Window Frame for Aircraft
A window frame ( 1 ) for installation in the exterior shell ( 5 ) of an aircraft comprises at least one outer flange ( 2 ), an inner flange ( 3 ), and a vertical flange ( 4 ) arranged perpendicular to and between these flanges, whereby the connection with the aircraft structure takes place via the outer flange ( 2 ) and whereby on the inner flange ( 3 ), a window element to be held is attached, which is held via the vertical flange ( 4 ). The window frame ( 1 ) comprises resin reinforced with fiber web semifinished parts, whereby the progression of the layers of the webs in the three regions of the outer flange, inner flange, and vertical flange, respectively, follow the mechanical load direction. For manufacturing, a semifinished part ( 10 ) made from reinforced web ( 20, 21, 22 ) is inserted into a molding tool ( 11 ), in which, under pressure and temperature, resin is injected, and the component made in this manner is hardened subsequently in the molding tool.
1 . 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;
a vertical flange;
a window element;
wherein the vertical flange is arranged essentially perpendicular to the outer and inner flanges and between the outer and inner flanges;
wherein the outer flange is adapted for forming a connection to the aircraft structure;
wherein the window element abuts against the inner flange and is supported by the vertical flange;
wherein the window frame consist of resin reinforced with fiber webbing semifinished parts.
2 . The window frame of claim 1 ,
wherein the fiber webbing semifinished parts comprise a fiber bundle; and
wherein a direction of progression of the fiber bundle follows a mechanical load direction.
3 . Method for making the window frame of one of claims 1 or 2 , comprising the steps of:
inserting the semifinished part ( 10 ) made from differently placed webs ( 20 , 21 , 22 ) in a molding tool ( 11 );
performing an injection of resin while applying temperature and pressure to the semifinished part in the molding tool; and
subsequently hardening the semifinished part after the injection in the molding tool for forming the window frame ( 1 ).