Photographic Investigation of Modified Fuel Breakup and Ignition.
Final rept. Jan 73-Dec 75,
NATIONAL AVIATION FACILITIES EXPERIMENTAL CENTER ATLANTIC CITY N J
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Laboratory evaluations were performed to determine the flammability characteristics, physical properties, and rheological profiles of modified fuel sprays. Photographs were made of fuel particles formed by air shearing in the NAFEC Fire Test Facility. Ingnition studies of the modified fuel sprays included photographs of typical combustion patterns. Comparisons of shear viscosity, droplet geometries, and ignitability of the different antimisting fuels clarify the effect of polymeric additives on turbine fuel safety, and indicate critical criteria for modified fuel specifications. The results of this investigation lead to two major conclusions. First, the modified fuel spray consists of particles of large size and highly aspherical geometry. Second, although a modified fuel can be flammable in the presence of an intense ignition source, all modified fuels tested were more difficult to ignite than neat fuel. Author
- Combustion and Ignition