Accession Number:

ADD020116

Title:

Elastomeric Ejection System with Acoustically Improved Check Valve

Descriptive Note:

Patent application, Filed 8 Sep 2003

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

2003-09-08

Pagination or Media Count:

17.0

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

Subject Categories:

  • Submarine Engineering
  • Pumps, Filters, Pipes, Tubing, Fittings and Valves
  • Acoustics
  • Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE