TEMPERATURE ERRORS IN MEASURING THE DIAMETER OF THE ROTOR OF A COMPRESSOR AND A GAS TURBINE ENGINE (TEMPERATURNYE POGRESHNOSTI IZMERENIYA DIAMETRA KOLES ROTORA KOMPRESSORA I TURBINY GTD),

Abstract

The error caused by thermal expansion of rotor wheels in gas turbines during length measurements is investigated. To account for the differential expansion of the various blade and wheel elements of the rotor, a compound expansion coefficient is derived. It is shown that to minimize thermal expansion errors the measuring instrument and the turbine rotor must reach thermal equilibrium and that a composite measuring scale with an effective expansion coefficient equal to alpha pr of the rotor should be used. Curves are given showing error versus rotor length for different delta alpha's between the rotor and the measuring scale. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 17, 1967
Accession Number
AD0673924

Entities

People

  • I. E. Velikovskii

Organizations

  • National Air and Space Intelligence Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Coefficients
  • Composite Materials
  • Compressors
  • Diameters
  • Energy Generators
  • Energy Systems
  • Engines
  • Gas Turbines
  • Generators
  • Measurement
  • Measuring Instruments
  • Mechanical Equipment
  • Thermal Expansion
  • Turbine Components
  • Turbines

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Information Retrieval
  • Spectroscopy.