Jiangsu Haifa Machinery Manufacturing Co., Ltd.

In recent years, discussions about China's Type 095 nuclear submarine have been heating up. Among the most closely watched aspects is its potential adoption of an "X-shaped tail rudder + pump-jet propulsion" combination design. If the relevant information is accurate, this means that China's nuclear submarines are gradually approaching or even catching up with the advanced attack nuclear submarines of the United States and Russia in terms of stealth performance, maneuverability, and comprehensive combat capability.

Traditional nuclear submarines mostly adopt a "cross-shaped tail rudder + propeller" layout, whereas the X-shaped tail rudder offers superior underwater control capabilities, especially in deep-water, high-maneuverability, and complex sea conditions. Its rudder surfaces experience more uniform force distribution, effectively improving the submarine's turning efficiency and stability while reducing wake turbulence, which positively contributes to lowering hydrodynamic noise. Currently, advanced submarines such as the U.S. Virginia-class and the UK's Astute-class employ similar design concepts.

Compared to the tail rudder structure, international community is more focused the "pump-jet propulsion system" that the Type 095 may be equipped with. Pump-jet propulsion is considered one of the key markers of modern nuclear submarine stealth technology. Unlike traditional propellers, pump-jet propulsion, through the coordinated operation of guide vanes and an internal rotor, can significantly reduce cavitation, lower noise generated during high-speed navigation, improve propulsion efficiency. Its stealth advantages are particularly pronounced during medium- to high-speed cruising.

Noise control in nuclear submarines has always been a critical indicator of a submarine's advanced level. In the past, the U.S. Navy maintained a long-standing lead through technologies such as pump-jet propulsion, floating raft vibration damping, and comprehensive noise reduction. In recent years, China has achieved continuous breakthroughs in areas such as ship fluid dynamics, ultra-quiet bearings, high-performance circulation pumps, and vibration damping systems, providing important technical support for the development of advanced nuclear submarines.

From an industrial perspective, pump-jet propulsion is inseparable from a large number of high-end fluid machinery technologies. For example, high-precision guide vane machining, low-vibration circulation pumps, highly reliable bearing systems, and complex flow channel CFD optimization are all closely related to modern high-end pump technology. This also means that the overall improvement of China's high-end pump industry, marine power industry, and precision manufacturing capabilities is becoming an important foundation for driving the leap in performance of the next-generation nuclear submarines.

In the future, as China achieves further breakthroughs in low-noise propulsion, hydrodynamic optimization, and advanced materials, the comprehensive performance of domestically produced advanced nuclear submarines is expected to continue improving, gradually entering the world's top tier.

Jiangsu Haifa Machinery Manufacturing Co., Ltd. was restructured from Jiangsu Ligong Group Co., Ltd., which was established in 1958, the Jingjiang Stainless Steel Pump and Valve Plant of the Iron and Steel Research Institute of the Ministry of Metallurgical Industry. It mainly produces API610 chemical process pumps - OH1 pumps, OH2 pumps, OH3 pumps, OH4 pumps, BB1 pumps, BB2 pumps, BB3, BB4, BB5 double-shell multi-stage pumps, VS1, VS4, VS5, VS6 barrel-type pumps, HES-type chemical process pumps, chemical pumps, petrochemical pumps, sixth-generation ultra-low carbon stainless steel high-quality leak-free molten urea pumps, urea hydrolyzer feed pumps, high-temperature asphalt pumps, pitot tube pumps, rotary jet pumps, small-flow high-head pumps, multi-stage vortex pumps, high-temperature molten salt pumps, high-temperature nitric acid pumps, vertical submerged pumps, magnetic drive pumps, low-temperature liquid hydrogen and methanol pumps, high-pressure liquid hydrogen pumps, low-temperature pumps, high-temperature nitric acid magnetic drive pumps, magnetic drive pumps for conveying solid-containing media, industrial pumps, canned motor pumps, slurry pumps, titanium tetrachloride pumps, strong self-priming pumps, lined fluorine pumps, sandwich-lined fluorine pumps, leak-free pumps, desulfurization and denitrification pumps, alkali pumps, pumps, geothermal pumps, oil pumps, axial flow pumps, printing and dyeing pumps, dyeing and finishing pumps, Ti alloy pumps, C-276 material, Hastelloy, 316L material, 347 material, forced circulation pumps, fourth-generation nuclear pumps, nuclear island pumps, special pumps for filter presses, refrigerant pumps, long-shaft vertical submerged pumps, CQC first-level energy efficiency chemical pumps, high-pressure descaling industrial pumps, and China chemical pumps. www.jslgpump.com  Tel: 13905263417  E-mail: jslgpump@gmail.com  E-mail: jsareva@163.com