Abstract: The air outlet device (10) for the interior of a vehicle, particularly for being arranged above a seat of a vehicle such as, e.g., an airplane, a bus or the like, is provided with an air outlet element (38) comprising two diametrically opposed air inlet openings (44) and an air outlet opening (45). Further, the air outlet device (10) comprises a slide element (46) comprising slide portions (48) allocated to the air inlet openings (44) for blocking and unblocking them, and an actuating element (30) for moving the slide element (46), which is arranged at the air outlet opening (45) and comprises a collar. The actuating element (30) is supported so as to be pivotable about a longitudinal axis (50) of the collar. When the actuating element (30) is rotated, the slide portions (48) of the slide element (46) are movable along a curved path for blocking and unblocking the air outlet openings (45) allocated thereto.

Abstract: A method and a device for acoustic modulation of a flame through the use of an acoustically modulated feeding of a fuel. The flame is produced by burning the fuel in a hybrid burner including a premixing burner and a pilot burner associated with the latter. The fuel is fed to the premixing burner in a main flow and to the pilot burner in a pilot flow. The pilot flow is modulated and the main flow is not modulated. The invention is of particular interest for suppressing combustion oscillations in a combustion chamber to which the hybrid burner is connected.