Apparatus and Method for Designing a Specially Ported Torpedo Launching System to Damp a Seawater Piston.
Patent, Filed 25 Jul 90, patented 31 Mar 92,
DEPARTMENT OF THE NAVY WASHINGTON DC
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The invention is low-noise, low-pressure torpedo launching system having specially designed ports connecting a water cylinder to an impulse tank and to a method for designing such ports. The invention uses specially designed C-shaped water cylinder discharge ports to provide a continuous and minimized pressure gradient as the ports are closed by the water piston. The resulting controlled deceleration of the water piston reduces operational noise,-reduces mechanical stresses and eliminates the need for auxiliary dashpot components.