Response of a GCH4-GO2 jet-swirl model rocket injector flame to acoustic perturbation is investigated. Like Flame Transfer Function(FTF) which is widely used in pre-mixed flame dynamics, the response of flame and propellant flow is characterized along...
Response of a GCH4-GO2 jet-swirl model rocket injector flame to acoustic perturbation is investigated. Like Flame Transfer Function(FTF) which is widely used in pre-mixed flame dynamics, the response of flame and propellant flow is characterized along various GCH4 modulation frequency. A photomultiplier tube(PMT) and Highspeed camera/intensifier are applied to obtain OH* chemiluminescence signal via numerical value and intensity image, respectively. The acoustic response of flame represents different tendency when the entire(global) and partial (local) flame signal are compared to each other.