Loading patent…
AssigneesHerakles, Snecma
InventorsDavid LOCATELLI, Clement ROUSSILLE, Ivan HERRAIZ
Estimating the term…
A rotor disk blade for a turbine engine, the blade being made of composite material including fiber reinforcement obtained by multilayer weaving of yarns and densified by a matrix. The blade has a portion constituting an airfoil and a blade root forming a single piece, the blade root having two substantially plane opposite lateral flanks that are formed respectively extending the pressure side surface and the suction side surface of the airfoil. The blade root is clamped between two metal plates fastened against the lateral flanks of the blade root by a bolt and a nut passing through the plates and the blade root. The bolt has a head bearing against one of the two plates. The nut has a head bearing against the other plate.
A rotor disk blade for a turbine engine, the blade being made of composite material comprising fiber reinforcement obtained by multilayer weaving of yarns and densified by a matrix, the blade having a portion constituting an airfoil and a blade root forming a single piece, the blade root having two substantially plane opposite lateral flanks that are formed respectively extending the pressure side surface and the suction side surface of the airfoil, the blade root being clamped between two metal plates fastened against the lateral flanks of the blade root by a bolt and a nut passing through the plates and the blade root, wherein the bolt has a head bearing against one of the two plates and in that the nut has a head bearing against the other plate, the bolt and the nut applying some minimum level of clamping force against the metal plates for ensuring that a determined centrifugal force applied to the blade is taken up by friction between the metal plates and the lateral flanks of the blade root.
A method of assembling plates on a blade root, said blade being made of a composite material comprising fiber reinforcement obtained by multilayer weaving of yarns and densified by a matrix, the blade having a portion constituting an airfoil and a blade root forming a single piece, the blade root having two substantially plane opposite lateral flanks that are formed respectively extending the pressure side surface and the suction side surface of the airfoil, the blade root being clamped between two metal plates fastened against the lateral flanks of the blade root by a bolt and a nut passing through the plates and the blade root, wherein the bolt has a head bearing against one of the two plates, the nut having a head bearing against the other plate, and in that when tightening the bolt with the nut, some minimum level of clamping force is applied to the metal plates to ensure that a determined centrifugal force applied to the blade is taken up by friction between the metal plates and the lateral flanks of the blade root.
Dependencies are inferred from the claim text.