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US 9,810,077 B2Granted
Fan blade attachment of gas turbine engine
AssigneeUnited Technologies Corporation
InventorsJames R. Murdock, Christopher S. McKaveney, Jason Elliott
Life of this patent
Estimating the term…
Abstract
A fan blade includes a root including a front surface, a rear surface, a first side surface connected to the front surface and the rear surface, and a second side surface connected to the front surface and the rear surface. The front surface engages the first side surface and the second side surface by one or more blunted surfaces, and the rear surface engages the first side surface and the second side surface by one or more blunted surfaces. A blade extends from the root.
Claims28
A fan blade comprising:
- a root including a front surface, a rear surface, a first side surface connected to the front surface and the rear surface, and a second side surface connected to the front surface and the rear surface, wherein a first front curved surface connects the front surface to the first side surface, a second front curved surface connects the front surface to the second side surface, a first rear curved surface connects the rear surface to the first side surface, and a second rear curved surface connects the rear surface to the second side surface, and the front surface is substantially perpendicular to both the first side surface and the second side surface, and the rear surface is substantially perpendicular to both the first side surface and the second side surface, and
- wherein, in a cross-section of the root taken in a plane perpendicular to all of the front surface, the rear surface, the first side surface, and the second side surface, the first front curved surface, the second front curved surface, the first rear curved surface, and the second rear curved surface are curved;
- and
- a blade extending from the root.
1 more element
A turbine engine comprising:
- a compressor section;
- a combustor in fluid communication with the compressor section;
- a turbine section in fluid communication with the combustor;
- and
- a fan including a fan rotor and a plurality of fan blades, wherein the fan rotor includes a plurality of slots, each of the plurality of fan blades includes a root and a blade, and the root of each of the plurality of fan blades is received in one of the plurality of slots of the fan rotor,
- wherein each root includes a front surface, a rear surface, a first side surface connected to the front surface and the rear surface, and a second side surface connected to the front surface and the rear surface,
- wherein a first front curved surface connects the front surface to the first side surface, a second front curved surface connects the front surface to the second side surface, a first rear curved surface connects the rear surface to the first side surface, and a second rear curved surface connects the rear surface to the second side surface, and the front surface is substantially perpendicular to both the first side surface and the second side surface, and the rear surface is substantially perpendicular to both the first side surface and the second side surface, and
- wherein, in a cross-section of the root taken in a plane perpendicular to all of the front surface, the rear surface, the first side surface, and the second side surface, the first front curved surface, the second front curved surface, the first rear curved surface, and the second rear curved surface are curved.
5 more elements
Dependencies are inferred from the claim text.