Propeller blade root coupling
First Claim
Patent Images
1. A method of mounting an airfoil component body to a blade root, comprising:
- providing the airfoil component body, the airfoil component body having a connection portion, the connection portion comprising an elongate member with at least one depression formed on an outer surface thereof, wherein the airfoil component body is formed from a fibre-reinforced polymer material;
inserting the connection portion into a bore formed in the blade root, the blade root being a metal blade root; and
deforming the blade root such that a portion of the inner surface of the bore engages with at least one of the depressions in the connection portion to mechanically couple the blade root to the airfoil component body.
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Abstract
A method of mounting a metal blade root to a composite propeller blade body includes inserting a connection portion of the blade body into a bore formed in the blade root, wherein the connection portion comprises at least one depression formed in an outer surface thereof, and applying pressure to the outer surface of the blade root to cause it to deform and engage with the depressions, thereby mechanically coupling the blade root to the propeller blade body.
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Citations
14 Claims
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1. A method of mounting an airfoil component body to a blade root, comprising:
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providing the airfoil component body, the airfoil component body having a connection portion, the connection portion comprising an elongate member with at least one depression formed on an outer surface thereof, wherein the airfoil component body is formed from a fibre-reinforced polymer material; inserting the connection portion into a bore formed in the blade root, the blade root being a metal blade root; and deforming the blade root such that a portion of the inner surface of the bore engages with at least one of the depressions in the connection portion to mechanically couple the blade root to the airfoil component body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An airfoil component comprising:
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an airfoil component body having a connection portion, the connection portion comprising an elongate member with at least one depression formed on an outer surface thereof, wherein the airfoil component body is formed from a fibre-reinforced polymer material; and a metal blade root defining a bore; wherein; the connection portion is received within the bore; and an outer surface of the blade root is deformed such that a portion of the inner surface of the bore engages with at least one of the depressions in the connection portion to mechanically couple the blade root to the airfoil component body. - View Dependent Claims (10, 11, 12, 13)
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14. A propeller comprising a propeller hub and at least two propeller blades, wherein each of the propeller blades is an airfoil component comprising:
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an airfoil component body having a connection portion, the connection portion comprising an elongate member with at least one depression formed on an outer surface thereof, wherein the airfoil component body is formed from a fibre-reinforced polymer material; and a metal blade root defining a bore; wherein; the connection portion is received within the bore; and an outer surface of the blade root is deformed such that a portion of the inner surface of the bore engages with at least one of the depressions in the connection portion to mechanically couple the blade root to the airfoil component body.
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Specification