Foaming Characteristics of MIL-L-7808 Turbine Lubricants.
Abstract
An investigation of MIL-L-7808 lubricant foaming was conducted to; (1) determine the effects of air flow, temperature, simulated altitude conditions, and aeration time on lubricant foaming characteristics, (2) develop test methods for the qualification and lot acceptance testing of MIL-L-7808 lubricants with respect to foaming, (3) investigate the dispersion characteristics of the anti-foam additive used in some lubricant formulations and the associated changes in lubricant foaming during storage due to loss of anti-foam additive. This investigation has shown; (1) effect of varying test parameters including aeration rates and temperature on lubricant foaming can vary dramatically with different formulations, (2) foaming characteristics of the fourteen lubricants investigated at simulated altitude conditions exhibited the same relative foam characteristics when tested at ground level conditions, (3) lubricant foaming characteristics can change significantly in storage, (4) the relative ranking of foaming characteristics for the fourteen lubricants investigated was the same for both the dynamic and static test.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1975
- Accession Number
- ADA021231
Entities
People
- H. A. Smith
- P. W. Centers
- W. R. Craig
Organizations
- Air Force Research Laboratory