7. Flow Noise Reduction Technology
Novel flow noise reduction systems diminish turbulence-generated noise by means of boundary layer control methods and tiny surface alterations. These systems actively change the water flow properties surrounding the submarine by means of arrays of small sensors and actuators. Advanced algorithms constantly streamline the flow patterns, therefore lowering the acoustic signals produced by water movement over the hull. During operational testing, this system has shown up to 75% reduction of flow-generated noise.
8. Propulsor Optimization Systems
Advanced blade geometries and smart materials included into next-generation propulsor designs greatly lower cavitation and blade-rate noise. These systems maintain best acoustic performance over all running circumstances by continuously adjusting blade angles and rotational speeds using advanced computer control. Self-adjusting blade designs that can change their form in response to changing hydrodynamic conditions and hence lower propulsion-related noise by up to 85% are among the most recent advancements in this area.