Resonant blades using an aperture for cancellation of propeller generated noise
US-9701394-B2 · Jul 11, 2017 · US
Device for reducing noise from jet-pylon interactions on jet engines
US8991749B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8991749-B2 |
| Application number | US-201113581050-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 25, 2011 |
| Priority date | Feb 26, 2010 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
An aircraft pylon for mounting a dual-flow or triple-flow jet engine, the pylon including an upper surface for connection to the aircraft, two side flanks, and a flange on the lower portion of the pylon. The pylon further includes at least one portion that extends downstream from the cold flow nozzle of the jet engine and lies in the cold flow and, on the portion thereof extending into the cold flow beyond the nozzle, at least one opening, positioned on one of the flanks of the pylon, by which an air stream is injected into or drawn from the gas flow that flows along the flanks of the pylon.
First claim
Opening claim text (preview).
The invention claimed is: 1. An aircraft pylon for supporting a turbojet engine that ejects a gas flow including a primary flow from a primary exit nozzle and a secondary flow from a secondary exit nozzle located radially outwardly with respect to the primary exit nozzle in a plane normal to a flow direction of the primary flow, thereby forming an inner shear layer at a boundary between the primary flow and the secondary flow, and an outer shear layer at a boundary between the seco…
Assignees
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Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Cross-Sectional Technologies · mapped topic
- B64C21/02Primary
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US8991749B2 cover?
- An aircraft pylon for mounting a dual-flow or triple-flow jet engine, the pylon including an upper surface for connection to the aircraft, two side flanks, and a flange on the lower portion of the pylon. The pylon further includes at least one portion that extends downstream from the cold flow nozzle of the jet engine and lies in the cold flow and, on the portion thereof extending into the cold…
- Who is the assignee on this patent?
- Dravet Alain, Julliard Jacques Michel Albert, Loheac Pierre Philippe Marie, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification B64C21/02. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 31 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).