Aircraft engine outer duct mounting device
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorRonald E. Quinn
Life of this patent
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Abstract
The invention comprises a mounting assembly for supporting the turbine outer casing duct adjacent to the turbine frame. Multiple support posts are mounted to the turbine frame and a roller means is rotatably attached to each support post. The roller means are aligned to rotate on a contact surface of the outer casing duct. Movement of the rollers on the contact surface is caused by the relative movement of the turbine frame and outer casing duct.
Claims10
A mounting assembly for a turbofan engine having inner and outer casings comprising:
- (a) a support post mounted on the inner casing;
- (b) roller means attached to said support post;
- and
- (c) a contact surface comprising a tapered roller track attached to said outer casing wherein said roller means contacts said outer casing at said contact surface and moves in motion between said inner and outer casings and wherein said roller track has a minimum radial dimension relative to the engine centerline coinciding with a non-operating position of said roller means and is tapered to a larger radial dimension, in the axial direction, in order to compress said roller means with a desired force during operation of the turbofan engine.
A mounting assembly for supporting an engine outer casing relative to a turbine frame comprising:
- (a) a support post mounted on the turbine frame;
- (b) roller means rotatably attached to said support post;
- and
- (c) a tapered contact surface attached to said engine outer casing wherein said roller means contacts said engine outer casing at said contact surface which has a minimum radial dimension relative to the engine center line coinciding with the roller means non-operating position and is tapered to a larger radial dimension in the axial direction in order to accommodate relative thermal growth of said turbine frame and the engine outer casing during engine operation.
Dependencies are inferred from the claim text.