Mine-resistant and super quiet, Sweden's new Blekinge-class stealthy GHOST submarine starts to make waves
STOCKHOLM – The Swedish Blekinge-class submarine makes use of rubberized mounts and baffles inside the vessel to reduce noise from on-board machinery or crew. Additionally, frames within the sub are filled with acoustic damping plates that absorb ambient sound. The National Interest reports. Continue reading original article
The Military & Aerospace Electronics take:
10 Sept. 2020 -- Saab’s Ghost stealthy technology, which stands for Genuine HOlistic STealth, is Saab’s quietest technology ever—and even quieter than their upgraded Gotland-class submarine.
The incredibly low acoustic signature of this super-quiet submarine is achieved through a variety of means. Saab, the submarine's designer, claims that all interior surfaces are optimized to minimize noise, including flexible hoses and compensators; and specifying maximum flow speed in air ducts, minimum bending radius on cables and pipes, and the design of out-board holes and cavities.
Saab says that the Blekinge-class uses a new hull shape and fin design that reduces hydrodynamic noise caused by water flowing along the hull surface and fins. Amazingly, the sub’s radar cross-section also has been taken into consideration and reduced through a careful mast design.
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John Keller, chief editor
Military & Aerospace Electronics