Of course, if the parallel connection of different types of gas turbines only loses some power and is heart-wrenching, then it is even more sad to see a diesel-fired combined power system similar to that used by the 052 series destroyers of the Republic.

Even after the last 2010, the only country that can really solve the problem of diesel engines and gas turbines being transferred and exported at the same time is only Germany, an old industrial country (and there are also cases of power loss).

In other countries, it is almost impossible to synchronize the output power of two types of engines with completely different working principles, and even if it can, the power loss will be amazing.

In this way, the maximum power that can be output in the diesel-fired combined power system used above the 025 class is only the power of the two gas turbines, and when the gas turbine is working, the diesel engine cannot participate in the work at all.

In this way, Yang Hui understood what Chief Wu's plan for the 052 class was, which was completely a reduced version of the Burke-class power system, directly using four gas turbines of the same model such as the SM1 class to form a full-fuel power system.

The warship using this system works with four engines at the same time at high speeds, and because the same model is the same, the efficiency of engine merging can be negligible, and the use of two engines at low speeds can also ensure good economy.

This powertrain combination is the result of years of experience in the United States, from Spruance to Ticonderoga, to the latest Arleigh Burke class, all of which have chosen four LM2500s. It's just that the power of each is different.

Such a design scheme has been used as the power system of nearly 100 American warships, which can be described as quite mature. Even after Japan's gas-fired combined power system at the Yumi-village level, the Akizuki class after 2000 also chose to adopt the scheme of four gas turbines of the same model SM1 to form a power system.

All of these facts are indicative. The plan considered by Chief Wu seems to be better than the diesel-fuel combined power scheme of 025.

"So what Chief Wu means is to develop a power system similar to the British SM1 gas turbine, and install our new generation 052 class with four parallel machines."

As soon as these words came out, Chief Engineer Yu finally smiled, there are still people who can understand their plans, in his opinion, using four SM1 gas turbines of this level, it is definitely the most suitable power for the 052 level.

The full-combustion power can not only ensure the power system output at different speeds in the most effective way, but also avoid the power loss of the fuel-fuel combined power system when merging at high speeds, and the use of the same type of gas turbine is conducive to optimizing the production line and expanding the production quantity......

"That's right. My plan is to use four gas turbines of the same level as the SM1 to form a full-combustion power system, so as to ensure the logistics of the naval power system, after all, a small destroyer has to ensure the maintenance of spare parts for the two types of engines and different fuel reserves, which must be a lot of trouble. ”

Since the full-combustion power system has been proposed, the old director also knows a lot about the advantages of this scheme, and he can't wait to add two sentences.

He said excitedly, "And now it is all about using a combustion power system." Due to the inherent advantages of turbine engines, they can achieve very good noise and vibration control, which is very helpful for anti-submarine warfare, and its advantages are far from being comparable with the original designed diesel-fired joint program. ”

Anti-submarine warfare requires warships to have very good noise control, which is why gas turbines are so popular in destroyers.

Even other large warships such as the two attack ships, dock landing ships, and aircraft carriers have chosen gas turbines for power. After all, after the noise is low, it is not easy to be detected by passive sonar, which can effectively reduce the possibility of being detected by enemy submarines.

In such cases. It is also the best solution to replace the 052 with a full-combustion powertrain that can take into account both high-speed and cruising conditions.

Yang Hui already has a deep understanding of this. He believed that if the navy was to choose, it would definitely choose the all-combustion power scheme proposed by Chief Engineer Wu. And abandon the fire-fired combined power.

But the question Yang Hui has to consider is that the new gas turbine needs to be able to reach a total power of 56 megawatts, that is, a gas turbine at the SM1 level.

And then Chief Wu's words also proved the correctness of Yang Hui's conjecture from the side: "To say that the SM1 gas turbine level of the engine, we first need to have an aero engine that can reach the prototype of the SM1 aero engine, the prototype of SM1 is the last improved TF41 engine of Spey, and its thrust is at the level of 6.5 tons." ”

Hearing the 6.5 tons of thrust of the TF41 engine, Yang Hui's first reaction was the turbofan 9 produced by Hongqi Factory, which has a thrust of 6 tons, which should be the closest to the Spey improvement of TF41!

But is this thrust really enough? This engine can't even reach the thrust of the TF41, let alone whether the improvement project of the 420 factory can achieve the effect of Rolls-Royce's development of the SM1, if the thermal efficiency is lower......

Considering that the thermal efficiency of the 420 is lower than that of Rolls-Royce's SM1, plus the thrust of the prototype turbofan 9 is 0.5 tons less than that of the TF41.

Counting large and small, I am afraid that the 420 factory version of the SM1 is far from reaching the power of Rolls-Royce, and it is difficult to say whether the four engines can reach the required 56 megawatts.

If you don't take a long-term view, and lower your ability and posture, you will definitely suffer in the future, so the 420 plan will definitely not be able to take the route of Rolls-Roy on the basis of the turbofan 9, that is, Dongshi Xiaofeng.

In order to be able to achieve the power level of the SM1, and even further possible more powerful, when choosing an aero engine as a prototype, it is necessary to choose an engine with greater thrust.

At this time, Yang Hui already had some ideas: "I'm afraid it's not enough to use turbofan 9 as an aviation prototype, the 6-ton thrust guy on the bomb oil six, the thrust is still too small, we use the CG2000 engine under development as the prototype, and it should be good to carry out aviation refueling." ”

The design thrust of the CG-2000 engine is 7.5 tons, and the actual thrust is even higher than the design requirements, and it is about to reach 8 tons of thrust.

Even if it is considered that the fan will be topped to be cut to a certain extent and the efficiency of the external fan will be reduced, but after such an engine is changed to a gas turbine, it will definitely not be weaker than the SM1 series.

Of course, it is not only Yang Hui who can think of the CG2000 engine, but the chief engineer Yu, who proposed the development of the SM1 gas turbine engine, also set his sights on this engine long before Yang Hui.

"That's right, I also value the CG2000 engine, we change it to a gas turbine is definitely enough for the 052 class, the thrust of the four engines can reach a minimum of 14 megawatts, if our engine thermal efficiency is high enough, or if it is improved in the future, then it even has the potential to improve to 17 megawatts."

Improving to 17 megawatts, what is the concept? You need to know that the early LM2500 was just finalized in the 70s, and four LM2500 engines were installed on the Spruance-class destroyer, driving this 7,000-ton big guy to a high speed of 32 knots.

Of course, Yang Hui believes that when the CG-2000 engine is converted to 17 megawatts, the LM2500G4 of the US imperialist will soon come out, and the power of 34 megawatts will definitely be doubled.

But so what, no matter how powerful you are, it's your business, as long as my engine is enough for my warship, it's a good engine.

As long as the CG2000 engine is completed, such an engine will definitely be able to surpass the SM1 series, and when the book comes out in 2007 with four SM1 engines, he will find that no matter how you look at it, it is a complete defeat in the Republic of 052C/D.

Similarly, if the Republic of China still plans to develop destroyers of the 054 class and install two 17-megawatt CG2000 aircraft for refueling, then it is the Red Perry class. (To be continued.) )