Stator retention of gas turbine engine
A stator vane assembly of a gas turbine engine includes a stator shroud having a plurality of shroud openings formed therein. The stator shroud defines a flowpath surface. The assembly includes a plurality of stator vanes, one stator vane of the plurality of stator vanes installed in each shroud opening of the stator shroud. A volume of potting material is located in the plurality of shroud openings to retain the stator vanes thereat. One or more retainers are located at a back surface of the stator shroud opposite the flowpath surface to restrict circumferential movement of the plurality of stator vanes relative to the stator shroud.
1. A stator vane assembly of a gas turbine engine, comprising:
a stator shroud having a plurality of shroud openings formed therein, the stator shroud defining a flowpath surface;
a plurality of stator vanes, one stator vane of the plurality of stator vanes installed in each shroud opening of the stator shroud;
a volume of potting material disposed in the plurality of shroud openings to retain the stator vanes thereat; and
two retainers disposed on each stator vane of the plurality of stator vanes at a back surface of the stator shroud opposite the flowpath surface to restrict circumferential movement of the plurality of stator vanes relative to the stator shroud;
wherein each retainer includes:
a first retainer leg extending in a vane spanwise direction through a shroud opening of the plurality of shroud openings at a first side of the stator vane;
a second retainer leg extending in the vane spanwise direction through the shroud opening at a second side of the stator vane opposite the first side; and a cap connecting the first retainer leg to the second retainer leg;
each of the first retainer leg and the second retainer leg including a rectangular leg extension extending circumferentially into a respective recess in the flowpath surface.
2. The stator vane assembly of claim 1 , wherein at least one of the first retainer legs and the second retainer legs contact one or more of a stator vane of the plurality of stator vanes or the stator shroud at a shroud opening of the plurality of shroud openings.
3. A gas turbine engine, comprising:
a combustor;
a turbine in flow communication with the combustor; and
a stator assembly, including:
a stator shroud having a plurality of shroud openings formed therein, the stator shroud defining a flowpath surface;
a plurality of stator vanes, one stator vane of the plurality of stator vanes installed in each shroud opening of the stator shroud;
a volume of potting material disposed in the plurality of shroud openings to retain the stator vanes thereat; and
two retainers disposed on each stator vane of the plurality of stator vanes at a back surface of the stator shroud opposite the flowpath surface to restrict circumferential movement of the plurality of stator vanes relative to the stator shroud;
wherein each retainer includes:
a first retainer leg extending in a vane spanwise direction through a shroud opening of the plurality of shroud openings at a first side of the stator vane;
a second retainer leg extending in the vane spanwise direction through the shroud opening at a second side of the stator vane opposite the first side; and a cap connecting the first retainer leg to the second retainer leg;
each of the first retainer leg and the second retainer leg including a rectangular leg extension extending circumferentially into a respective recess in the flowpath surface.
4. The gas turbine engine of claim 3 , wherein at least one of the first retainer legs and the second retainer legs contact one or more of a stator vane of the plurality of stator vanes or the stator shroud at a shroud opening of the plurality of shroud openings.
5. The stator vane assembly of claim 1 , wherein each of the first retainers and the second retainers are formed from a plastic material.
6. The stator vane assembly of claim 1 , wherein each of the first retainer legs and the second retainer legs are rectangular.