The Viscosity of Synthetic Turbine Engine Lubricants from 100 to 700 deg F

Abstract

The report describes a technique for the experimental determination of fluid viscosity over the temperature range 100 deg - 700 deg. The method incorporates standard procedures, and meets accepted specifications for data precision and for temperature control and measurement over the entire temperature range. Reliable data of high precision can be obtained for subsequent analysis and prediction of lubricant performance in operating turbine aircraft engines. Complete viscosity data are presented for 30 synthetic lubricants. The following fluid types were included in this study: MIL-L-7808, MIL-L-23699, MIL-L-27502, poly(phenyl ether), and silicone formulations. Statistical analysis of the data indicates that a logarithmic relationship accurately describes the variation of kinematic viscosity with temperature over the entire temperature range. Appropriate equation can be used to calculate fluid viscosity at any desired temperature up to 500 deg F (or 700 deg F for thermally stable lubricants) with an average error less than 2%.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1971
Accession Number
AD0727060

Entities

People

  • Ronald D. Butler

Organizations

  • MRIGlobal

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Alkanes
  • Control Systems
  • Equations
  • Ethers
  • Experimental Data
  • Fluid Flow
  • Materials
  • Measurement
  • Mechanical Properties
  • Phenyl Ether
  • Physical Properties
  • Resistance Thermometers
  • Statistical Analysis
  • Synthetic Lubricants
  • Thermal Stability

Fields of Study

  • Engineering

Readers

  • Thermal Physics or Thermal Science.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).