Abstract: A hatch-actuating mechanism, particularly for aircraft landing gear. The mechanism includes a lateral closing panel (1) and a secondary closing panel (4) articulated to one another. A lateral pivoting fitting (5) is joined to the lateral panel (1) and pivots about a fixed point on the structure (7). A secondary pivoting fitting (8) is joined to the secondary panel (4). A lateral actuating cylinder (10) controls the movement of the lateral panel. An intermediate actuating cylinder controls the movement of the secondary panel, the intermediate actuating cylinder (13) being actuatable independently from the lateral actuating cylinder (10).

Abstract: Device for facilitating the lowering of a landing gear by gravity, comprising at least on roller device (4) positioned on at least one closing panel (2) of the hatch for the landing gear in a contact area with the tire (1a) of the landing gear of an aircraft (7) on initiating its descent, the roller device (4) comprising a rigid roller device which can rotate freely about its axis (4a), and being positioned such that its axis is perpendicular to the path of the tire (1a) so that the tire will make the roller device (4) turn without sliding over it.