Rotor Hub Vibration Attenuator
US-2017297685-A1 · Oct 19, 2017 · US
Method for balancing a propulsive system having non-hull contra-rotating propellers
US8998580B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8998580-B2 |
| Application number | US-201213527749-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 20, 2012 |
| Priority date | Jun 22, 2011 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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Abstract
Official abstract text for this publication.
According to the invention, at least one of the counterweights ( 40, 40.1, 40.2, 40.3, 40.4 ) is mobile mounted on a guiding slot ( 24, 34 ) coaxial to the hub envelope ( 22, 32 ) that surrounds the hub ( 21, 31 ) of the corresponding propeller ( 2, 3 ), the movement of said mobile counterweight ( 40, 40.1, 40.2, 40., 40.4 ) along said guiding slot ( 24, 34 ) being controlled on the basis of an estimation of the possible unbalance of said propulsive system ( 1 ).
First claim
Opening claim text (preview).
The invention claimed is: 1. A balancing method for a propulsive system with at least two coaxial non streamlined contra-rotating propellers, each of said propellers comprising a hub concentrically surrounded by a hub envelope and each of said hub envelopes being provided with an external wall, said balancing method according to which, to eliminate, or at least to reduce a possible unbalance of said propulsive system, counterweights are arranged on places provided on the latter, w…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Operations & Transport · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US8998580B2 cover?
- According to the invention, at least one of the counterweights ( 40, 40.1, 40.2, 40.3, 40.4 ) is mobile mounted on a guiding slot ( 24, 34 ) coaxial to the hub envelope ( 22, 32 ) that surrounds the hub ( 21, 31 ) of the corresponding propeller ( 2, 3 ), the movement of said mobile counterweight ( 40, 40.1, 40.2, 40., 40.4 ) along said guiding slot ( 24, 34 ) being controlled on the basis of an…
- Who is the assignee on this patent?
- Quiroz-Hernandez Esteban, Airbus Operations Sas
- What technology area does this patent fall under?
- Primary CPC classification B64C11/008. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 07 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).