Orbital Transfer Rocket Engine Technology Program, Soft Wear Ring Seal Technology

Abstract

Liquid Oxygen Compatibility Tests, including Autogenous Ignition, Promoted Ignition, and LoX Impact Tests, and Friction and Wear tests at different PV products were conducted for several polymer materials as a verification of implementing soft wear ring seals in advanced rocket engine turbopumps. Thermoplastics, polyimide based materials, and polyamide-imide base materials were compared for oxygen compatibility, specific wear coefficient, wear debris production, and heat dissipation mechanisms. A thermal model was generated that simulated the frictional heating input and calculated the surface temperature and temperature distribution within the seal. The predictions were compared against measured values. Heat loads in the model were varied to better match the test data and determine the difference between the measured and the calculated coefficients of friction.

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Document Details

Document Type
Technical Report
Publication Date
Feb 14, 1992
Accession Number
ADA246870

Entities

People

  • Brian Lariviere

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Human Systems
  • Weapons Technologies

DTIC Thesaurus Topics

  • Biomedical And Dental Materials
  • Digital Data
  • Failure Mode And Effect Analysis
  • Fluid Flow
  • Friction
  • Graphitic Materials
  • Heat Transfer
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanics
  • Resins
  • Rocket Engines
  • Test Facilities
  • Thermal Properties

Fields of Study

  • Materials science

Readers

  • Combustion and Flow Dynamics.
  • Polymer Science and Engineering.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).

Technology Areas

  • Space
  • Space - Hall-Effect Thruster