Development of a micro gas turbine combustor with T-type vaporizers

IntroductionMicro turbine engines are new comers ofaeroengines,whose thrust are in the range fromtens of Newtonto thousands of Newton,or sev-eral Watts to hundreds of Watts.They are spe-cial inthe designidea,parameters choice,struc-ture configuration,and material artificial.Theywill widely be used as the propulsion units oftarget drone,unmanned plane,cruise missiles,and the distributed energy.Currently,large amounts of research workson micro turbine engines have been performed,and mature pro…

Development of a micro gas turbine combustor with T-type vaporizers

The study includes the experimental investigation of the evaporation performance of T-type vaporizer, mainly studied the relationship of the inlet air temperature and vaporizer wall temperature with the evaporation ratio. Then, it studied the LBO(lean blow out) and combustion efficiency of the micro aero-engine combustor with T-type vaporizer on the normal pressure test rig. The inlet air condition is environmental pressure and temperature. The gas analysis method is used to study the combustion efficiency, and the inlet air temperature is 300 K, 400 K and 500 K.It could be concluded that the evaporation performance is improved with the increasing of the inlet air temperature and vaporizer wall temperature;the average LBO is 0.003;the combustion efficiency rises with the inlet air temperature, and it remain constant when the fuel/air ratio changed in the range from 0.008 to 0.02. The vaporization ratio is the key factor to determine the combustion performance.