Attachment pylon for a turbine engine

Patent metadata

Field	Value
Publication number	US-9938901-B2
Application number	US-201214356045-A
Country	US
Kind code	B2
Filing date	Oct 24, 2012
Priority date	Nov 3, 2011
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

A pylon for attaching a turbine engine, the pylon configured to connect the engine to a structural element of an aircraft. The pylon includes a streamlined profile defined by two opposite lateral faces and defined longitudinally between a leading edge and a trailing edge. On each of its lateral faces the pylon includes a series of deflectors that are transversely spaced apart from one another and that define between them convergent and curved channels configured to accelerate air streams flowing within the channels on aircraft takeoff or in flight to deflect the air streams towards a jet of the engine.

First claim

The invention claimed is:

1. A pylon for attaching a turbine engine, the pylon configured to connect the engine to a structural element of an aircraft, the pylon comprising:
a streamlined profile defined by two opposite lateral faces and defined in a longitudinal direction between a leading edge and a trailing edge; and
on each of the lateral faces, a respective series of deflectors that are spaced apart from one another in a transverse direction perpendicular to the longitudinal direction so that, between an outside wall of the engine and a first deflector and between the first deflector and a second deflector, or between the first deflector and the second deflector and between the second deflector and a third deflector, at least two channels are defined within which air streams flow on aircraft takeoff or in flight, each of the at least two channels being convergent, so that each of the at least two channels are of flow section that decreases progressively from upstream to downstream, and curved to accelerate the air streams and to guide the air streams towards a jet of the engine, the first deflector being closer to the outside wall of the engine than the second deflector in the transverse direction and the second deflector being closer to the outside wall of the engine than the third deflector in the transverse direction.

2. A pylon according to claim 1 , wherein the pylon extends transversely between a distal end for fastening to the engine and a proximal end for fastening to the structural element of the aircraft, and wherein the proximal portion of the pylon does not have deflectors.

3. A pylon according to claim 1 , wherein each deflector extends longitudinally from the leading edge of the pylon, an end of each deflector in a longitudinal direction of the pylon being coincident with the leading edge of the pylon.

4. A pylon according to claim 1 , wherein each deflector extends longitudinally towards the jet, a downstream end of each deflector being situated in proximity of the jet, while remaining outside the jet.

5. A pylon according to claim 1 , wherein each deflector presents a height, in a thickness direction of the pylon, in a range of 5% to 50% of diameter of the engine.

6. A pylon according to claim 1 , wherein each deflector is twisted to guide the air streams both towards the jet of the engine and into a wake of the pylon.

7. A device for an aircraft, comprising:
a turbine engine; and
a pylon according to claim 1 , whereby the engine can be connected to a structural element of the aircraft.

8. A device according to claim 7 , wherein the engine is an aeroengine and wherein the structural element is an airplane wing.

9. A device according to claim 7 , wherein the engine is a turbojet.

10. A pylon according to claim 1 , wherein the deflectors come progressively closer to one another while going in a direction from the leading edge toward the trailing edge of the pylon.

11. A pylon according to claim 1 , wherein the deflectors are fastened to the pylon entirely along a length of the deflectors in the longitudinal direction of the pylon.

Assignees

• Snecma

Inventors

• Bodard Guillaume
• Henry Cyprien
• Jodet Norman
• Vuillemin Alexandre Alfred Gaston

Classifications

• B64C2230/14

  achieving noise reductions · CPC title

• B64C7/02 Primary

  Nacelles · CPC title

• B64D29/02 Primary

  associated with wings · CPC title

• B64D27/18

  within, or attached to, wings · CPC title

• B64C21/10

  using other surface properties, e.g. roughness · CPC title