Abstract: A tubular insert designed to be positioned in a through-orifice of a sandwich panel. This tubular insert comprises a tubular body and at least one tab that has a first end connected to the tubular body and a second end at a distance from the first end, the tab being able to move between a deployed position in which the second end is moved away from the tubular body and a retracted position in which the second end is positioned at the tubular body, the latter having, for each tab, a cutout delimiting the tab and an opening when the tab is in the deployed position. Also a sandwich panel having at least one such insert and a method for placing such an insert.

Abstract: A seal includes a barrel extending between a base and a top, in which the barrel has a cylindrical cavity passing through it between its base and its top, and a skirt indissociable from the barrel and extending around said barrel, in which the skirt adopts the shape of a dome of which the exterior edges extend out beyond the base starting from the top. The seal is able to divert the fluid and keep the space under the skirt fluid tight.

Abstract: An assembly comprising a nut, in addition to a retaining system which is configured to retain the hole of the nut substantially in the extension of a through-hole of a part. The retaining system comprises at least two resilient tabs which are configured to be housed in the through-hole of the part, the free ends of the resilient tabs being positioned, in the undeformed state, on a circle having a greater diameter than an internal diameter of the through-hole. Also a mounting system comprising such a retaining system for a nut.

Abstract: A sleeve fastening system fastened to a joist pierced with a hole and receiving two pipes and including a cylinder fitted into the hole of which each end receives a pipe, wherein the wall of the cylinder has cut into it at least one tunnel, a flange, each tunnel having openings that emerge on either side of the flange that has a bearing face bearing against the joist and a free face, and for each tunnel, a holding system having a link, a shoe and a locking system, the link being housed in the tunnel with the shoe blocked in a first opening on the side of the free face and wherein the link exits via a second opening on the side of the bearing face and wherein the locking system attaches.

Abstract: A pipe comprising at least one flexible duct, wherein the pipe comprises at least one stiffening band, which is pressed against the duct over at least some of its length, extends along a longitudinal direction substantially parallel to the axis of the duct and has, at least in one state, considerable rigidity along the longitudinal direction, the stiffening band being configured to deform elastically between a rolled-up state, when the cross sections of the stiffening band are rectilinear, and an elongate and rigid state, when the cross sections of the stiffening band are curved. An aircraft comprising at least one such pipe.

Abstract: A tool for laying a sealing strip around a protruding part of a connecting element protruding from a bearing surface, the laying tool including an annular duct having an outer surface configured to delimit, with the bearing surface and the protruding part, a cavity when the annular duct is positioned around the protruding part and in contact with the bearing surface, the annular duct including at least one orifice for supplying pasty composition and outlet orifices for injecting the pasty composition into the cavity to form the sealing strip. A method for laying a sealing strip using the tool is disclosed and an aircraft with at least one sealing strip obtained using the method.

Abstract: A pipe of an air duct comprising, from the interior toward the exterior, an internal layer, at least one insulating intermediate layer, an external layer and at least at one of its ends a pipe coupling distinct from the internal layer including a first end section that cooperates with the internal layer in sealed manner and a second end section not covered by any of the layers that is configured to cooperate with a connection system. Thus, no clamp of a connection system exerts compression forces on the internal layer of the pipe, which consequently is not necessarily reinforced by means of fibers.

Abstract: A seal includes a barrel extending between a base and a top, in which the barrel has a cylindrical cavity passing through it between its base and its top, and a skirt indissociable from the barrel and extending around said barrel, in which the skirt adopts the shape of a dome of which the exterior edges extend out beyond the base starting from the top. The seal is able to divert the fluid and keep the space under the skirt fluid tight.