Performance of a Nasvytis Multiroller Traction Drive

Abstract

Tests were conducted to determine the operational and performance characteristics of a high-speed, 14.7-to-1 fixed-ratio Nasvytis Multiroller Traction Drive at speeds to 73 000 rpm and power levels to 127 kW (170 hp). The test drive was arranged in a single-stage, planetary configuration with two rows of stepped planet rollers contained between concentric sun and ring rollers. It was lubricated with a traction fluid. Two drives were tested concurrently in a back-to-back arrangement. They exhibited good performance and operated smoothly, with a nominal peak efficiency of 95 percent. Variations of the design traction coefficient imposed by the automatic roller-loading device of 0.039, 0.048, and 0.057 seemed to have relatively little effect on any of the operating variables.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1978
Accession Number
ADA067656

Entities

People

  • Algirdas L. Nasvytis
  • Neil E. Anderson
  • Stuart H. Loewenthal

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Bearings
  • Coefficients
  • Diameters
  • Equations
  • Fatigue Life
  • Flow Rate
  • Frequency
  • Friction
  • Geometry
  • Heat Loss
  • Heat Transfer
  • Internal Combustion Engines
  • Lubricants
  • Lubrication
  • Measurement
  • Power Levels
  • Test Stands

Readers

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