Embodiments of a method and a mold for producing a concrete pipe comprising a basic body made of concrete and a plastic inner pipe for conducting a liquid. The method comprises introducing a mold core into the plastic inner pipe, introducing the plastic inner pipe into an outer mold and pouring concrete into an intermediate space between the outer mold and the plastic inner pipe to form the basic body. After the concrete has solidified, the plastic inner pipe remains as inner formwork in the basic body made of concrete and the mold core is removed.

Embodiments of a method and a mold for producing a concrete pipe comprising a basic body made of concrete and a plastic inner pipe for conducting a liquid. The method comprises introducing a mold core into the plastic inner pipe, introducing the plastic inner pipe into an outer mold and pouring concrete into an intermediate space between the outer mold and the plastic inner pipe to form the basic body. After the concrete has solidified, the plastic inner pipe remains as inner formwork in the basic body made of concrete and the mold core is removed.

A combustion assembly for a gas turbine engine may be provided. The combustion assembly may include a ceramic matrix composite combustor shell, which may include a chamber defined by a wall of the ceramic matrix composite combustor shell, and the ceramic matrix composite combustor shell may include a ceramic matrix composite chute integral with the ceramic matrix composite combustor shell. The ceramic matrix composite chute may extend towards a midline of the chamber. A method for fabricating a ceramic matrix composite chute may be provided. At least one chute may be woven in three dimensions into a ceramic preform. A layup tool may be inserted into the chute. The chute may be enlarged with the layup tool. The ceramic preform may be formed into a ceramic matrix composite body, which includes a combustor shell and the chute.

A combustion assembly for a gas turbine engine may be provided. The combustion assembly may include a ceramic matrix composite combustor shell, which may include a chamber defined by a wall of the ceramic matrix composite combustor shell, and the ceramic matrix composite combustor shell may include a ceramic matrix composite chute integral with the ceramic matrix composite combustor shell. The ceramic matrix composite chute may extend towards a midline of the chamber. A method for fabricating a ceramic matrix composite chute may be provided. At least one chute may be woven in three dimensions into a ceramic preform. A layup tool may be inserted into the chute. The chute may be enlarged with the layup tool. The ceramic preform may be formed into a ceramic matrix composite body, which includes a combustor shell and the chute.