Single spoke spinner support

Patent metadata

Field	Value
Publication number	US-11541990-B2
Application number	US-202017018562-A
Country	US
Kind code	B2
Filing date	Sep 11, 2020
Priority date	Sep 11, 2020
Publication date	Jan 3, 2023
Grant date	Jan 3, 2023

Abstract

A magnetic spacer system for a spinner of a rotorcraft includes a first ring of a plurality of magnets secured to the spinner and having an inner surface facing radially inward, and a second ring of a plurality of magnets secured to a nacelle of the rotorcraft and having an outer surface facing radially outward. The first and second rings of multiple magnets are arranged concentrically, and a portion of the inner surface of the first ring of a plurality of magnets and a portion of the outer surface of the second ring of a plurality of magnets have the same polarity to repel one another. In other aspects, the magnetic spacer system may be replaced by a low-friction system.

First claim

What is claimed is:

1. A magnetic spacer system for a spinner of a rotorcraft, the magnetic spacer system comprising:
a first ring of a plurality of magnets secured to the spinner and having an inner surface facing radially inward;
a second ring of a plurality of magnets secured to a nacelle of the rotorcraft and having an outer surface facing radially outward;
wherein the first ring of a plurality of magnets and the second ring of a plurality of magnets are arranged concentrically and a portion of the inner surface of the first ring of a plurality of magnets and a portion of the outer surface of the second ring of a plurality of magnets have the same polarity to repel one another; and
a single spoke, wherein the single spoke comprises an upper spinner spoke.

2. The magnetic spacer system of claim 1 , wherein the first ring of a plurality of magnets comprises a single magnet strip and the second ring of a plurality of magnets comprises a single magnet strip.

3. The magnetic spacer system of claim 1 , wherein the first ring of a plurality of magnets comprises at least two magnets and the second ring of a plurality of magnets comprises at least two magnets.

4. The magnetic spacer system of claim 3 , wherein the at least two magnets are arranged around the first ring of a plurality of magnets so that adjacent magnets of the at least two magnets have alternating polarities.

5. The magnetic spacer system of claim 3 , wherein the at least two magnets are arranged around the second ring of a plurality of magnets so that adjacent magnets of the at least two magnets have alternating polarities.

6. The magnetic spacer system of claim 1 , wherein the second ring of a plurality of magnets is secured to an outer edge of the nacelle that is offset to have a smaller diameter than the nacelle.

7. The magnetic spacer system of claim 1 , wherein the spinner comprises:
a nosecone secured to a rotor system of the rotorcraft via the upper spinner spoke; and
a rotor spinner panel secured at a first end of the rotor spinner panel to the nosecone and supported at a second end of the rotor spinner panel by the first and second ring of a plurality of magnets.

8. A rotorcraft comprising:
a spinner configured to cover at least a portion of a rotor system of the rotorcraft, the spinner comprising:
a nosecone secured to the rotor system via a single spoke, wherein the single spoke comprises an upper spinner spoke; and
a rotor spinner panel secured to the nosecone at a first end of the rotor spinner panel and comprising a first ring of a plurality of magnets secured to a second end of the rotor spinner panel and having an inner surface facing radially inward;

a nacelle comprising a second ring of a plurality of magnets, the second ring of a plurality of magnets having an outer surface facing radially outward; and
wherein the first ring of a plurality of magnets and the second ring of a plurality of magnets are arranged concentrically and a portion of the inner surface of the first ring of a plurality of magnets and a portion of the outer surface of the second ring of a plurality of magnets have the same polarity to repel one another.

9. The rotorcraft of claim 8 , wherein the rotor spinner panel comprises an opening through which a rotor of the rotor system extends.

10. The rotorcraft of claim 8 , wherein the first ring of a plurality of magnets comprises a single magnet strip and the second ring of a plurality of magnets comprises a single magnet strip.

11. The rotorcraft of claim 8 , wherein the first ring of a plurality of magnets comprises at least two magnets and the second ring of a plurality of magnets comprises at least two magnets.

12. The rotorcraft of claim 11 , wherein the at least two magnets are arranged around the first ring of a plurality of magnets so that adjacent magnets of the at least two magnets have alternating polarities.

13. The rotorcraft of claim 11 , wherein the second plurality of magnets are arranged around the second ring of at least two magnets so that adjacent magnets of the at least two magnets have alternating polarities.

14. The rotorcraft of claim 8 , wherein the second ring of a plurality of magnets is secured to an outer edge of the nacelle that is offset to have a smaller diameter than the nacelle.

15. A magnetic spacer system for a spinner of a rotorcraft, the magnetic spacer system comprising:
a first ring of a plurality of magnets secured to the spinner and having an outer surface facing radially outward;
a second ring of a plurality of magnets secured to a nacelle of the rotorcraft and having an inner surface facing radially inward;
a single spoke, wherein the single spoke comprises an upper spinner spoke; and
wherein the first ring of a plurality of magnets and the second ring of a plurality of magnets are arranged concentrically and a portion of the inner surface of the first ring of a plurality of magnets and a portion of the outer surface of the second ring of a plurality of magnets have the same polarity to repel one another.

16. The magnetic spacer system of claim 15 , wherein the spinner comprises:
a nosecone secured to a rotor system of the rotorcraft via the upper spinner spoke; and
a rotor spinner panel secured at a first end of the rotor spinner panel to the nosecone and supported at a second end of the rotor spinner panel by the first and second ring of a plurality of magnets.

17. The magnetic spacer system of claim 15 , comprising:
wherein the first ring of a plurality of magnets comprises at least two magnets and the second ring of a plurality of magnets comprises at least two magnets; and
wherein the at least two magnets are arranged around the first ring of a plurality of magnets so that adjacent magnets of the at least two magnets have alternating polarities.

Assignees

• Textron Innovations Inc

Inventors

• Miller Gary
• Shundo Ken
• Tinlin Diana R

Classifications

• B64C29/0033 Primary

  the propellers being tiltable relative to the fuselage · CPC title

• B64C11/14 Primary

  Spinners · CPC title