Aircraft turbojet engine nacelle

Patent metadata

Field	Value
Publication number	US-2017327240-A1
Application number	US-201715655276-A
Country	US
Kind code	A1
Filing date	Jul 20, 2017
Priority date	Jan 21, 2015
Publication date	Nov 16, 2017
Grant date	—

Abstract

The present disclosure relates to an aircraft turbojet engine nacelle, the nacelle including a rear section without a lower bifurcation, the rear section including a thrust reversal system, the thrust reversal system including a mobile cowl. The nacelle includes a guide system that translates as one with the mobile cowl, the guide system collaborating with at least one slide that is fixed in relation to the nacelle, the guide system and the slide being arranged near the position referred to as the 6 o'clock position.

First claim

What is claimed is:

1 . An aircraft turbojet engine nacelle comprising:
a rear section without a lower bifurcation, wherein the rear section includes a thrust reverser system, the thrust reverser system including a movable cowl; and a guide system translatably secured to the movable cowl,
wherein the guide system cooperates with at least one crosshead fixed relative to the nacelle, and
wherein the guide system and the crosshead are disposed at a “6 o'clock” position.

2 . The nacelle according to claim 1 , wherein the crosshead cooperates with the guide system by at least one bearing member, wherein the crosshead is shaped such that a spacing, along a translation direction of the guide system, between farthest bearing points of the crosshead is less than one fifth of a guiding length provided by the guide system.

3 . The nacelle according to claim 2 , wherein the bearing member is a pad.

4 . The nacelle according to claim 1 , wherein the crosshead is secured to a peripheral frame that is fastened to at least one of a fan casing of a turbojet engine and a fan casing.

5 . The nacelle according to claim 1 , wherein the guide system includes a guide rail.

6 . The nacelle according to claim 5 , wherein the guide rail includes two slides.

7 . The nacelle according to claim 6 , wherein the crosshead includes at least two guide pads, each of the guide pads cooperating with one of the two slides of the guide rail.

8 . The nacelle according to claim 1 , wherein the thrust reverser system includes thrust reverser cascades.

9 . The nacelle according to claim 8 , wherein the thrust reverser cascades are sliding.

10 . The nacelle according to claim 9 , wherein a front end of the guide system is secured to a front peripheral frame, the front peripheral frame being secured to the thrust reverser cascades.

11 . The nacelle according to claim 8 , wherein the guide system is disposed between two thrust reverser cascades.

12 . The nacelle according to claim 11 , wherein the guide system is disposed at a location normally occupied by a solid cascade.

13 . The nacelle according to claim 10 , wherein the guide system is secured to a front peripheral frame.

14 . The nacelle according to claim 1 , wherein a rear end of the guide system is secured to a peripheral frame of the movable cowl.

15 . The nacelle according to claim 1 , wherein the guide system is extended by a beam secured to the movable cowl.

16 . An aircraft propulsion unit, including a bypass turbojet engine, the

1 . on unit including a nacelle according to claim 1 .

15 . An aircraft including at least one propulsion unit in accordance with claim 14 , the propulsion unit being supported by a pylon, the pylon including guide rails of the movable cowl of the nacelle.

Assignees

• Safran Nacelles

Inventors

• Kerbler Olivier
• Metezeau Fabrice Henri Emile
• Gonidec Patrick
• Grall Loïc

Classifications

• F02K1/72 Primary

  the aft end of the fan housing being movable to uncover openings in the fan housing for the reversed flow · CPC title

• F05D2220/323

  for aircraft propulsion, e.g. jet engines · CPC title

• B64D29/06 Primary

  Attaching of nacelles, fairings or cowlings · CPC title

• B64D27/16

  of jet type · CPC title

• B64D33/04 Primary

  of exhaust outlets or jet pipes · CPC title