Aircraft having an engine pylon with a mobile cowl

Patent metadata

Field	Value
Publication number	US-12371181-B2
Application number	US-202318541513-A
Country	US
Kind code	B2
Filing date	Dec 15, 2023
Priority date	Dec 19, 2022
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

An aircraft having a fixed structure, an engine pylon, and a cowling system, a slider bearing a rear cowl and able to move in translation from an advanced position to a retracted position, a displacement system having, on either side of a median plane of the engine pylon, a guide as one with the fixed structure, a sliding element as one with the slider and sliding along each guide disposed on the same side, and a support as one with the fixed structure and having a blade parallel to the translation direction and on which a surface parallel to the translation direction of the slider rests. The presence of the mobile cowl ensures, inter alia, easy access to the inside of the engine pylon and to the systems that are housed therein.

First claim

The invention claimed is:

1. An aircraft comprising:
a fixed structure,
a wing,
an engine, and
an engine pylon fastened between the wing and the engine, the engine pylon having a primary structure configured to fasten the engine and the wing to each other, and a cowling system having:
a front set of cowls, wherein the cowls are fastened around the primary structure,
a slider bearing a mobile rear cowl disposed in a continuation of and at a rear of the front set of cowls, wherein the slider is able to move in translation parallel to a translation direction from an advanced position, in which the mobile rear cowl is in the continuation of and at the rear of the front set of cowls, to a retracted position, in which the mobile rear cowl is moved away, towards the rear, from the front set of cowls,
a displacement system configured to move said slider and having, on either side of a median plane of the engine pylon, at least one guide as one with the fixed structure at a rear part of the mobile rear cowl in the advanced position, for each at least one guide, a sliding element as one with the slider and mounted so as to be able to slide along each guide disposed on the same side so as to realize a sliding connection, and, for each sliding element, a support as one with the fixed structure and having a blade parallel to the translation direction and on which a surface parallel to the translation direction of the slider rests, wherein each support is disposed at a front of the guides and generally in a middle of the sliding element when the slider is in the advanced position, and
an immobilizing system alternately adopting a locked position in which the immobilizing system immobilizes the slider in the advanced position, and an unlocked position in which it does not immobilize the slider.

2. The aircraft according to claim 1 ,
wherein each sliding element has a cylinder parallel to the translation direction of which a length is at least equal to a length of displacement of the slider, and
wherein each guide has a bore parallel to the translation direction in which said cylinder is mounted so as to be able to slide.

3. The aircraft according to claim 1 ,
wherein the fixed structure has a bottom front centering pin,
wherein the slider has a first housing in which said bottom front centering pin is housed when the slider arrives in the advanced position, and
wherein the first housing is disposed at the median plane and in a bottom part and at the front of the mobile rear cowl.

4. The aircraft according to claim 1 ,
wherein the slider has two top front centering pins disposed on either side of the median plane and in a top part and at the front of the mobile rear cowl, and
wherein the fixed structure has, for each top front centering pin, a second housing in which said top front centering pin is housed when the slider arrives in the advanced position.

5. The aircraft according claim 1 ,
wherein the slider has two rear centering pins disposed on either side of the median plane and in a top part and near the guides in the advanced position, and
wherein the fixed structure has, for each rear centering pin, a third housing in which said rear centering pin is housed when the slider arrives in the advanced position.

Assignees

• Airbus Operations Sas

Inventors

• Pautis Olivier
• Messina Paolo
• Blanc Jonathan
• Robiglio Thomas
• Firmignac Thomas

Classifications

• B64D29/02 Primary

  associated with wings · CPC title

• B64D27/40

  Arrangements for mounting power plants in aircraft · CPC title

• B64D27/402

  comprising box like supporting frames, e.g. pylons or arrangements for embracing the power plant · CPC title

• B64D29/06 Primary

  Attaching of nacelles, fairings or cowlings · CPC title

• B64D29/08

  Inspection panels for power plants · CPC title