US 12,269,588 B2
Stiffener with core and shell
John Martin Gaitonde, Bristol (GB); and Chris Heaysman, Bristol (GB)
Assigned to AIRBUS OPERATIONS LIMITED, Bristol (GB)
Filed by AIRBUS OPERATIONS LIMITED, Bristol (GB)
Filed on Nov. 7, 2022, as Appl. No. 17/982,301.
Claims priority of application No. 2115992 (GB), filed on Nov. 8, 2021.
Prior Publication US 2023/0142588 A1, May 11, 2023
Int. Cl. B64C 3/18 (2006.01)
CPC B64C 3/182 (2013.01) 19 Claims
OG exemplary drawing
 
1. A stiffener comprising: a core; and a shell which surrounds the core, wherein the shell is formed from a fibre material, and the core comprises: first and second battens arranged side by side; and a spacer between the first and second battens, wherein the stiffener extends in a lengthwise direction, and the first and second battens and the spacer have respective lengths which extend in the lengthwise direction of the stiffener;
wherein the first and second battens are spaced apart by a gap;
wherein the spacer is in the gap between the first and second battens;
wherein the first and second battens, the spacer, and the gap have respective widths;
wherein the widths of the first and second battens decrease in the lengthwise direction; and
wherein the widths of the spacer and the gap increase in the lengthwise direction.