Gas turbine engine
US-9841031-B2 · Dec 12, 2017 · US
Counterweight-based device for controlling the orientation of fan blades of a turboprop engine
US8932018B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8932018-B2 |
| Application number | US-201113582254-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 18, 2011 |
| Priority date | Mar 1, 2010 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
Official abstract text for this publication.
A device for controlling orientation of fan blades of a turboprop including at least one set of fan blades having adjustable orientation attached in rotation to a rotating ring mechanically connected to a turbine rotor. Each blade of the set is coupled to a blade root support pivotably mounted on the rotating ring by a conical gear train including a first gear wheel attached to the blade root support and a second gear wheel attached to the rotating ring and bearing a counterweight that is eccentric with respect to its axis of rotation. A cylinder attached in rotation to the turbine rotor and a rod of which is connected to each counterweight through a connecting arm makes it possible to impart synchronous angular displacement to all the counterweights about the axis of rotation of their respective gear wheel.
First claim
Opening claim text (preview).
The invention claimed is: 1. A control device for orientation of fan blades of a turboprop, comprising: at least one set of fan blades having adjustable orientation, the set being attached in rotation to a rotating ring mechanically linked to a rotor of a turbine, each blade of the set being coupled, for control of its orientation, to a blade root support mounted pivotably on the rotating ring by a conical gear train including a first gear wheel attached to the blade root support…
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Operations & Transport · mapped topic
Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
Operations & Transport · mapped topic
- F04D29/323Primary
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US8932018B2 cover?
- A device for controlling orientation of fan blades of a turboprop including at least one set of fan blades having adjustable orientation attached in rotation to a rotating ring mechanically connected to a turbine rotor. Each blade of the set is coupled to a blade root support pivotably mounted on the rotating ring by a conical gear train including a first gear wheel attached to the blade root s…
- Who is the assignee on this patent?
- Gallet Francois, Snecma
- What technology area does this patent fall under?
- Primary CPC classification F04D29/323. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 13 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).