FIELD: selecting particular materials.
SUBSTANCE: gas turbine engine comprises an axial casing of a low pressure turbine of a metallic material at the outlet of which an axial exhaust casing of a composite material is installed, and also an elastic fastening device that connects said casings with each other, a flexible coupling member and a rigid blocking member. Flexible coupling element comprises a first fixing portion associated with the axial housing of the low pressure turbine by a first axial coupling, and a second fixing part associated with the axial exhaust shell with a second axial coupling. Flexible coupling element comprises an axially disposed free end. Rigid blocking member comprises a fixing portion associated with the axial housing of the low pressure turbine by a first axial coupling, and an axially free end, radially aligned with the free end of the flexible coupling element, and forming the stop means of the latter in the case of radial deformation of the flexible coupling element during operation of the engine.
EFFECT: invention makes it possible to improve the reliability of the connection between the metal and composite parts of the gas turbine engine.
10 cl, 4 dwg
