A pulse combustor system, comprising: a first pulse combustor , comprising a controller, a combustion chamber, an inlet pipe, an exhaust pipe, and a first fuel injector for injecting fuel into the combustion chamber at a fuel supply rate, wherein the first pulse combustor has a fundamental oscillation mode and one or more additional oscillation modes; and at least one of: at least one pressure sensor for measuring a pressure inside the first pulse combustor, wherein the pulse combustor system is configured, such that if the pressure is above a predetermined pressure value, the at least one pressure sensor sends a signal to the controller configured to adjust a fuel supply rate to the first pulse combustor to reduce excitation of the one or more additional oscillation modes; and a first fluid velocity sensor for measuring a first fluid velocity at the inlet pipe and a second fluid velocity sensor for measuring a second fluid velocity at the exhaust pipe wherein the pulse combustion system is configured, such that if the first fluid velocity and/or the second fluid velocity is above a predetermined fluid velocity value, the first and/or the second fluid velocity sensor sends a signal to the controller configured to adjust a fuel supply rate to the first pulse combustor to reduce excitation of the one or more additional oscillation modes. a first pulse combustor , comprising a controller, a combustion chamber, an inlet pipe, an exhaust pipe, and a first fuel injector for injecting fuel into the combustion chamber at a fuel supply rate, wherein the first pulse combustor has a fundamental oscillation mode and one or more additional oscillation modes; and at least one of: at least one pressure sensor for measuring a pressure inside the first pulse combustor, wherein the pulse combustor system is configured, such that if the pressure is above a predetermined pressure value, the at least one pressure sensor sends a signal to the controller configured to adjust a fuel supply rate to the first pulse combustor to reduce excitation of the one or more additional oscillation modes; and a first fluid velocity sensor for measuring a first fluid velocity at the inlet pipe and a second fluid velocity sensor for measuring a second fluid velocity at the exhaust pipe wherein the pulse combustion system is configured, such that if the first fluid velocity and/or the second fluid velocity is above a predetermined fluid velocity value, the first and/or at least one pressure sensor for measuring a pressure inside the first pulse combustor, wherein the pulse combustor system is configured, such that if the pressure is above a predetermined pressure value, the at least one pressure sensor sends a signal to the controller configured to adjust a fuel supply rate to the first pulse combustor to reduce excitation of the one or more additional oscillation modes; and a first fluid velocity sensor for measuring a first fluid velocity at the inlet pipe and a second fluid velocity sensor for measuring a second fluid velocity at the exhaust pipe wherein the pulse combustion system is configured, such that if the first fluid velocity and/or the second fluid velocity is above a predetermined fluid velocity value, the first and/or the second fluid velocity sensor sends a signal to the controller configured to adjust a fuel supply rate to the first pulse combustor to reduce excitation of the one or more additional oscillation modes. <EOS>