The effects of different pilot structures on smoke emissions of TeLESSⅡ combustor were investigated. Smoke emissions of prefilming airblast atomizer and airblast simplex atomizer were tested through gas analysis method under pilot fueled mode and pilot-main fueled mode. The results indicated that the pilot structures had a great influence on the smoke emissions under pilot fueled mode

but less influence under pilot-main fueled mode. Numerical simulation was adopted to analyze different smoke emission performances with two pilot structures under pilot fueled mode. The simulation results show that the different pilot structures change the distribution of fuel in the main combustion zone

leading to significant differences in the mass fraction and distribution position of smoke precursor acetylene and different smoke emissions of combustor outlet.