DEVELOPMENT OF A SMALL TURBO-JET ENGINE COMBUSTOR WITH T-TYPE VAPORIZERS
The combustor size and structure of the micro turbo-jet engine are small and simple compared with large aero-engine combustors, which results in the difficult fuel preparation, so evaporator coils or sticks are more often used to produce a shear-driven fuel film evaporating into the airflow. The configuration and performance of the vaporizer is the key factor affecting the combustion performance. In order to attain advanced levels of combustion performance, the present work is concentrated on the experimental investigation of a micro turbo-jet engine 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 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 300K,400K, and 500K.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.
Quanhong Xu Jun Liu Jian Xu Yuzhen Lin Gaoen Liu
School of Jet Propulsion, National Key Laboratory on Aero-Engines Beijing University of Aeronautics and Astronautics, 10083, CHINA
国际会议
昆明
英文
156-162
2006-09-18（万方平台首次上网日期，不代表论文的发表时间）