Balance weight assemblies for rotor blades
US-11254424-B2 · Feb 22, 2022 · US
Rotor blade weight system
US12110101B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12110101-B2 |
| Application number | US-202318178897-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 6, 2023 |
| Priority date | Mar 6, 2023 |
| Publication date | Oct 8, 2024 |
| Grant date | Oct 8, 2024 |
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- Title
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Abstract
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A rotorcraft has a rotor blade having a spar comprising an internal space. A weight system is disposed within the spar and the weight system includes a weight tray having an open top, a weight guide rod connected to the weight tray. The weight guide rod extends in a spanwise direction through an interior of the weight tray and a weight is disposed on the weight guide rod and vertically captured by at least one side wall of the weight tray. The weight guide rod is insertable into the weight tray from a location above the weight tray to restrict longitudinal movement of the weight guide rod relative to the weight tray.
First claim
Opening claim text (preview).
What is claimed is: 1. A weight system, comprising: a weight tray having an open top; and a weight guide rod connected to the weight tray to restrict longitudinal movement of the weight guide rod relative to the weight tray, the weight guide rod extending in a spanwise direction into an interior of the weight tray; and wherein the weight guide rod is insertable into the open top from a location above the open top; and wherein the weight guide rod is received by the weight tray in a manner that restricts rotation of the weight guide rod about a longitudinal axis of the weight guide rod. 2. The weight system of claim 1 , wherein the weight tray comprises a vertical retention profile complementary to a vertical retention profile of a weight disposed on the weight guide rod. 3. The weight system of claim 2 , wherein the vertical retention profile of the weight tray comprises a rectangular channel. 4. The weight system of claim 3 , wherein the vertical retention profile of the weight comprises a rectangular tab. 5. The weight system of claim 4 , wherein the weight guide rod comprises a box end. 6. The weight system of claim 5 , wherein the weight tray comprises a rear wall comprising a weight guide rod receptacle complementary to the box end. 7. A rotor blade, comprising: a weight system, the weight system comprising: a weight tray having an open top; and a weight guide rod connected to the weight tray to restrict longitudinal movement of the weight guide rod relative to the weight tray, the weight guide rod extending in a spanwise direction into an interior of the weight tray; wherein the weight guide rod is insertable into the open top from a location above the open top; and wherein the weight guide rod is received by the weight tray in a manner that restricts rotation of the weight guide rod about a longitudinal axis of the weight guide rod. 8. The rotor blade of claim 7 , wherein the weight tray comprises a vertical retention profile complementary to a vertical retention profile of a weight disposed on the weight guide rod. 9. The rotor blade of claim 8 , wherein the vertical retention profile of the weight tray comprises a rectangular channel. 10. The rotor blade of claim 9 , wherein the vertical retention profile of the weight comprises a rectangular tab. 11. The rotor blade of claim 10 , wherein the weight guide rod comprises a box end. 12. The rotor blade of claim 11 , wherein the weight tray comprises a rear wall comprising a weight guide rod receptacle complementary to the box end. 13. A rotorcraft, comprising: a weight system disposed within a spar, the weight system comprising: a weight tray having an open top; and a weight guide rod connected to the weight tray to restrict longitudinal movement of the weight guide rod relative to the weight tray, the weight guide rod extending in a spanwise direction into an interior of the weight tray; wherein the weight guide rod is insertable into the open top from a location above the open top; and wherein the weight guide rod is received by the weight tray in a manner that restricts rotation of the weight guide rod about a longitudinal axis of the weight guide rod.
Assignees
Inventors
Classifications
Vibration damping devices · CPC title
- B64C27/473Primary
Constructional features · CPC title
- B64C27/008Primary
Rotors tracking or balancing devices · CPC title
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- What does patent US12110101B2 cover?
- A rotorcraft has a rotor blade having a spar comprising an internal space. A weight system is disposed within the spar and the weight system includes a weight tray having an open top, a weight guide rod connected to the weight tray. The weight guide rod extends in a spanwise direction through an interior of the weight tray and a weight is disposed on the weight guide rod and vertically captured…
- Who is the assignee on this patent?
- Textron Innovations Inc
- What technology area does this patent fall under?
- Primary CPC classification B64C27/473. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Oct 08 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).