US 9,810,077 B2
Fan blade attachment of gas turbine engine
James R. Murdock, Tolland, CT (US); Christopher S. McKaveney, Rocky Hill, CT (US); and Jason Elliott, Huntington, IN (US)
Assigned to United Technologies Corporation, Farmington, CT (US)
Filed by James R. Murdock, Tolland, CT (US); Christopher S. McKaveney, Rocky Hill, CT (US); and Jason Elliott, Huntington, IN (US)
Filed on Jan. 31, 2012, as Appl. No. 13/362,057.
Prior Publication US 2013/0195669 A1, Aug. 1, 2013
Int. Cl. F01D 5/30 (2006.01)
CPC F01D 5/3007 (2013.01) [F05D 2220/36 (2013.01); F05D 2250/131 (2013.01); F05D 2250/14 (2013.01); F05D 2250/141 (2013.01)] 28 Claims
OG exemplary drawing
 
1. 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.