Composite liners for turbofan engines

US11506083B2 · kind B2 · utility

Assignee

• Rolls-Royce Corporation · US

Inventors

• Matthew J. Kappes · Greenwood, US
• Robert W. Heeter · Noblesville, US
• Jonathan M. Rivers · Indianapolis, US
• Benedict N. Hodgson · Indianapolis, US

Key dates

• Filing date: Jun 3, 2020
• Grant date: Nov 22, 2022
• Expiry date: Jun 22, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T50/60
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Composite liners (such as acoustic panels, fan track liners, and/or ice impact panels or boxes for turbofan engines) and techniques for forming composite liners. In some examples, the composite liner includes at least one region comprising a reinforcement architecture comprising a matrix material, a plurality of relatively tough polymer-based reinforcement elements, and a plurality of second reinforcement elements. The plurality of relatively tough polymer-based reinforcement elements and the plurality of second reinforcement elements are embedded in the matrix material.