Cascade thrust reverser for an aircraft turbojet engine

摘要

The present disclosure relates to a cascade thrust reverser providing that when a sliding cowl and a flap are in a direct jet position, a hook is held in engagement with another hook and the flap is immobilized inside of a housing of the sliding cowl by a stem of a telescopic connecting rod subjected to pre-stress generated by a compressed spring located in the body of the connecting rod. When the sliding cowl starts to slide from the direct jet position toward the reverse jet position, the hooks disengage each other and the stem engages with an extension in the body of the connecting rod, so that the flap is rotated from the direct jet position toward the reverse jet position due to the tensile force exerted by the stem.

主权项

1. A cascade thrust reverser, comprising:
a stationary front frame; a plurality of deviation cascades integral with the stationary front frame; a sliding cowl movable between a direct jet position where the sliding cowl covers the deviation cascades, and a reverse jet position in which the sliding cowl uncovers the deviation cascades; at least one housing for receiving at least one thrust reversal flap formed in an upstream part of the sliding cowl, at least one thrust reversal flap pivotally mounted in said at least one housing, between a direct jet position where said at least one thrust reversal flap is arranged inside said at least one housing, and a reverse jet position in which said at least one thrust reversal flap exits said at least one housing; a connecting rod mechanism comprising a telescopic connecting rod connecting the stationary front frame to said at least one flap, the connecting rod mechanism configured to make said at least one flap swivel from the direct jet position to the reverse jet position as a result of sliding of the sliding cowl from the direct jet position to the reverse jet position; and a first hook mounted stationary on the inside of said at least one housing, wherein the telescopic connecting rod comprises: a body provided with a second hook, the second hook being integral with the body, and the second hook which is engaged with the first hook in the direct jet position and disengaged when the sliding cowl translates toward the reverse jet position; a stem slidably mounted inside the body; a spring returning the stem in extension position with respect to the body; and a stop preventing the stem from exiting the body, wherein the stem extends through the stop wherein in the direct jet position, said at least one flap is immobilized at a bottom of said at least one housing by the stem subjected to pre-stress caused by the spring compressed, and when the second hook becomes disengaged from the first hook, the stem engages with an extension in the body, allowing a rotation of said at least one flap from the direct jet position towards the reverse jet position under a tensile force exerted by the stem.