Patent ID: 7677497
Filing Date: 2010-03-16
Classification: B64C,B64D

Abstract:
1. A hatch-actuating mechanism, for an aircraft landing gear, comprising a lateral closing panel dimensioned to cover, in hatch-closed position, a first lateral area of an access opening to an interior space, leaving free a first strip neighboring said first lateral area; a secondary closing panel dimensioned to cover, in hatch-closed position, at least part of the first strip, which is not covered by the lateral panel; a lateral pivoting fitting rotatably connected via a first lateral articulation to a first fixed structure which is located laterally in said interior space; a secondary pivoting fitting to which said secondary panel is connected at the bottom; the secondary pivoting fitting being rotatably connected to the lateral pivoting fitting via a first intermediate articulation; lateral actuating means selected from the group consisting of a hydraulic actuating cylinder and a pneumatic actuating cylinder, rotatably connected by its first end part to the first fixed structure via a second lateral articulation, and rotatably connected by its second end part to the lateral pivoting fitting via a second intermediate articulation, the second intermediate articulation being arranged in a position between the first lateral articulation and the first intermediate articulation such that the actuation of said lateral actuating cylinder tilts the lateral pivoting fitting with the lateral panel from a closed position in which the lateral panel covers said first lateral area, to an open position in which said lateral panel does not cover said first lateral area; intermediate actuating means selected from the group consisting of a hydraulic actuating cylinder and a pneumatic actuating cylinder, rotatably connected by its first end part to the lateral pivoting fitting via a third intermediate articulation in a position between said first lateral articulation and said first intermediate articulation, and a second end part rotatably connected to the secondary pivoting fitting via a fourth intermediate articulation; in such a manner that it is possible to keep the secondary panel in an inward folded position while the hatch is closed only by the lateral closing panel, and tilt the secondary pivoting fitting with the secondary panel from a folded position in which they are tilted toward the lateral pivoting fitting and said secondary panel does not cover said first strip, and a unfolded position in which they are tilted in a direction opposite said lateral pivoting fitting, so that, when the lateral panel is in the closed position, the secondary panel forms a joint exterior surface with said lateral panel and covers said first strip at least partially.