Method and device for modulation of a flame

摘要: This invention relates to air breathing engines, such as ramjets, scramjets and internal combustion, more particularly an active combustion control device for a combustor. In particularity, the present method apparatus that applies technology advanced propulsion devices closed-loop fuel injection at sub-harmonic frequencies of instability frequency The problem limited actuator response is addressed by injecting pulses instability. may be liquid, solid or gas. To achieve this desired result, closed loop controller designed determine using divider divide combustor, yielding fraction harmonic frequency. Also, also combines open with obtain enhanced engine performance, which includes extension stable zone.