A Report on the Main Valve Bearing Rebuild for the Advanced Turbine Aerothermal Research Rig (ATARR).

Abstract

On December 16, 1992 the main valve in the ATARR facility seized during a run at 50 psia and 400F. Immediately prior to this problem, a run at 90 psia and 400F was successfully completed. These two tests were the first ATARR runs at high temperature. The main valve had been run dozens of times prior to this at room temperature without incident. However, some wear of the soft nickel coating on the cylinder was observed before the high temperature runs. This section of the main valve final report documents the process of rebuilding the main valve and includes a description of an analyses conducted to determine the possible cause or causes of the failure. The bearing redesigned process, which was based on the analysis just noted, is detailed. The actual rebuild, final inspection and testing of the main valve are also included to complete this section.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1993
Accession Number
ADA315472

Entities

People

  • M. Dunn
  • M. M. Weaver

Organizations

  • Calspan

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Air Force Facilities
  • Assembly
  • Clearances
  • Coefficients
  • Compressive Strength
  • Copper
  • Copper Alloys
  • Governments
  • High Temperature
  • Inspection
  • Measurement
  • Modulus Of Elasticity
  • Stress Analysis
  • Thermal Expansion
  • Turbines

Readers

  • Computational Fluid Dynamics (CFD)
  • Rocket Propulsion.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).