Spinner shaft attachment

Patent metadata

Field	Value
Publication number	US-10647410-B2
Application number	US-201615225234-A
Country	US
Kind code	B2
Filing date	Aug 1, 2016
Priority date	Aug 1, 2016
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

A spinner assembly includes a cone-shaped member having a plurality of blade openings. The cone-shaped member is receivable about a shaft at a first location. A bulkhead frame is connected to the cone-shaped member. At least one strut is configured to couple the bulkhead frame to the shaft at a second location. The at least one strut includes at least one arm having a longitudinal rigid member and at least one flexure region that defines an axis about which the at least one arm bends.

First claim

What is claimed is:

1. A spinner assembly comprising:
a cone-shaped member having a plurality of blade openings, the cone-shaped member being receivable about a shaft at a first location;
a bulkhead frame connected to the cone-shaped member; and
at least one strut configured to couple the bulkhead frame to the shaft at a second location, the at least one strut including at least one arm having a longitudinal rigid member and at least one flexure region that defines an axis about which the at least one arm bends, wherein the at least one flexure region includes a first flexure region formed adjacent a first end of the at least one arm and a second flexure region formed adjacent a second end of the at least one arm.

2. The spinner assembly according to claim 1 , further comprising:
a first flange arranged at a first end of the at least one arm for mounting the at least one arm to the shaft; and
a second flange arranged at a second end, opposite to the first end, of the at least one arm for mounting the at least one arm to the spinner assembly.

3. The spinner assembly according to claim 1 , wherein the at least one arm includes a first arm and a second arm.

4. The spinner assembly according to claim 3 , wherein the first arm and the second arm are integrally formed.

5. The spinner assembly according to claim 3 , wherein the first arm and the second arm are coupled together.

6. The spinner assembly according to claim 3 , wherein the first arm is arranged at an angle relative to the second arm.

7. A propeller assembly comprising:
a propeller shaft;
a propeller hub, the propeller shaft being configured to drive rotation of the propeller hub about an axis;
a plurality of propeller blades mounted to and extending outwardly from the propeller hub; and
a spinner assembly including:
a cone-shaped member having a plurality of blade openings, the cone-shaped member being coupled to the propeller shaft at a first connection adjacent a first side of the propeller hub;
a bulkhead frame connected to the cone-shaped member; and
at least one strut configured to couple the bulkhead frame to the propeller shaft at a second connection adjacent a second side, opposite to the first side, of the propeller hub, the at least one strut comprising at least one arm having a longitudinal rigid member and at least one flexure region that defines an axis about which the at least one arm may flex, wherein the at least one flexure region includes a first flexure region formed adjacent a first end of the at least one arm and a second flexure region formed adjacent a second end of the at least one arm.

8. The propeller assembly according to claim 7 , wherein the at least one strut includes a plurality of struts, the plurality of struts being spaced equidistantly about the propeller shaft and the bulkhead frame.

9. The propeller assembly according to claim 7 , wherein the first connection is upstream from the second connection relative to an air flow.

10. The propeller assembly according to claim 7 , wherein the first connection is downstream from the second connection relative to an air flow.

11. The propeller assembly according to claim 7 , wherein the first connection and the second connection cooperate to transmit lateral and axial loads to the propeller shaft.

12. The propeller assembly according to claim 7 , wherein one of the first connection and the second connection transmits torsional loads to the propeller shaft and the other of the first connection and the second connection relieves the torsional loads at the propeller shaft while carrying axial loads.

13. The propeller assembly according to claim 7 , wherein the propeller assembly is part of an aircraft.

14. The propeller assembly according to claim 13 , wherein the propeller assembly is part of a translational thrust system.

15. A spinner assembly comprising:
a cone-shaped member having a plurality of blade openings, the cone-shaped member being receivable about a shaft at a first location;
a bulkhead frame connected to the cone-shaped member; and
at least one strut configured to couple the bulkhead frame to the shaft at a second location, the at least one strut including at least one arm having a longitudinal rigid member and at least one flexure region that defines an axis about which the at least one arm bends, wherein the at least one arm includes a first arm and a second arm.

16. The spinner assembly according to claim 15 , wherein both the first arm and the second arm each include at least one flexure region.

17. The spinner assembly according to claim 15 , wherein the first arm is arranged at an angle relative to the second arm.

Assignees

• Sikorsky Aircraft Corp

Inventors

• Higbie Robert
• Littlejohn David

Classifications

• B64C11/14 Primary

  Spinners · CPC title

• B64C2027/8236

  including pusher propellers · CPC title

• B64C27/10

  arranged coaxially · CPC title

• Y02T50/40

  Weight reduction · CPC title