Contrails
The goal of the Contrails project is to help preserve and disseminate the technical record of 20th century aerospace research, highlighting in particular the research endeavors of the Illinois Tech community.

Research on Elastohydrodynamic Lubrication of High Speed Rolling-Sliding Contacts

Report Number: AFAPL TR 72-56
Author(s): Smith, Richard L.; Walowit, Jed A.; Gupta, Pradeep K.; McGrew, John M.
Corporate Author: Mechanical Technology Inc Latham N Y
Laboratory: Air Force Aero Propulsion Laboratory
Date of Publication: 1972-07
Pages: 164
Contract: F33615-69-C-1305
Project: 3048
Task: 304806
AD Number: AD0750752

Abstract:
A rolling disc apparatus was used to obtain traction measurements for a MIL-L-7808 oil. A full matrix of data covering a range of loads, speeds, and temperatures are presented along with analytical correlation which reasonably describes the data over these parameters. Attempts were made to measure film thickness with optical, capacitance, and X-ray measuring techniques. The partial elastohydrodynamic regime was studied analytically and experimentally. Electrical continuity and resistance data have been obtained and comparisons between measured electrical resistance and predictions obtained with the asperity interactions analysis put forth in Task 2 were obtained.

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