Patent ID: 7938224

Claim:
Coating for acoustic treatment relative to an aircraft's surface, said coating comprises: an acoustically resistive layer ( 28 ), at least one alveolar structure ( 30 ), and a reflective layer ( 32 ), wherein, said alveolar structure ( 30 ) comprises a number of tubes that empty out, on the one hand, at a first imaginary surface ( 34 ), and, on the other hand, at a second imaginary surface ( 36 ), and said alveolar structure ( 30 ) further comprises i) sets of one or more tubes with side walls free of cut-outs and openings, and ii) tubes with side walls having cut-outs ( 38 ) linking adjacent tubes so as to create a network of communicating tubes for communicating hot gas around one of the sets of one or more tubes with side walls free of cut-outs and openings, wherein at least one of the communicating tubes is connected to at least one hot gas intake ( 40 ).