Air intake of an aircraft nacelle that incorporates a reinforced lip with a defrost system by joule-effect

摘要

An air intake of an aircraft nacelle includes:;on the one hand, a lip (42) that is defined by a wall (52) whose surface that is in contact with the aerodynamic flows is extended on the inside of the nacelle by an inside wall (44) that borders a pipe that empties out at a power plant and on the outside of the nacelle by an outside wall (46), and, on the other hand, a surface-type Joule-effect defrosting system (58); at least a first alveolar structure (60.1) that is made of a material that conducts the heat and that is flattened against the inside surface of the wall (52) and inserted between the wall (52) and the defrosting system (58), and at least one second alveolar structure (60.2) that is made of composite material that is adjacent to the first structure (60.1).

主权项

1. An air intake of an aircraft nacelle comprising:
a lip (42) that is defined by a wall (52) having a surface that is in contact with aerodynamic flows, the lip being extended on an inside of the nacelle by an inside wall (44) that borders a pipe that empties out at a power plant; an outside wall (46); a surface Joule-effect defrosting system (58); at least a first alveolar structure (60.1) that is made of a material that conducts heat that is flattened against an inside surface of the wall (52) and inserted between said wall (52) and the defrosting system (58); and at least two second alveolar structures (60.2) that are made of composite material, the at least two second alveolar structures being adjacent to the first alveolar structure (60.1), the at least two second alveolar structures (60.2) being flattened against the inside surface of the wall (52), with the defrosting system (58) being inserted between the at least two second alveolar structures (60.2) and said wall (52), wherein the first alveolar structure (60.1) is in a zone Z1 that corresponds to approximately ⅔ of a height of the air intake that is sized for mechanical strength, and at least of the second alveolar structures (60.2) is in at least one zone Z2 that is adjacent to the zone Z1.