Abstract: The invention relates to an apparatus and a method for injecting a multiple-phase jet with a variable direction and/or opening, by the fluidic interaction between the multiple-phase jet and one or more actuation jets.

Abstract: Burner comprising at least one passage for injecting at least a primary jet, such as a jet of oxidant and/or fuel and/or of a premix of oxidant and fuel, and means of injecting at least one secondary jet of fluid opening into said passage, the interaction between the primary jet and the at least one secondary jet making it possible to vary the direction and/or the size of the flame. Use of said burner for heating a charge with the variable-direction and/or variable-size flame.

Abstract: The invention relates to an apparatus for injecting at least one jet of fluid, in which the direction and/or opening of at least one of the jets may be variable, comprising means of injecting at least one main fluid jet, means for injecting at least one secondary fluid jet, and means for causing at least one main fluid jet to interact with at least one secondary fluid jet and producing a fluid jet resulting from this interaction whose direction and/or opening are variable; as well as the associated method; and the uses of these.

Abstract: An apparatus for controlling pressure instabilities in a combustion chamber. The apparatus includes a detector which detects combustion chamber pressure and outputs a signal indicative of that pressure. A controller then receives the output signal, delays it by a selectable amount of time, and outputs the resultant delayed signal to a pressure chamber device. The pressure chamber device controls the fuel pressure in a fuel line which supplies the combustion chamber. In one embodiment, this pressure chamber device is a cylindrical chamber with closed ends. The pressure chamber has inlet openings and outlet openings which are connected to the fuel line. In some embodiments the bottom of the pressure chamber device includes an elastic diaphragm activated by an electric signal from the controller. In some embodiments the controller involves a delay line for delaying the output signal from the detector.