Trailing edge flap having a waffle grid interior structure

US11046420B2 · kind B2 · utility

Assignee

• The Boeing Company · US

Inventors

• Steven Paul Walker · Arlington, US
• Perlas G. Martinez · Everett, US

Key dates

• Filing date: Oct 23, 2019
• Grant date: Jun 29, 2021
• Expiry date: Oct 28, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24331
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An aircraft flap is constructed of nested layers of composite material in the aircraft flap that include an inner layer, a middle layer and an outer layer. The aircraft flap is constructed with the inner layer laid up around a central mandrel, the middle layer laid up around the middle layer and the outer layer laid up around the middle layer. The inner layer, the middle layer and the outer layer are co-cured on the mandrel, removed from the mandrel and then assembled together with the inner layer formed in a folded over configuration around a hollow interior volume of the aircraft flap, the middle layer formed in a folded over configuration over the inner layer, and the outer layer formed in a folded over configuration around the middle layer.