Device for attaching a flame-holder arm to an afterburner housing

A flame-holder device for an afterburner of a bypass turbojet, the turbojet including a first inner annular housing and a second inner annular housing, defining a passageway for a main flow, and an outer annular housing defining with the first inner annular housing a passageway for a bypass flow, the device comprising:

• at least one arm support made of metal and configured to be attached to the outer housing by an upper plate;
• and
• at least one flame-holder arm of a one-piece structure made of composite material including two joined-together walls arranged to define a throat having a substantially V-shaped profile, the walls supporting on their top portions situated in the bypass flow an attachment device which attaches the flame-holder arm to the arm support,
• wherein the top portions are flat and positioned facing one another,
• wherein the arm support includes two lateral struts of which on an inside each includes a hollow cavity which leads, in a direction of the outer housing, into a top cavity hollowed out of the upper plate, and
• wherein the flame-holder device further comprises at least one pressure-tapping hole pierced in a bottom portion of each of the struts to feed air to the hollow and the top cavities, an orifice for letting the air out being arranged in the top portion of the device at the outer housing.