Reinforced blade and spar
AssigneeRatier-Figeac SAS
InventorPascal Amat
Life of this patent
Estimating the term…
Abstract
A spar for a propeller blade comprises central structural member extending from a root to a tip of the spar. A first portion of the central structural member extends from the root of the spar and a second portion extends from the tip and adjoins the first portion. The central structural member includes a first plurality of plies of composite material on a pressure side thereof and a second plurality of plies of composite material on a suction side thereof wherein the first plurality of plies are in contact with the second plurality of plies in the second portion from a leading edge to a trailing edge thereof. A plurality of yarns extends through the central structural member in at least the second portion.
Claims20
A spar for a propeller blade comprising:
- a central structural member extending from a root to a tip of the spar, a first portion of the central structural member extending from the root of the spar and a second portion extending from the tip and adjoining the first portion, the central structural member including a first plurality of plies of composite material on a pressure side thereof and a second plurality of plies of composite material on a suction side thereof wherein the first plurality of plies are in contact with the second plurality of plies in the second portion from a leading edge to a trailing edge thereof;
- and
- a plurality of yarns extending through the central structural member in at least the second portion.
A method of manufacturing a spar for a propeller blade comprising:
- forming a central structural member having a first portion extending from the root of the spar and a second portion extending from the tip and adjoining the first portion, the central structural member including a first plurality of plies of composite material on a pressure side thereof and a second plurality of plies of composite material on a suction side thereof wherein the first plurality of plies are in contact with the second plurality of plies in the second portion from a leading edge to a trailing edge thereof;
- and
- threading a plurality of yarns through the central structural member at least in the second portion.
Dependencies are inferred from the claim text.