Window frame for aircraft
View Patent ↗A window frame ( 1 ) for installation in the exterior ( 5 ) of an aircraft, which comprises in each case at least one outer flange ( 2 ), one inner flange, and one vertical flange ( 4 ) arranged perpendicular between these flanges, is manufactured from a fiber-reinforced synthetic resin, in which, first, a semifinished part comprising fiber material is inserted into a molding tool, in which, under pressure and temperature, resin is injected, and subsequently, the component made in this manner is hardened in the molding tool. The semifinished part can have a layer structure either made from a webbing material, from fiber bundles, or from a combination of fiber bundles and a webbing material.
1. A window frame for installation in the exterior shell of an aircraft, comprising:
at least one outer flange having a varying thickness in different radial regions;
at least one inner flange;
at least one vertical flange arranged generally perpendicular to and between the at least one outer flange and the at least one inner flange;
wherein the at least one outer flange is attachable to the aircraft structure;
wherein on the at least one inner flange, a window element to be held is attachable, which is held via the at least one vertical flange;
wherein at least one of the at least one outer flange, at least one inner flange, and at least one vertical flange comprises a fiber-reinforced resin and is manufactured from a semi-finished part, which comprises a combination of fiber bundles and web layers; and
wherein the at least one vertical flange comprises 0° /90° web layers, the at least one outer flange comprises 0° web layers and the at least one inner flange comprises a web layer of 0° winding core; wherein the at least one vertical flange has a first outer end region, a second outer end region, and a central region positioned and extending between the first and second outer end regions, the central region including only the 0° /90° web layers.
2. The window frame for installation in the exterior shell of an aircraft of claim 1 , wherein the web layers comprise +/−60° web layers, wherein the ±60° layers are arranged in all outer regions of the outer flange, the inner flange and the vertical flange; and
wherein the ±60° layers extend from the outer flange to the inner flange.
3. The window frame according to claim 1 , wherein the first and second outer end regions of the at least one vertical flange include only ±60° web layers.