초록 ▼

A gas turbine engine having an outer annular turbine rotor, which is counterrotatable relative to an inner annular turbine rotor, includes attachment structure for attaching turbine blades in circumferential rows to the outer rotor. The attachment structure includes first and second male members spa

A gas turbine engine having an outer annular turbine rotor, which is counterrotatable relative to an inner annular turbine rotor, includes attachment structure for attaching turbine blades in circumferential rows to the outer rotor. The attachment structure includes first and second male members spaced axially along and circumferentially extending about the rotor, and first and second grooves spaced axially along and extending circumferentially about the rotor being defined by flanges attached to the rotor. Each male member has a first portion attached to an end of a turbine blade and extending therefrom in a radial direction. The first male member has a second portion attached to its first portion and extending therefrom in an axial direction to define the first male member with an overall hook-like cross-sectional configuration. The first groove is cross-sectionally shaped for receiving in mated relation the second portion of the first male member. The second groove is cross-sectionally shaped for receiving in mated relation in the second groove a lock segment of the locking assembly and the first portion of the second male member to lock the male members in the respective grooves and thereby lock the turbine blade against radial and axial movements relative to the rotor.

대표청구항 ▼

An attachment structure for attaching turbine blades in a circumferential row to a rotor of a gas turbine engine, said attachment structure comprising: (a) first and second male members spaced axially along and extending circumferentially about the rotor, each male member having a first portion atta

An attachment structure for attaching turbine blades in a circumferential row to a rotor of a gas turbine engine, said attachment structure comprising: (a) first and second male members spaced axially along and extending circumferentially about the rotor, each male member having a first portion attached to an end of a turbine blade and extending therefrom in a radial direction, said first male member having a second portion attached to its said first portion and extending therefrom in an axial direction; (b) a locking assembly separate from said male members, said locking assembly including a lock member; and (c) means attached to a rotor defining first and second grooves spaced axially along and extending circumferentially about the rotor, said first groove being cross-sectionally shaped for receiving in mated relation said second portion of said first male member, said second groove being cross-sectionally shaped for receiving and permitting axial movement of said first portion of said second male member with axial movement of the turbine blade to align with and insert in mated relation within said first groove said second portion of said first male member and for then receiving in mated relation in said second groove said lock member of said locking assembly and said first portion of said second male member to removably lock said male members in said respective grooves and thereby lock the turbine blade against radial and axial movements relative to the rotor.