On the Effectiveness of Anodized Aluminum Cryo-Panels to Pump H2

Abstract

Studies of the pumping of H(2) by anodized aluminum cryopanels have indicated that they offer considerable potential for space chamber application. The aluminum foam cryopumps adsorbed sufficient H(2) when cooled to 28 deg K to serve as practical cryosorption pumps. Future studies should consider optimization of foam geometry (thickness of foam and spacing of cooling coils) and contamination effects from substances such as diffusion pump oil and the liquid fuels of monopropellant and bipropellant engines.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1979
Accession Number
ADA538113

Entities

People

  • D. J. Watson
  • Ronald Dawbarn

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Aluminum
  • Anodic Coatings
  • Diffusion Pumps
  • Elements
  • Gages
  • Gate Valves
  • Governments
  • Heat Transfer
  • Ionization Gages
  • Isotherms
  • Materials
  • Materials Processing
  • Materials Science
  • Measurement
  • Vacuum Chambers
  • Vapor Pressure

Readers

  • Aerospace Propulsion Engineering.
  • Combustion and Flow Dynamics.
  • Thin Film Deposition Science.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster