Accession Number : ADD014837

Title :   System for Reducing Drag and Noise of Underwater Vehicles.

Descriptive Note : Patent, Filed 17 Feb 71, patented 29 Jan 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Nadolink, Richard H

Report Date : 29 Jan 1991

Pagination or Media Count : 5

Abstract : A means and method for simultaneously reducing drag and noise of a high-speed underwater vehicle is provided. Water is admitted through a water intake scoop in the nose of the vehicle and a polymer powder-gas combination is injected into the water stream in the scoop. The water, polymer and gas are mixed in a mixing chamber into which the scoop empties and are ejected through a circumferential ejector disposed at the minimum pressure point.

Descriptors :   CHAMBERS, DRAG, INTAKE VALVES, MIXING, NOISE, NOSES, PRESSURE, SCOOPS, STREAMS, UNDERWATER VEHICLES, VEHICLES, WATER

Subject Categories : Submarine Engineering
      Fluid Mechanics
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE