Accession Number : ADD002609

Title :   Silent Self-Controlled Orificial Restrictor.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Holliston,James F ; McGill,James E ; Stoddard,William H

Report Date : 21 Apr 1976

Pagination or Media Count : 9

Abstract : The patent application relates to an orificial restrictor for use in a ballasting system for an underwater vehicle, using a plurality of multi-holed orifice plates set in series within a casing. A hollow cylinder is slidably positioned within the casing and carries fluid supplied through an inlet in the case. A spring biases the cylinder toward the inlet and fluid pressures opposes the spring force to move the cylinder away from the inlet whereby the hollow cylinder automatically positions itself with pressure changes to control the number of orifice plates subject to flow.

Descriptors :   *Underwater vehicles, *Ballast tanks, *Valves, Orifices, Fluid control, Hovering, Noise reduction, Flow noise

Subject Categories : Marine Engineering
      Pumps, Filters, Pipes, Tubing, Fittings & Vlvs

Distribution Statement : APPROVED FOR PUBLIC RELEASE