DETERMINATION OF THE MECHANISMS GOVERNING THE INFLOW OF MOISTURE PAST A ROTARY SEAL - THEORETICAL MODEL

Abstract

Efforts were made to determine a method for achieving an effective moisture barrier for fire control instruments. A description is presented of the probable mechanisms governing the inflow of water and its vapor through rotary seals. The mechanisms were determined from: (1) a search of the technical literature pertaining to the mass transfer of water, its vapor and related phenomena; (2) consultations with investigators who are active in the fields of science related to water vapor and water vapor phenomena; and (3) previously developed intuitive and statistical reasoning. Utilizing the derived mechanisms, calculations are made to obtain engineering estimates of probable leakages through actual rotary sealing systems (systems employing rotary 'O'- rings). A design of experiment is proposed for proving out the mechanisms.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1963
Accession Number
AD0406307

Entities

People

  • Bernard Hoffman

Organizations

  • Frankford Arsenal

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Barometric Pressure
  • Boundaries
  • Capillary Tubes
  • Engineering
  • Gas Laws
  • Ideal Gas Law
  • Internal Pressure
  • Mass Transfer
  • Mean Free Path
  • Modulus Of Elasticity
  • Partial Pressure
  • Pressure Distribution
  • Rotary Seals
  • Surface Tension
  • Vapor Pressure
  • Viscous Flow
  • Water Vapor

Readers

  • Artificial Intelligence
  • Systems Analysis and Design
  • Thermal Physics or Thermal Science.