Additive manufactured permanent magnets in magneto strictive oscillating ice detector sensors
AssigneeRosemount Aerospace Inc.
InventorsJamison K. Roman, Matthew Webb
Life of this patent
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Abstract
An ice detection sensor apparatus includes a strut body extending along a longitudinal axis. The strut body includes an axially extending wall extending around the longitudinal axis to surround an interior space, and an axial-facing end wall connected to an axial end of the axially extending wall. The axial-facing end wall partially bounds the interior space. A magneto strictive oscillator sensing element extends from the interior space, through the axial-facing end wall. The sensing element is engaged to the axial-facing end wall for oscillation along the longitudinal axis relative to the axial-facing end wall. A permanent magnet (PMG) element is integral with, e.g., monolithic with, the strut body.
Claims15
An ice detection sensor apparatus comprising:
- a strut body extending along a longitudinal axis, the strut body including an axially extending wall extending around the longitudinal axis to surround an interior space, and an axial-facing end wall connected to an axial end of the axially extending wall, wherein the axial-facing end wall partially bounds the interior space;
- a magneto strictive oscillator sensing element extending from the interior space, through the axial-facing end wall, wherein the sensing element is engaged to the axial-facing end wall for oscillation along the longitudinal axis relative to the axial-facing end wall;
- an oscillation driver within the interior space operatively connected to the sensing element to drive oscillation of the sensing element;
- an oscillation detector within the interior space, operatively connected to detect oscillation of the sensing element for ice detection;
- and
- a permanent magnet (PMG) element monolithic with the strut body.
A method of making an ice detection sensor apparatus comprising:
- additively manufacturing a strut of a base material with an integrated permanent magnet (PMG) element, wherein the base material and PMG element are formed together layer by layer;
- assembling a magneto strictive oscillator sensing element, an oscillation driver operatively connected to the sensing element to drive oscillation of the sensing element, and an oscillation detector operatively connected to detect oscillation of the sensing element for ice detection in an interior space of the strut with a portion of the sensing element extending through the strut to a space exterior of the strut.
Dependencies are inferred from the claim text.