Effervescent aerodynamic system for injecting an air/fuel mixture into a turbomachine combustion chamber

A CG A C An aerodynamic injection system for injecting an air/fuel mixture into a turbomachine combustion chamber comprises a tubular structure of axis XX′ that opens out at a downstream end for delivering the air/fuel mixture, at least one air feed channel that opens out into the structure so as to introduce air at a pressure Ptherein, an annular fuel passage that is formed in the structure around its axis XX′, that is connected to at least one fuel feed channel in which there flows fuel at a pressure P, and that opens out at a downstream end into the structure, and means for injecting gas into the at least one fuel feed channel, said gas being at a pressure Pthat is greater than Pand greater than or equal to Pso as to create effervescence in the fuel on being introduced into the structure.