Snecma Moteurs

Frederic Beule

Michel A Desaulty

Michel Pierre Cazalens

The invention relates to a turbomachine annular combustion chamber () comprising an outer axial wall (), an inner axial wall (), and a chamber bottom end () connecting the said walls, the chamber bottom end being provided with several passages () enabling initiation of a cooling air film (D) along the hot inner surface () of the outer axial wall and initiation of a cooling air film (D) along the hot inner surface () of the inner axial wall, the outer axial wall and the inner axial wall being multi-perforated roughly over their full length in order to enable reinforcement of the cooling air films. According to the invention, the outer axial wall and the inner axial wall are provided, in an upstream part, with a first zone () of perforations () formed such that cooling air is introduced inside the combustion chamber in reverse flow.

Turbomachine annular combustion chamber

A system for injecting an air/fuel mixture into a turbomachine combustion chamber, including a hollow tubular structure for the flow of the air/fuel mixture into the combustion chamber; a fuel injection device placed at an upstream end of the hollow tubular structure, and an air injection device placed downstream of the fuel injection device. The system also includes a cold plasma generator placed downstream of the air injection device so as to generate active species in the flow of the air/fuel mixture and to cause prefragmentation of the molecules of the air/fuel mixture. The system further includes a device for controlling the cold plasma generator depending on the speed of operation of the turbomachine.

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Brunoy, France

Frederic Beule