Dynamic Foam and Aeration Test Apparatus

摘要

The report describes a technique for the experimental determination of foaming and aeration characteristics of aircraft engine lubricants. A dynamic method is presented which has the following capabilities: oil temperature to 350F, oil pressure to 200 psig, oil flow rate to 2 gpm, air flow rate to 2,000 ml/min and system pressure from ground level to 3.5 in. Hg (simulated 50,000 ft altitude). Repeatability of the method is plus or minus 25 ml of foam for low-foaming oils, plus or minus 35 ml for medium-foaming oils, and plus or minus 50 ml for high-foaming oils. Results of repeatability tests are shown graphically and data are tabulated for 111 tests on 37 oils. (Author)