Fan rotor blade having an optimized blade root

• US 10,294,957 B2
• Filed: 10/16/2015
• Issued: 05/21/2019
• Est. Priority Date: 10/16/2015
• Status: Active Grant

• Current Assignee: Hamilton Sundstrand Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: Hamilton Sundstrand Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Rosen, Seth E., Chrabascz, Eric, Vignali, Mark, Hipsky, Harold W.
• Primary Examiner(s): Seabe, Justin D
• Assistant Examiner(s): Haghighian, Behnoush
• Application Number:
  US14/885,614
• Publication Number:
  US 20170108001A1
• Time in Patent Office: 1,313 Days
• CPC Class Codes: F01D 5/141 Shape, i.e. outer, aerodynamic form F01D5/148 - F01D5/20 take precedence; blade construction F01D5/147
• CPC Class Codes: F04D 19/002 Axial flow fans
• CPC Class Codes: F04D 29/324 Blades
• CPC Class Codes: F04D 29/384 characterised by form
• CPC Class Codes: F04D 29/388 characterised by construction
• CPC Class Codes: F05D 2250/74 given by a set or table of xyz-coordinates

Abstract

A fan rotor blade extending radially from a hub is described. The fan rotor blade may include first surface and a second surface, where the first surface and second surfaces are respectively defined by a set of X-coordinates, Y-coordinates and Z-coordinates. The X, Y and Z coordinates can be set out in any of Tables T-1, T-2, E-1, and E-2. The X, Y, and Z-coordinates can also be scaled by a predetermined factor, with the X-coordinates are oriented in a tangential direction, the Z-coordinates are oriented in an axial direction, and the Y-coordinates are oriented in a radial direction.

Claims

1. A fan rotor blade extending radially from a hub, the fan rotor blade including a first surface and a second surface, wherein:

the first surface and second surfaces are respectively defined by a set of X-coordinates, Y-coordinates and Z-coordinates set out in any of Tables T-1, T-2, E-1, and E-2;

the X, Y, an Z-coordinates scaled by a predetermined factor; and

the X-coordinates are oriented in a tangential direction, the Z-coordinates are oriented in an axial direction, and the Y-coordinates are oriented in a radial direction, wherein an origin of the X, Y and Z coordinates is at an axial and radial center of the hub.

2. The fan rotor blade of claim 1, wherein the fan rotor blade comprises a tip contour defined by a set of points as defined in Tables E-1 and E-2 scaled to a predetermined factor, the set of points including paired axial dimensions H from a reference surface and radial dimensions G from a center line of the hub.

3. The fan rotor blade of claim 1, wherein the Z coordinates are non-dimensionalized values equal to a ratio of a dimension Z to a predetermined diameter at datum B.

4. The fan rotor blade of claim 1, wherein the fan rotor blade is manufactured from titanium.

5. The fan rotor blade of claim 3 wherein each of the coordinates in the Tables is adjusted by a manufacturing tolerance.

6. The fan rotor blade of claim 5, wherein the manufacturing tolerance is ±

0.03 inches.