Chapter 143 New Frigate (Part 2)
“This question may be a little presumptuous, but is the design and manufacturing of the Turbojet 14 completely completed domestically?”
You’re welcome. To be polite, once the serious issues started to be discussed, Lin Qing quickly returned to her straight-forward habit.
The reason why Spey’s aero-engine modification cannot continue is ultimately because the Spey MK202 itself is a British engine. Before the aero-engine prototype was thoroughly understood, the matter of gas turbine modification was considered. Of course nothing good will come of it.
If the design of the Turbojet 14 was entirely made by China's own people, this problem would not exist.
"Of course." Chang Haonan nodded without hesitation:
"The original design of the compressor part was based on R13F-300 and SPEI MK202, but later it was discovered that the cooperation between the high and low pressure compressors was very poor. After many modifications, there are still hidden dangers, so I just recently carried out a comprehensive redesign, which has nothing to do with before. "
In fact, he has been mentally prepared to face similar problems.
On the one hand, this engine is indeed an exaggerated improvement compared to the past when China was stumbling even in imitating aircraft engines.
On the other hand, there are indeed many cases of using foreign designs and imported parts to make them domestically produced. In many cases, there are problems with the products in the hands of users, or there is a sudden loss of parts supply after being sanctioned. Only then was exposed.
There is no reason for Party A not to worry.
"In that case, is it possible to design a light ship gas turbine based on the turbojet 14-core engine?" Lin Qing finally asked the question he wanted to know most.
"The aviation engine is burning..."
After chatting here, Chang Haonan finally realized that no wonder people from the Ship Research Institute were interested in aero engines:
"From Technically speaking, based on the performance data of the turbojet 14, it should be no problem to change it to a power gas turbine of about 13 MW, but... I wonder if you can disclose your specific use? "
Chang Haonan's understanding of naval equipment is mainly out of interest. In his impression, after the two Type 052 destroyers, the Navy seems to have not started construction of the next ship using gas turbines until after the new century.
Lin Qing hesitated for a moment.
After all, the two parties do not belong to the same system.
However, considering that the confidentiality level of the other party should be sufficient, and if the turbojet 14 aero-to-fuel solution is really adopted, there may be many opportunities for cooperation in the future, so I still said truthfully:
" We are currently selecting power for the navy’s new generation of main battleships, and the target for installation is a 4,000-ton frigate.”
After finishing speaking, perhaps because he was worried that this type of ship was not heavy enough, he drew a pie at the back:
“If the performance meets the requirements, then destroyers with larger tonnage in the future may also use the same type of ship. "A 13-megawatt gas turbine is definitely not enough for a destroyer. I'm afraid 4 main engines will have to be stacked on it to carry 6,000 tons," Chang Haonan replied with a smile:
"But if a 4,000-ton frigate uses a gas turbine, it should be about the same as the American Perry-class?"
With his rich experience in making and eating cakes in the past, he can naturally tell what kind of destroyer can also Equipped with the same power, it’s a big pie.
But it doesn't matter.
The 4,000-ton frigate obviously refers to 054/054A.
Although he is not very clear about the twists and turns in the development process of naval equipment, judging from the other party's intention, this gas turbine solution should be the first choice, but there was no reliable one at this time in the previous life. gas turbine model, so it was replaced with a diesel engine power solution.
More than 40 ships of this model had been built before his rebirth, so even if only this model was installed, there would be absolutely no problem in terms of quantity.
After being exposed, Lin Qing was not embarrassed and nodded very simply:
"Yes, the general idea is similar to Perry, a universal frigate that is relatively low-cost and can be built quickly." "However, we may choose a larger aspect ratio than the Perry class and pay the price of some hull space. Higher speed."
"In that case, it shouldn't be a big problem."
Chang Haonan briefly recalled the general data of the Perry class, and then said very. He replied firmly:
"The Perry class has a displacement of 4100 tons and is equipped with two low-power versions of LM2500, totaling 30 MW. Our two gas turbines can also reach approximately 26 MW, paired with two diesel engines The power generated by the auxiliary engine is sufficient.”
Lin Qing's eyes flashed with excitement.
Although the young man in front of me seemed to be a bit too generous, after all, the turbojet 14 was already on display at the venue, and he seemed to have some understanding of marine power, so he still It really gave him an inexplicable sense of reliability.
"In this case, I wonder if you have any plans to carry out air-to-fuel conversion?"
"Or we can apply to the Shipbuilding Industry Corporation for a public bidding. Now You should be the only one in the country with this level of technology.”
Now the new frigate program has reached a critical juncture, and it is about to decide on the specific technical route and enter the overall design stage.
Generally speaking, after starting the overall design, there is no turning back.
So Lin Qing is very anxious, very anxious.
Even if 606 Research Institute cannot deliver a finished product immediately, he hopes that the other party can at least provide a sufficiently credible solution and relevant technical information, so that his Party A, the Naval Equipment Department, may believe in the gas turbine feasibility of the plan.
"Well...In fact, the 606th Institute has already begun work on aeroderivative combustion."
"It's just that the current improvement target is a power generation using natural gas as fuel. There are some differences in performance requirements and main combustion chamber structure between the gas turbine and the power engine you need. ”
Similar to the situation in the previous life, after the installation and test flight of the Turbojet 14 came to an end, Yan Zhongcheng began to design the aeroderivative fuel plan.
From the perspective of hindsight, this is actually a job he is better at.
In the original timeline, the QD128 as an industrial gas turbine was far more successful than the turbojet 14 as an aeroengine.
As for giving priority to power generation gas turbines rather than power gas turbines, this is basically industry inertia.
Since about 20 years ago, my country has modified and produced industrial gas turbines such as WJ-6G, WP-6G and WZ-6G based on aero engines, which are used in oil fields, petrochemicals, posts and telecommunications and other departments. Power generation is one of the few market demands for domestic gas turbines.
In this era of severe fragmentation, as a person in the aviation system, Yan Zhongcheng did not know that Shipbuilding Industry was designing a gas turbine-powered frigate.
Fortunately, Chang Haonan knows now.
For Lin Qing, this was a complete surprise.
So he immediately asked:
"If there are sufficient funds, Comrade Xiao Chang, can you estimate how long it will take to come up with a prototype that can be tested? ?”
(End of this chapter)