Investigation on methods of kerosene/oxygen ignition using gas dynamic resonance technique

In order to realize the multiple ignitions of liquid rocket engines reliably, gas dynamic resonance ignition was applied to ignite kerosene/oxygen. Two ignition methods of kerosene/oxygen igniter, direct ignition and indirect ignition, were discussed. For direct ignition method, the differences between co-axial injection of kerosene/oxygen and top injection of kerosene were compared. For indirect ignition method, the condition of fuel-rich ignition torch was studied in contrast with the condition of fuel-lean ignition torch. According to the analysis of technical feasibility and difficulty, it can be concluded from experiments that both methods are valid for ignition, while indirect ignition method with fuel-rich torch has more advantages and is prospective to realize in engineering application within a short term.