Take Off My Aviation Era

What Zhuang Jianye said is not an exaggeration at all.

Take the Russian Navy’s Kuznetsov, a compatriot of the "Varyag" aircraft carrier currently undergoing modification at a large shipyard in the north, as an example. It has a displacement of 60,000 tons and adopts a four-axis propulsion system. Eight high-pressure boilers are driven by four steam turbines.

The total power is 134 megawatts, which is equivalent to 180,000 horsepower.

It can promote the "Kuznetsov" aircraft carrier to have an aircraft carrier of 30 knots and a battery life of 18 knots of 8,500 nautical miles.

The performance of the "Varyag" aircraft carrier and the "Kuznetsov" is not much different. At most, the quality of the high-pressure boiler is better, but overall it can only maintain a power output of about 200,000 horsepower, which guarantees the carrier at most. It has a maximum speed of 32 knots.

However, the proportion of huge high-pressure boilers and steam turbines has not changed; the high fuel consumption and low efficiency of this traditional power have also not changed.

If the D-71M gas turbine is used, it is a completely different situation.

The maximum output of a single unit is 35 MW, which is equivalent to 46,935 horsepower, and four units in parallel are 140 MW, which is equivalent to 187,000 horsepower.

Although it is slightly inferior to the 200,000 horsepower provided by the new domestic high-pressure boiler and steam turbine used by the "Varyag" aircraft carrier under transformation.

However, it is more powerful than the 134 MW and 180,000 horsepower of the Russian Navy "Kuznetsov" aircraft carrier.

At the very least, it is not a problem to maintain the speed of 30 knots for such a big ship with a displacement of 60,000 tons.

However, the most important thing is not the issue of speed and power, but the issue of space occupancy and efficiency.

The total weight of a single D-71M gas turbine is only 27 tons, and the total weight of the four sets is only 108 tons, which is less than half the weight of the power combination of the high-pressure boiler and steam turbine used on the "Varyag". As for the space utilization rate Needless to say, the compact one is called a delicate one.

The space and weight saved, whether it is to increase the number of carrier-based aircraft, or to equip more fuel and ammunition, is the most direct improvement to the combat effectiveness of the aircraft carrier.

What's more, the fuel economy and flexibility of gas turbines are much stronger than that of steam turbines. At least when they are started, there will be no long time for preheating of steam turbines, so that after the aircraft carrier arrives at the port, there will be at least four The boiler cannot be turned off in order to maintain the operational capability of the aircraft carrier to quickly start and exit the port.

This is tantamount to burning money everyday for no reason.

Gas turbines are different. The start-up speed is very fast. It does not need to be kept in operation when calling at the port. It can be completely shut down. This is also very friendly to the daily maintenance and cost maintenance of the ship. At least there is no need to do nothing. flow.

Of course, to achieve this effect, the power of the gas turbine must be increased, at least 30 megawatts or more, in order to barely meet the threshold of the aircraft carrier drive.

Don't even think about it at the level of 20 megawatts. After all, if the speed of an aircraft carrier is less than 25 knots, it is not an aircraft carrier, but a real and living target wandering in the sea.

Fortunately, China's soaring D-71M gas turbine reached the level of 30 MW. Because of this, the executive deputy team leader can no longer be described as happy, but completely excited.

Originally, even the power of the mass-produced destroyer lost its hair, but now it’s all right, and the power plants on the aircraft carrier are all gone again.

That kind of sudden happiness made the executive deputy team leader faint directly.

Of course, although the executive deputy team leader is excited, he is also very clear that although the D-71M gas turbine is not a problem in theory as the power of an aircraft carrier, it needs a series of adjustments and running-in to achieve it.

After all, the power of the aircraft carrier is very complicated, and coupled with the update and iteration of supporting equipment, the demand for power is very different from the past.

Although domestic steam turbines are backward, they are not a problem for driving large aircraft carriers. Coupled with mature technology and advantages in manufacturing costs, it is sufficient for a modified aircraft carrier.

But for the next generation of large aircraft carriers that are going to use DC motor propulsion and electromagnetic catapults, this set of power aggregate achievements is a bit behind the times.

In this regard, the executive deputy team leader who once served as the leader of the naval equipment department was very clear that at that time the navy's plan for a new generation of aircraft carriers was to use nuclear power, and it was directly in place in one step.

However, this plan is very controversial within the Navy.

The main reason is that the technical requirements of nuclear power are too great, and there is no relevant domestic experience.

Just like France’s "De Gaulle" aircraft carrier, it is known as the world’s second nuclear-powered aircraft carrier, but it turned out to be a reactor on a nuclear submarine, so that the speed of the "De Gaulle" is only a pitiful 25 knots, which is slightly faster. Either the shell of the nuclear reactor is cracked, or the direct powertrain is stubborn.

Anyway, it's just dead for you to see.

As a result, the world's second nuclear-powered aircraft carrier can only use 25 knots, a speed that can't even be blown by the deck wind to show the slow and fast wind of France.

It made the men in Paris smell silent, and the women shed tears!

Because of this, many people of insight in the Navy hope that there will be a transition type between steam turbine and nuclear power, so as to drive the integrated power system, drive the aircraft carrier at high speed, and at the same time provide enough electrical energy for the electromagnetic ejection device.

It's just that at the time of the discussion, there was not even a decent high-power gas turbine in China, so the transitional type seemed reasonable, but it was not practical.

Therefore, the issue of the power of the next-generation aircraft carrier has been debated since the return of the "Varyag" to the present.

The executive deputy team leader belongs to the typical backbone of the aircraft carrier power transition faction. According to his understanding, the stability of the platform is the most important thing for the large offensive weapon platform of the aircraft carrier. It's a grind.

Therefore, he felt that the nuclear industry should be given more time to polish nuclear power, and even learn from Russia, use one or two nuclear-powered icebreakers, put nuclear power on ships into use, and accumulate enough experience before boarding ships. Not too late.

However, there was no suitable transitional model between steam turbine and nuclear power at that time~www.readwn.com~ Even if the opinion of the executive deputy team leader is more pertinent, it is not feasible to implement it.

But now, China's soaring D-71M gas turbine has filled the gap between steam turbine and nuclear power, and made the executive deputy team leader see the hope of transitional power for large aircraft carriers!

Because of this, the executive deputy team leader also bluntly spoke to Zhuang Jianye and asked directly: "Zhuang, is there any room to increase the power of your D-71M gas turbine? It would be better if it could reach 40 MW. , You have to know that some large surface ships with a displacement of about 80,000 tons have very high power requirements, especially the new type of integrated electric propulsion system. At this stage, the D-71M gas turbine can barely meet the pass line!"

Zhuang Jianye nodded: "Our next stage of the D-71T gas turbine is expected to reach the level of 40 MW, but the current limit power of the D-71M gas turbine can also reach 38 MW. If the power output of Taiji is not required, I I think the combined power of D-71M gas turbine and our D-65F 12 MW gas turbine should be enough to drive large surface ships of 80 to 100,000 tons!"

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