An experimental system of a simplified single channel wave rotor combustor was established. Experimental investigations were conducted to evaluate the influences of igniting position

jet acting time and initial pre-mixing equivalence fuel/air ratio of premixed gas on the combustion performance. Continuous hot jet was applied to ignite the premixed gas. Results show that ignition is most difficult when the distance between the nozzle exit and the wave rotor channel is approximately 38mm. However

the igniting position has little influence on development of the flame front. The influences of jet acting time on the pressure gain depend on equivalence fuel/gas ratio. The tilt angle of flame front decreases as jet acting time increases. When the equivalence fuel/gas ratio is 2.0

the combustion is unsatisfactory in the wave rotor. Meanwhile

reverse inclination of the flame front emerges with 58 degree tilt angle.