Patent ID: 8181466
Filing Date: 2012-05-22
Classification: F01D

Abstract:
1. A mid-turbine frame connected to at least one mount of a gas turbine engine for transferring a first load from a first bearing and a second load from a second bearing to the mount, the mid-turbine frame comprising: a single point load shell structure that is one integral piece, the structure comprising: a concave surface that opens in a radially outward direction with respect to a rotational axis of the gas turbine engine for combining the first load and the second load into a combined load, wherein the single point load shell structure is U-shaped; and a torque box having a first member and a second member both perpendicular to the rotational axis of the gas turbine engine and joined by the concave surface for transferring the combined load from the concave surface, wherein the first load is transferred to the single point load shell structure by a first bearing cone at a first angle that is not perpendicular to the rotational axis of the gas turbine engine and the second load is transferred to the single point load shell structure by a second bearing cone at a second angle that is not perpendicular to the rotational axis of the gas turbine engine; and a plurality of struts connected to the single point load shell structure for transferring the combined load from the single point load shell structure to the mount.