Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture
Patent
1992-04-30
1994-04-05
Williams, Hezron E.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Content or effect of a constituent of a liquid mixture
73 6172, G01N 500
Patent
active
052994490
ABSTRACT:
The tendency of liquid hydrocarbon-based fuels, such as kerosene, diesel l, and jet fuel toward the formation of fuel-insoluble solids during thermal stress in an aircraft fuel system is assessed by an accelerated test method comprising passing a predetermined quantity of a sample of fuel through a heated test section maintained at a predetermined temperature, at a predetermined fuel flow rate. A metal test strip, weighed before the test, is clamped in the heated test section during the test. It is weighed again after the test and the weight of solids buildup during the test is determined. It is related directly to the tendency of the fuel to form fuel-insoluble solids during thermal stress. A filter is weighed before the test. It is then connected to the outlet of the test section, and liquid fuel leaving the test section during the test is passed through it. The filter is then weighed a second time and the weight increase of the filter due to its capture of fuel-insoluble solids is calculated. It also is directly related to the tendency of the fuel to form fuel-insoluble solids during thermal stress.
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Beal Erna J.
Burnett Jack C.
Hardy Dennis R.
Brock Michael
Edelberg Barry A.
McDonnell Thomas E.
The United States of America as represented by the Secretary of
Williams Hezron E.
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