Accession Number : AD0282332

Title :   SPECIFICATION OF JET FUEL HYDROGEN CONTENT FOR CONTROL OF COMBUSTION CLEANLINESS

Corporate Author : PHILLIPS PETROLEUM CO BARTLESVILLE OKLA

Personal Author(s) : SCHIRMER,R.M.

Report Date : JUN 1962

Pagination or Media Count : 1

Abstract : A critical analysis was made of current test methods, Smoke Point and Luminometer Number, for evaluation of the burning quality of hydrocarbon fuels for aircraft gas turbine engines. Both are performance tests in which a sample of jet fuel is burned in a wick lamp to determine its relative soot forming tendency. Unfortunately, the laminar flow diffusion flame of the wick lamp differs appreciably from the highly turbulent combustion process in an aircraft gas turbine engine. Differences in the mechanism of soot formation, as evidenced by the effect of hydrocarbon structure, are discussed in detail. Measurements of the cleanliness of aircraft gas turbine combustion processes, liner temperature and flame radiation, show a linear correlation with hydrogen content of the fuel. The cleanest burning fuels are those that contain the most hydrogen. A two- to fourfold improvement in repeatability and a fourfold improvement in reproducibility over current test methods should be feasible with hydrogen content. The use of hydrogen content for specification of jet fuel burning quality is recommended. (Author)

Descriptors :   *HYDROCARBONS, *JET ENGINE FUELS, AVIATION FUELS, COMBUSTION, CONTROL, FLAMES, HYDROGEN, MOLECULAR STRUCTURE, TEST METHODS

Distribution Statement : APPROVED FOR PUBLIC RELEASE