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US 2015/0337661 A1Published application
T-Shaped Platform Leading Edge Anti-Rotation Tabs
AssigneeUnited Technologies Corporation
InventorsAndrew G. Alarcon, Christopher M. Quinn, James Glaspey, Matthew A. Turner
Life of this patent
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Abstract
Anti-rotation tabs for the platforms in the fan section of a gas turbine engine are provided. The anti-rotation tabs interface with the trailing edge of the spinner, thereby preventing the platform from rotating and twisting.
Claims18
A fan assembly for a jet engine, the fan assembly comprising:
- a hub;
- a spinner affixed to the hub and having a trailing edge;
- a platform affixed to the hub aft of the spinner and having a leading edge in substantially opposing facing relationship with the trailing edge of the spinner;
- and
- a tab extending forward from the leading edge and interfacing with the trailing edge.
2 more elements
A method of assembling a fan system for a jet engine, the method comprising the steps of:
- attaching fan blades to a hub;
- positioning platforms having one or more tabs extending from a leading edge of each platform between the fan blades and around the hub;
- inserting a pin through each platform and through the hub to secure each platform to the hub;
- and
- installing a spinner onto the hub so that the spinner extends axially around at least a portion of the pin and all of the tabs.
2 more elements
A rotating system comprising:
- a hub;
- a rotating part secured to the hub by securing means, the securing means defining a local axis, the rotating part free to rotate about the local axis, the rotating part comprising a leading edge spaced from a trailing edge of a co-rotating part, the rotating part having a center of gravity that is off-center with respect to the local axis, the rotating part further comprising tabs extending from the leading edge and interfacing with the co-rotating part.
A fan platform comprising:
- an aerodynamic surface substantially opposed to a bottom surface;
- a leading edge surface connecting a portion of said aerodynamic surface and said bottom surface;
- a platform saddle extending from said bottom surface adapted to accept a pin oriented substantially perpendicular to said leading edge, at least a portion of said pin extending beyond said leading edge;
- and
- a tab comprising a first portion extending from said bottom surface and a second portion attached to said first portion extending beyond said leading edge.
2 more elements
Dependencies are inferred from the claim text.