Thrust reverser for a turbojet engine nacelle comprising an end-of-travel stop on the primary guide rail

Patent metadata

Field	Value
Publication number	US-2016281640-A1
Application number	US-201615076907-A
Country	US
Kind code	A1
Filing date	Mar 22, 2016
Priority date	Sep 23, 2013
Publication date	Sep 29, 2016
Grant date	—

Abstract

The present disclosure relates to a thrust reverser for a turbojet engine nacelle, including cowls that move backwards to open the thrust reverser. Each cowl includes a primary axial guide rail that receives most of the loads of the cowl, and secondary rails guiding an outer portion of each cowl. The thrust reverser includes a rear end stop for each cowl is arranged on the primary axial guide rails.

First claim

What is claimed is:

1 . A thrust reverser for a turbojet engine nacelle comprising cowls moving backwards to open the thrust reverser, each cowl including a primary axial guide rail supporting loads of its respective cowl, and a secondary rail guiding an outer portion of its respective cowl, a rear end-of-travel stop for each cowl being disposed on each primary rail, and a movable device to deactivate the rear end-of-travel stop, wherein the thrust reverser includes a device compelling an operator to put the movable device of the end-of-travel stop back in an activated position before closing up a nacelle assembly.

2 . The thrust reverser according to claim 1 , wherein the end-of-travel stop includes a blocking device allowing the end-of-travel stop to be held in a deactivated position.

3 . The thrust reverser according to claim 2 , wherein the blocking device includes a spring which holds the blocking device in a blocking position.

4 . The thrust reverser according to claim 2 , wherein the movable device includes a sliding stop finger, comprising transverse grooves in which the blocking device can be engaged.

5 . The thrust reverser according to claim 2 , wherein when the nacelle is completely closed up, in a position where the end-of-travel stop is deactivated, the stop finger is positioned to generate an interference with an outer panel of the nacelle assembly.

6 . The thrust reverser according to claim 1 , wherein when the cowls are open, a small axial clearance interposed between a movable portion and a fixed portion of the end-of-travel stop is calculated as a lower threshold value depending on tolerances and deformations of different elements so that, during a normal operation, the movable portion and the fixed portion do not come into contact with each other.

7 . A turbojet engine nacelle comprising a thrust reverser according to claim 1 , which can axially slide under an effect of an actuator.

8 . The turbojet engine nacelle according to claim 7 , wherein after an absence or failure of a control cylinder of a cowl, an open cowl being bent, the movable device being in phase advance relative to a normally provided movement of the cowl, a clearance is calculated for an actual opening of the cowl slightly lower than 100%.

Assignees

• Aircelle Sa

Inventors

• Loncle Alexis

Classifications

• E05B63/185

  Preventing actuation of a bolt when the wing is open (E05B63/20 takes precedence, similar safety devices E05D15/526) · CPC title

• F02K1/766 Primary

  with blocking systems or locking devices; Arrangement of locking devices for thrust reversers · CPC title

• F02K1/72

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

• E05B63/18

  with arrangements independent of the locking mechanism for retaining the bolt {or latch} in the retracted position · CPC title

• F02K1/80

  Couplings or connections · CPC title