EFFECTS OF MONOMETHYLHYDRAZINE ON CRYOPANEL MATERIALS FOR SPACE SIMULATION CHAMBER PROPULSION TESTS

Abstract

The effects of monomethylhydrazine on several commonly used cryopanel materials were investigated. The test conditions approximated those expected during rocket engine tests in a space simulation chamber. Monomethylhydrazine gas pressure was 4 torr at room temperature. Test specimen temperatures were varied between 77 and about 300K. All specimens were tested simultaneously for a total exposure time of 532 hr. Phosphorus deoxidized copper, type 304L stainless steel, and series 1100 aluminum were tested. Some specimens were brazed or welded and some were coated with a black epoxy paint. Several welded and brazed specimens were tested with an imposed bending stress. No microstructural damage occurred to any of the metals. The copper, however, tarnished noticeably, and the cryopanel paint separated from the coated specimens.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1968
Accession Number
AD0679531

Entities

People

  • D. M. Trayer
  • P. G. Waldrep

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Aluminum
  • Bending Stress
  • Chambers
  • Composite Materials
  • Engineering
  • Materials
  • Metals
  • Pressure Transducers
  • Rocket Engines
  • Simulations
  • Space Simulation Chambers
  • Stainless Steel
  • Steel
  • Stress Corrosion
  • Stresses
  • Test Equipment

Fields of Study

  • Materials science

Readers

  • Combustion and Flow Dynamics.
  • Materials Science (Mechanical Engineering).
  • Surface Coatings Technology.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster