Mixed Regime Passive Valve

Abstract

A system for gas extraction is provided with a flap valve coupled to a bore with a pivot axis offset from an axis of the bore. The valve includes a higher mass on a shorter side of the pivot axis. A valve surface on the shorter side is inclined above a horizontal plane when the valve closes. The valve opens during liquid and gas flow to extract gas from the flow. As liquid flows over the valve, the valve is forced to close. The center of gravity of the valve relative to the offset pivot point ensures that the valve remains closed during liquid flow. As gas flows over the valve, closing forces are reduced and under internal vacuum, the mass distribution about the offset pivot axis allows the flap of the valve to tilt; opening the valve and allowing gas to enter the bore.

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Document Details

Document Type
Technical Report
Publication Date
May 06, 2021
Accession Number
AD1142524

Entities

People

  • Richard E. Dooley

Organizations

  • Naval Undersea Warfare Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Anatomy
  • Animals
  • Attorneys
  • Biological Sciences
  • Cells (Biology)
  • Center Of Gravity
  • Coverings
  • Eukaryotes
  • Extraction
  • Flow
  • Fluid Flow
  • Gas Flow
  • Gravity
  • Inventions
  • Lepidoptera
  • Orientation (Direction)
  • Patent Applications
  • Right Angles
  • Undersea Warfare
  • United States
  • Water Flow

Fields of Study

  • Environmental science

Readers

  • Aerodynamics/Aeronautics.
  • Combustion and Flow Dynamics.