Hollow turbine blade stiffening

F - Mech Eng,Light,Heat,Weapons – 01 – D

Patent

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Details

F01D 5/16 (2006.01) F01D 5/18 (2006.01)

Patent

CA 2542285

An apparatus and method for at least one of stiffening a rotor blade of a gas turbine engine and raising a natural vibration frequency of the blade. The blade has a recess extending radially and inwardly into the blade. A reinforcing element is provided in the recess at a selected position to thereby allow a large blade chord at the tip end of the blade.

La présente invention se rapporte à un appareil et à un procédé permettant au moins de raidir une pale d'un moteur à turbine à gaz ou d'augmenter la fréquence vibratoire naturelle de la pale. Ladite pale possède un évidement s'étendant radialement vers l'intérieur de la pale. Un élément de renfort est placé dans l'évidement à une position sélectionnée, afin de permettre une corde de pale importante au niveau du bout de la pale.

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