Resistance skin, air intake inner wall, nacelle, propulsion components and aircraft

By using a hybrid skin shell with alternating perforated metal strips and composite solid strips on the inner wall of the aircraft air intake, the problems of easy corrosion and acoustic performance degradation of the skin shell in the prior art are solved, achieving durability and acoustic performance stability, while improving mechanical strength.

CN114537684BActive Publication Date: 2026-05-26AIRBUS OPERATIONS (SAS)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
AIRBUS OPERATIONS (SAS)
Filing Date
2021-11-24
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The existing air intake lining of aircraft is prone to corrosion and wear during use, and its acoustic performance deteriorates over time, making it impossible to maintain a good condition for a long period of time.

Method used

The structure employs a hybrid resistance shell structure formed by alternating perforated metal strips and composite solid strips. The perforated metal strips extend in the longitudinal direction, while the composite solid strips connect to them in the transverse direction. The perforated metal strips are made of materials such as stainless steel, while the composite solid strips are made of fiber-reinforced polymer materials, ensuring mechanical strength and acoustic performance.

Benefits of technology

It improves the corrosion resistance and wear resistance of the skin, maintains the stability of acoustic performance, reduces drag and reduces the risk of orifice blockage, and ensures mechanical strength.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to a resistive skin for acoustic panels or inner walls of aircraft air intakes, and also to inner walls of aircraft air intakes formed by such resistive skins, and corresponding aircraft nacelles, aircraft propulsion assemblies, and aircraft. The resistive skin comprises alternating perforated metal strips (10) in the lateral direction (Y) and composite solid strips (20) extending in the longitudinal direction (X), the perforated metal strips and composite solid strips forming a smooth outer surface and a serrated inner surface intended to contact aerodynamic flow, the composite solid strips (20) having a thickness greater than that of the perforated metal strips (10). Because the perforations (30) are located in the inherently abrasion- and corrosion-resistant metal strips, future verification of the acoustic performance of the resistive skin is guaranteed. Since the thicker composite solid strips ensure the mechanical strength of the skin, the thickness of the perforated metal strips can be reduced, thereby allowing the perforations to have a reduced size and a smaller impact on drag.
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