Inlet structure for nacelle of an aircraft, and corresponding nacelle and aircraft

Abstract

Inlet structure for nacelle of an aircraft, and corresponding nacelle and aircraft. The invention relates to an inlet structure delimiting a passage, comprising: a lip having a U-shaped section oriented backwards; a first sound-absorbing panel fixed behind the lip and delimiting the passage; a second sound-absorbing panel fixed behind the first sound-absorbing panel and delimiting the passage. Each sound-absorbing panel comprises a honeycomb core fixed between an inner skin pierced with holes and oriented towards the passage and an outer skin oriented in the opposite direction, wherein the thickness of the inner skin of the first sound-absorbing panel is greater than the thickness of the inner skin of the second sound-absorbing panel, each of the inner skins comprising a heat source embedded in a mass of the inner skin. The invention also relates to a nacelle comprising such an inlet structure and to an aircraft comprising such a nacelle. Such an inlet structure thus makes it possible to extend the de-icing and sound-absorbing surfaces from the front of the inlet lip to the rear of the acoustic panels.

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