Gas turbine combustor and engine augmentor tube sooting characteristics
Bennett, J. S.
Jway, Ching Hua
Urich, Dave J.
Netzer, David W.
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An experimental investigation was conducted to investigate the effects of smoke-suppressant fuel additives, fuel composition and combustor operating environment on the soot characteristics within the combustor and across an engine exhaust augmentor tube. A T63 combustor was used with fuel additive pumps and an exhaust augmentor tube. Soot mean diameters and concentrations were measured at two locations within the combustor and at the exhaust of the augmentor tube using three-wavelength light transmission and multiple-angle forward scattering measurements and collection probes. Fuel and air flow rates were varied and combustor inlet air temperature was varied using a hydrogen-fueled vitiated air heater. Combustor flow conditions were found to significantly change soot characteristics as well as the effects of smoke- suppressant fuel additives. D32(volume-to-surface mean diameter) varied between 0.10 and 0.30 microns within the combustor. D32 increased significantly across the engine augmentor tube, to sizes as large as 0.43 microns
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
NPS Report NumberNPS67-86-004
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