In order to study the ignition and flameout performance of triple swirler combustor

experiments of single-head combustor were carried out on ground and high altitude. The high altitude ignition performance at negative temperature was measured. The ground ignition process was photographed by means of high-speed camera. Combustion efficiency of ground ignition was measured by gas analysis method. The ignition and flameout performance

the ignition combustion efficiency and the ignition process of single-head combustor were obtained. Results showed that the triple swirler combustion structure had good ignition and flameout performance over a wide range of flow velocity in the primary zone. The fuel burnt efficiently and the ground ignition combustion efficiency was about 80%. The negative temperature increased the difficulty of ignition. Compared with the normal temperature ignition boundary

the negative temperature ignition boundary narrowed by 188%-375% when the pressure was 70 kPa. High altitude flameout boundary was close to ignition boundary. The experimental results provide an important reference to the design of the triple swirler combustor.