Abstract: An assembly for an aircraft turbo machine having a plurality of sectors made of a CMC and a plurality of sealing tongues which are mounted between the sectors. Each of these tongues include a first longitudinal edge engaged in a slot in a lateral edge of one of the sectors, and a second longitudinal edge engaged in a slot in a lateral edge of an adjacent sector. Each of the first and second edges have a rectilinear intermediate portion extending between two end portions of convex curved shape. The slots can have shapes complementary to these portions wherein contact of the tongue in the slot over the entire longitudinal extent of the tongue is ensured. An aircraft turbomachine can include at least one such assembly.

Abstract: An assembly for an aircraft turbo machine having a plurality of sectors made of a CMC and a plurality of sealing tongues which are mounted between the sectors. Each of these tongues include a first longitudinal edge engaged in a slot in a lateral edge of one of the sectors, and a second longitudinal edge engaged in a slot in a lateral edge of an adjacent sector. Each of the first and second edges have a rectilinear intermediate portion extending between two end portions of convex curved shape. The slots can have shapes complementary to these portions wherein contact of the tongue in the slot over the entire longitudinal extent of the tongue is ensured. An aircraft turbomachine can include at least one such assembly.

Abstract: A porous ceramic structure intended to form the reinforcement of a ceramic matrix composite component, the structure having a connected porosity delimited by an internal surface which includes a plurality of first points, each first point being associated with a second point aligned with this first point along a normal to the internal surface taken at the first point, the structure being divisible into a plurality of unit volumes of a size less than or equal to 5 mm3 in each of which: a characteristic pore length, corresponding to the maximum of the distance separating each first point from its associated second point, is less than or equal to 0.5 mm; and a porosity ratio is greater than or equal to 50%.

Abstract: A turbomachine subassembly including a first component forming a portion of a wall of a combustion chamber of the turbomachine and a second component forming a connecting member connecting the first component to a structural element of the combustion chamber, wherein the two components are made from materials having different coefficients of expansion, and wherein the two components are elements of revolution coaxial with a main axis A of the subassembly, and each including an annular radial wall, the radial walls facing one another and bearing against one another axially in a first direction, wherein the second component includes a plurality of clamping tabs, with the clamping tabs collaborating with the first component in order to produce an axial force causing the radial walls to bear against one another.

Abstract: A turbomachine subassembly including a first component forming a portion of a wall of a combustion chamber of the turbomachine and a second component forming a connecting member connecting the first component to a structural element of the combustion chamber, wherein the two components are made from materials having different coefficients of expansion, and wherein the two components are elements of revolution coaxial with a main axis A of the subassembly, and each including an annular radial wall, the radial walls facing one another and bearing against one another axially in a first direction, wherein the second component includes a plurality of clamping tabs, with the clamping tabs collaborating with the first component in order to produce an axial force causing the radial walls to bear against one another.

Abstract: A method for producing a hollow part made of a ceramic matrix composite material. The method includes shaping a hollow fibrous preform. A core of oxidizable material is housed or inserted into the preform. The method also includes consolidating the preform and extracting the core by oxidising the core.

Abstract: A porous ceramic structure intended to form the reinforcement of a ceramic matrix composite component, the structure having a connected porosity delimited by an internal surface which includes a plurality of first points, each first point being associated with a second point aligned with this first point along a normal to the internal surface taken at the first point, the structure being divisible into a plurality of unit volumes of a size less than or equal to 5 mm3 in each of which: a characteristic pore length, corresponding to the maximum of the distance separating each first point from its associated second point, is less than or equal to 0.5 mm; and a porosity ratio is greater than or equal to 50%.

Abstract: The invention relates to a method for producing a hollow part made of a ceramic matrix composite material comprising the steps of: shaping a hollow fibrous preform, a core of oxidizable material being housed or inserted into the preform (E1); consolidating said preform (E3, E4); and extracting the core by oxidising said core (E5).