Gas ejection cone for aircraft turbojet engines

Patent metadata

Field	Value
Publication number	US-9611807-B2
Application number	US-201414484684-A
Country	US
Kind code	B2
Filing date	Sep 12, 2014
Priority date	Mar 20, 2012
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

A gas ejection cone includes a cylindrical-shaped front cone portion, a conical-shaped rear cone portion, a ventilation tube and a support bearing of this drainage and/or ventilation tube. The ventilation tube extends inside the cylindrical-shaped front and conical-shaped rear cone portions and emerges at the end of the conical-shaped rear cone portion. In particular, the conical-shaped rear cone portion includes a front sub-portion connected to the cylindrical-shaped front cone portion, and a rear sub-portion removably secured to the front sub-portion. The rear sub-portion is further equipped with an outlet port of the ventilation tube.

First claim

What is claimed is:

1. A gas ejection cone, comprising:
a cylindrical-shaped front cone portion;
a conical-shaped rear cone portion;
a drainage and/or ventilation tube extending inside the cylindrical-shaped front cone portion and the conical-shaped rear cone portion, the drainage and/or ventilation tube emerging at an end of the conical-shaped rear cone portion; and
a support bearing of the drainage and/or ventilation tube which is disposed inside the conical-shaped rear cone portion,

wherein the conical-shaped rear cone portion is fixed and comprises a front sub-portion secured fixedly to the cylindrical-shaped front cone portion, and a rear sub-portion secured fixedly to the front sub-portion such that the front and rear sub-portions cannot rotate relative to the cylindrical-shaped front cone portion, the rear sub-portion being equipped with an outlet port of the drainage and/or ventilation tube and being removable from the front sub-portion in order to inspect an inside of the gas ejection cone.

2. The gas ejection cone according to claim 1 , wherein said support bearing is secured inside the front sub-portion.

3. The gas ejection cone according to claim 1 , wherein said support bearing is secured inside the rear sub-portion.

4. The gas ejection cone according to claim 1 , wherein said support bearing is held in place by edges of the front and rear sub-portions.

5. The gas ejection cone according to claim 1 , wherein said support bearing presents an annular shape.

6. The gas ejection cone according to claim 1 , wherein a length of said rear sub-portion configured for installation and inspection.

7. The gas ejection cone according to claim 1 , wherein a largest diameter of the rear sub-portion is between 10% and 20% of a largest diameter of the front sub-portion.

8. The gas ejection cone according to claim 1 , wherein a largest diameter of the front sub-portion is between 80% and 95% of a largest diameter of the cylindrical-shaped front cone portion.

9. The gas ejection cone according to claim 1 , wherein the cylindrical-shaped front cone portion and the front sub-portion are irremovably connected to each other.

10. The gas ejection cone according to claim 1 , wherein the support bearing is clamped between an edge of the front sub-portion and an edge of the rear sub-portion when the rear sub-portion is secured on the front sub-portion.

11. The gas ejection according to claim 1 , wherein the drainage and/or ventilation tube is maintained centered inside the gas ejection cone by the support bearing situated at an interface between the front sub-portion and the rear sub-portion.

12. A nacelle equipped with the gas ejection cone according to claim 1 .

Assignees

• Aircelle Sa

Inventors

• Soulier Pascal-Marie Paul Marcel
• Guillon Jean-Bernard
• Guegou Jean-Pierre

Classifications

• F02K1/04 Primary

  Mounting of an exhaust cone in the jet pipe · CPC title

• F02K1/36 Primary

  having an ejector · CPC title

• B64C7/02

  Nacelles · CPC title