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US 8,113,768 B2Granted
Actuated variable geometry mid-turbine frame design
AssigneeUnited Technologies Corporation
InventorsNagendra Somanath, Keshava B. Kumar, Christopher M. Dye
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Abstract
A mid-turbine frame assembly includes a mid-turbine frame, a ring structure and a plurality of actuated struts. The ring structure surrounds the mid-turbine frame, and has an interior surface and an exterior surface. The actuated struts connect the ring structure to the mid-turbine frame. The actuated struts are strain actuated so that the actuated struts reposition the ring structure in response to a strain.
Claims16
A mid-turbine frame assembly comprising:
- a mid-turbine frame;
- a ring structure surrounding the mid-turbine frame, the ring structuring having an interior surface and an exterior surface;
- and
- a plurality of actuated struts connecting the ring structure to the mid-turbine frame, wherein the actuated struts are strain actuated so that the actuated struts reposition the ring structure in response to a strain.
1 more element
An actuated variable geometry mid-turbine frame assembly comprising:
- a torque box;
- a circular engine casing surrounding the torque box;
- a plurality of structural struts connecting the torque box to the engine casing, each structural strut having a first side and a second side;
- a plurality of actuated first oleo struts on the first side of the structural struts, the first oleo struts extending from the torque box to the engine casing;
- and
- a plurality of actuated second oleo struts on the second side of the structural struts, the second oleo struts extending from the torque box to the engine casing and axially aligned with the first oleo struts, wherein the first oleo struts and the second oleo struts equilibrate and transfer loads to the engine casing.
3 more elements
Dependencies are inferred from the claim text.