INTERNAL STRUCTURE OF A PRIMARY EJECTION CONDUIT

摘要

The invention relates to an internal structure (206) of a primary ejection duct of a turbomachine, said internal structure (206) comprising a primary wall (302) consisting of a surface of revolution about a longitudinal axis X, allowing air to pass through orifices (304) and forming an internal surface of the primary ejection duct, an internal skin (305) consisting of a surface of revolution about the longitudinal axis X, arranged inside the primary wall (302), an upstream flange and a downstream flange (307b) which fix the inner skin (305) inside the primary wall (302), at least one separator (52) fixed to the inner skin ( 305) and which extends from the inner skin (305) towards the primary wall (302), the or each separator (52) extends in a plane generally parallel to the longitudinal axis X, between the two flanges (307b ), and the or each separator (52) is not attached to the primary wall (302). The particular attachment of the inner wall ieure facilitates the construction of said internal structure and the attenuation of the chosen frequencies.