Phonic wheel for turbine engine
An assembly is provided for a turbine engine. This turbine engine assembly includes a rotating assembly configured to rotate about an axis. The rotating assembly includes an engine component and a phonic wheel. The engine component includes a first material and a plurality of apertures arranged circumferentially about the axis. The phonic wheel includes a second material and a plurality of teeth arranged circumferentially about the axis. Each of the teeth projects axially into a respective one of the apertures. One of the first material and the second material is or otherwise includes non-ferromagnetic material. Another one of the first material and the second material is or otherwise includes ferromagnetic material.
1. An assembly for a turbine engine, comprising:
a rotating assembly configured to rotate about an axis, the rotating assembly including an engine component and a phonic wheel;
the engine component comprising a first material and a plurality of apertures arranged circumferentially about the axis; and
the phonic wheel comprising a second material and a plurality of teeth arranged circumferentially about the axis, each of the plurality of teeth projecting axially into a respective one of the plurality of apertures;
one of the first material and the second material comprising non-ferromagnetic material, and another one of the first material and the second material comprising ferromagnetic material; and
wherein the engine component is configured as an engine shaft.
2. The assembly of claim 1 , further comprising a sensor configured to measure fluctuations in a magnetic field induced by the plurality of teeth during rotation of the rotating assembly about the axis.
3. The assembly of claim 2 , further comprising:
a sensor system comprising the phonic wheel and the sensor;
the sensor system configured to determine a rotational velocity of the rotating assembly.
4. The assembly of claim 2 , wherein a tip of the sensor is disposed radially outboard of and adjacent the plurality of teeth.
5. The assembly of claim 1 , wherein the phonic wheel is mounted on the engine component.
6. The assembly of claim 1 , wherein
the phonic wheel further comprises a base;
each of the plurality of teeth project axially out from a first side of the base; and
the first side of the base axially engages the engine component.
7. The assembly of claim 1 , wherein
the plurality of apertures comprise a first aperture with a lateral aperture width;
the plurality of teeth comprise a first tooth with a lateral tooth width; and
the lateral tooth width is within ten percent of the lateral aperture width.
8. The assembly of claim 1 , wherein
the plurality of teeth comprise a first tooth with a lateral tooth width;
the first tooth is laterally separated from the engine component by a gap with a lateral gap width less than ten percent of the lateral tooth width.
9. The assembly of claim 1 , wherein
the plurality of teeth comprise a first tooth with an axial tooth length;
the first tooth is axially separated from the engine component by a gap with an axial gap width less than ten percent of the axial tooth length.
10. The assembly of claim 1 , wherein
each of the plurality of teeth has a lateral width; and
each circumferentially neighboring pair of the plurality of teeth are spaced apart by a lateral distance that is equal to or greater than the lateral width.
11. The assembly of claim 1 , wherein
the engine component further comprises a component outer surface, and each of the plurality of apertures projects radially into the engine component from the component outer surface; and
the plurality of teeth comprise a first tooth with a tooth outer surface which is radially flush with the component outer surface.
12. The assembly of claim 11 , wherein
the rotating assembly further includes a lubricant scoop radially outboard of and axially overlapping the component outer surface; and
a lubricant collection area is formed by and radially between the engine component and the lubricant scoop.
13. The assembly of claim 1 , wherein
the rotating assembly further includes a lubricant scoop;
the lubricant scoop is radially outboard of and axially overlaps the engine component, and the lubricant scoop is axially adjacent the phonic wheel; and
a lubricant collection area is formed by and radially between the engine component and the lubricant scoop.
14. The assembly of claim 1 , further comprising a bearing rotatably supporting the rotating assembly.
15. The assembly of claim 1 , wherein the rotating assembly further comprises a bladed rotor connected to the engine component.
16. An assembly for a turbine engine, comprising:
a rotating assembly configured to rotate about an axis, the rotating assembly including an engine component and a phonic wheel;
the engine component comprising non-ferromagnetic material and a plurality of component teeth arranged circumferentially about the axis; and
the phonic wheel comprising ferromagnetic material and a plurality of wheel teeth arranged circumferentially about the axis, the plurality of wheel teeth meshed with the plurality of component teeth; and
a sensor configured to measure fluctuations in a magnetic field induced by the plurality of wheel teeth during rotation of the rotating assembly about the axis; and
wherein the engine component is configured as an engine shaft.