Elastomeric Ejection System with Acoustically Improved Check Valve

Abstract

A system for launching bodies from a submarine includes a pump for transferring seawater to an elastomeric ejection tank, and a check valve that permits transfer of the seawater to the tank, and closes upon filling of the tank. The valve includes a head and a seat, a stem having fixed thereon the head and a disk having a circular protrusion extending toward the seat, a cup mounted around the stem and having a circular depression in a surface thereof, and radially extending holes disposed in the cup. During valve closure, the disk protrusion enters the cup depression forcing water in the depression to exit the cup through a primary restrictive path of an annular gap between the protrusion and depression, and a secondary restrictive path of the radially extending holes to slow the valve head in movement during engagement with the valve seat. (4 figures)

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Document Details

Document Type
Technical Report
Publication Date
Sep 08, 2003
Accession Number
ADD020116

Entities

People

  • William P. Barker

Organizations

  • United States Department of the Navy

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Check Valves
  • Depression
  • Ejection
  • Governments
  • High Pressure
  • Inventions
  • Launch Tubes
  • Launching
  • Patents
  • Submarine Hulls
  • Submarines
  • Torpedo Tubes
  • Undersea Warfare
  • United States
  • United States Government
  • Vehicles
  • Walls

Readers

  • Electrical Engineering