Mid-turbine frame torque box having a concave surface
AssigneeUnited Technologies Corporation
InventorsKeshava B. Kumar, Nagendra Somanath, William A. Sowa
Life of this patent
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Abstract
A single point load structure transfers a first load from a first bearing cone and a second load from a second bearing cone of a gas turbine engine to a plurality of struts. The single point load structure includes a stem, a branch connected to the stem and a torque box connected to the plurality of struts for absorbing the first and second loads from the stem and the branch. The stem has a concave surface that opens in a radially outward direction with respect to a rotational axis of the gas turbine engine.
Claims15
A single point load structure for transferring a first load from a first bearing cone and a second load from a second bearing cone of a gas turbine engine to a plurality of struts, the single point load structure comprising:
- a stem for combining the first and second loads from the first and second bearing cones, the stem having a concave surface that opens in a radially outward direction with respect to a rotational axis of the gas turbine engine;
- a branch connected to the stem for absorbing a portion of the first and second loads from the first and second bearing cones;
- and
- a torque box connected to the plurality of struts for transferring the combined load from the stem and branch to the plurality of struts.
A mid-turbine frame for combining and transferring a first load and a second load from a first bearing and a second bearing, respectively, to an engine casing, the mid-turbine frame comprising:
- a stem for combining the first and second loads, the stem having a concave surface that opens in a radially outward direction with respect to a rotational axis of the gas turbine engine;
- and
- a branch connected to the stem for acting as a bearing arm load transfer member;
- a torque box connected to the stem and the branch for absorbing the combined load from the stem and the branch;
- and
- a plurality of struts connected to the torque box for transferring the combined load from the torque box to the engine casing.
Dependencies are inferred from the claim text.