FAN ROTOR BLADE HAVING AN OPTIMIZED BLADE ROOT

• US 20170108001A1
• Filed: 10/16/2015
• Published: 04/20/2017
• 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.
• Granted Patent: US 10,294,957 B2
• Time in Patent Office: 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.

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 hub further comprises a plurality of fan rotor blades about equally spaced about an axis of the hub.

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

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

6. The fan rotor blade of claim 2 wherein each of the coordinates in the Tables is adjusted by a manufacturing tolerance.

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

0.03 inches (0.76 mm)