Patent ID: 8096506
Filing Date: 2012-01-17
Classification: B29C,B29L,B64C,Y02T,Y10T

Abstract:
1. A method of manufacturing a window frame for installation in an exterior shell of an aircraft with an aircraft structure, the window frame comprising an outer flange, an inner flange, and a vertical flange, wherein the vertical flange is arranged substantially perpendicular to the inner and outer flanges and between the inner and outer flanges, wherein the outer flange is adapted for a connection to the aircraft structure for connecting the window frame to the aircraft, and wherein a window element abuts against the inner flange for support, the method comprising: providing a semifinished part comprised of multiple, individual substructures with a first substructure, a second substructure, a third substructure, a fourth substructure and a fifth substructure, wherein the substructures contain fibers which are arranged in an angle in relation to a 0° direction, wherein the fourth substructure contains layers each having fibers oriented in the same 0° direction; and wherein the substructures are adjusted during manufacturing of the semifinished part such that fibers of the first substructure, the second substructure and the third substructure have relative angles of ±60° in relation to the fibers of the fourth substructure; and wherein the fifth substructure is arranged on the outer flange in a riveting region such that the outer flange has a varying thickness in different radial regions, providing the semifinished part having a layer structure made of fiber bundles; wherein the outer flange comprises a quasi-isotropic structure in the riveting region.