Analysis of Debris from Accelerated Life Test of the Hughes Five-Year Vuilleumier Cryocooler.

Abstract

Unit S3 of the Hughes Vuilleumier (VM) Cryocooler Program has undergone accelerated life testing at twice the service speed expected in a normal unit. Debris samples were obtained from all areas of the cooler; samples of the regenerator balls were collected from the second and third stages only. The debris has been identified by an investigative analysis using the analytical techniques of X-ray diffraction, IMMA, and SEM/EDXS. Most of the particulates contain a combination of Iron, Chromium, and Nickel or Molybdenum Niobium compounds.

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Document Details

Document Type
Technical Report
Publication Date
May 29, 1987
Accession Number
ADA193101

Entities

People

  • D. C. Cranmer
  • E. J. Watts

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Air Platforms
  • Human Systems
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Chemical Reactions
  • Cryocoolers
  • Crystal Structure
  • Diffraction
  • Electron Microscopes
  • Electron Microscopy
  • Glass Fibers
  • Life Tests
  • Materials
  • Materials Science
  • Metals
  • Particulates
  • Radiation
  • Scanning Electron Microscopes
  • Scanning Electron Microscopy
  • X Rays
  • X-Ray Diffraction

Readers

  • Electrical Engineering
  • Software Engineering
  • Surface Engineering/Surface Coating Technology.