is considered to be first-rate weak even in the aviation power system. Chang Haonan almost forgot about it when he wrote the report before.
In short, I can only say that there is a long road ahead.
At this moment, the sound of high heels tapping on the ground came from far and near.
“Director Chang!”
Chang Haonan turned around and found that it was a venue staff member.
"Director Chang, our conference is about to start. Regarding the specific agenda, Mr. Liang still has some things to confirm with you. Backstage..."
Looking at Chang Haonan's leaving figure, Liu Yongquan looked at Chang Haonan's leaving figure. He once again touched his bald head out of habit:
"Mr. Chang has driven our entire industry forward by himself..."
(End of this chapter)
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