The Stirling engine, which works in "out of the air" mode, is expected to revitalize the conventional submarine. According to this program, Russian submarine R&D personnel are developing a new generation of conventional power submarines.
The "Ruby" design bureau, a well-known submarine development unit in St. Petersburg, Russia, disclosed to the media that its test "insert" Stirling engine performed well. This year, the power unit will be installed in Russia's latest "Rada" 677. Diesel electric submarine. By 2017, Russia will mass produce a new generation of non-nuclear-powered submarines equipped with "absolute" auxiliary engines.
This is an air-independent power unit, that is, the internal combustion work of the engine does not use oxygen in the air, but instead uses the pre-stored low-temperature liquefied methane and liquid oxygen. The advantage is that it can work in airless conditions for a long time, so it is especially suitable as a power unit for submarines.
According to Russian experts, conventional diesel-electric submarines can only start the diesel engine to charge the battery after it has surfaced, and the amount of charge is limited, which greatly limits its underwater snorkeling time. The nuclear-powered submarine can sneak for a long time, but the cost is extremely high. Therefore, nuclear submarines are mainly used to carry strategic missiles to patrol cruises in the vast and deep ocean. In the semi-enclosed or fully enclosed small and medium-sized sea areas such as the Baltic Sea, the Black Sea and the Caspian Sea, the costly nuclear submarines are often used for many years.
According to Russian military intelligence analyst Dushenov, the submarine equipped with the Russian "out of the air" auxiliary power system can sneak for 25 days to float up once, which is one-fourth longer than the existing submarine in Germany and Sweden.
Experts say that this is because the Russian-made "insert" auxiliary power system uses a technology that continuously generates hydrogen fuel by using the diesel of the main engine during snorkeling, thereby enabling more permanent power generation and charging.
According to Pateshev, director of the combat department of the Russian Navy Fleet Command, as far as the current situation is concerned, as long as the Russian Navy has 4 to 6 "aggressive" auxiliary power submarines, its combat duty range is enough to cover the entire Baltic Sea and the Black Sea. And the waters of the sea.
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