It is said that Russian nuclear submarines use lead-based nuclear reactors. This kind of reactor has a high power density and can better realize natural circulation. It does not need an accelerator pump to force circulation when sailing at medium and low speeds. This is a great advantage. At least this is better than that of the United States.

Pressurized water reactors are much more advanced.

However, it is estimated that the performance of the steam turbine used in the secondary circuit of the Russian nuclear submarine is not very good. In addition, the large reduction gear between the secondary circuit steam turbine and the submarine drive shaft causes the Russian nuclear submarine to be extremely noisy. In addition, the seven-blade side of the Russian nuclear submarine

The processing accuracy of the inclined propeller is too poor, which makes the submarine too noisy.

I don’t have any information at hand. I wonder if the secondary circuit of the latest Russian nuclear submarine reactor is changed to a steam turbine driven generator to generate electricity. The generator is rectified into DC to drive the DC motor on the propeller. If this is the case, it will require strong industrial manufacturing capabilities, especially for power generation.

The miniaturization of the machine and the technology of high-power ultra-strong magnetic DC motor are very advanced technologies.

But it can be said with certainty that its lead-based nuclear reactor technology is superior to that of the United States.