Reinforced blade and spar
AssigneeRatier-Figeac SAS
InventorPascal Amat
Life of this patent
Estimating the term…
Abstract
A spar for an airfoil comprises a core, e.g. a foam core, a central structural member extending through the core, an outer structural layer surrounding the core and central structural member and a plurality of yarns extending through the central structural member.
Claims17
A spar for an airfoil comprising:
- a central structural member;
- an outer structural layer surrounding the central structural member;
- and
- a plurality of yarns extending through the central structural member
- wherein the central structural member is an I-beam stiffener formed from two C-shaped parts each having a central portion and two outer flange portions and wherein the C-shaped parts are attached to one another at their respective central portions, the yarns extending through the central portions of both C-shaped parts at the attachment.
A method of manufacturing a spar that includes a central structural member, an outer structural layer surrounding the central structural member, and a plurality of yarns extending through the central structural member, wherein the central structural member is an I-beam stiffener formed from two C-shaped parts each having a central portion and two outer flange portions and wherein the C-shaped parts are attached to one another at their respective central portions, the yarns extending through the central portions of both C-shaped parts, the method comprising:
- forming the central structural member;
- attaching the C-shaped parts to one another at their respective central portions;
- threading the plurality of yarns through the central portions of the central structural member to assist in joining the two C-shaped parts together;
- and
- surrounding the central structural member with the outer structural layer.
Dependencies are inferred from the claim text.