Additively manufactured heaters for air data probes

Patent metadata

Field	Value
Publication number	US-12447502-B2
Application number	US-202217589343-A
Country	US
Kind code	B2
Filing date	Jan 31, 2022
Priority date	Aug 20, 2019
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

An air data probe includes an air data probe body and an additively manufactured heater on the air data probe body.

First claim

The invention claimed is:

1. A method of forming a heater on an air data probe, the method comprising:
additively manufacturing a first heater layer onto the air data probe;
depositing a first dielectric layer directly onto the first heater layer;
additively manufacturing a second heater layer directly onto the first dielectric layer; and
depositing a second dielectric layer directly onto the second heater layer, and
wherein the first dielectric layer is between the first heater layer and the second heater layer, and wherein the second heater layer is between the first dielectric layer and the second dielectric layer.

2. The method of claim 1 , further comprising trimming the heater.

3. The method of claim 1 , wherein the first heater layer is additively manufactured directly onto an air data probe body of the air data probe, and wherein the air data probe body is non-metallic.

4. The method of claim 1 , wherein the first heater layer is additively manufactured directly onto a third dielectric layer on an air data probe body of the air data probe such that the first heater layer is between the first dielectric layer and the third dielectric layer, and wherein the air data probe body is metallic.

5. The method of claim 1 , wherein the heater is additively manufactured using a technology selected from the group consisting of: aerosol jet printing, plasma spraying, thermal spraying, sputtering, and atomic layer deposition.

6. The method of claim 1 , wherein the heater layer is made of one or more materials selected from the group consisting of: silver, copper, PTC, ruthenium, silver-palladium, platinum, and tungsten.

7. The method of claim 6 , wherein the second dielectric layer makes up an exterior surface of the heater.

8. The method of claim 1 , wherein the heater layer is made of a first material and a second material.

9. The method of claim 1 , wherein the first dielectric layer is made of xylene resin, alumina, PEKK, or aluminum nitride.

10. The method of claim 1 , further including additively manufacturing a temperature sensor onto the air data probe.

11. The method of claim 10 , wherein the temperature sensor includes a sensor connected to conductive lines.

12. The method of claim 11 , wherein the conductive lines of the temperature sensor are parallel to the heater.

13. The method of claim 11 , further including delivering resistance of the sensor of the temperature sensor via the conductive lines of the temperature sensor to an internal component of the air data probe for determining temperature.

14. The method of claim 10 , further including additively manufacturing a sensor layer of the temperature sensor onto the first dielectric layer.

15. The method of claim 14 , further including depositing a dielectric layer of the temperature sensor onto the sensor layer of the temperature sensor.

16. The method of claim 15 , wherein the dielectric layer of the temperature sensor is made of xylene resin, alumina, PEKK, or aluminum nitride.

17. The method of claim 14 , wherein the sensor layer of the temperature sensor is made of one or more materials selected from the group consisting of: silver, copper, PTC, ruthenium, silver-palladium, platinum, and tungsten.

18. The method of claim 1 , wherein a portion of the heater includes restrictive heater paths that are electrically in parallel for redundancy.

19. The method of claim 1 , wherein the heater has varied Watt density.

20. The method of claim 1 , wherein the heater has a varied cross-sectional area.

Assignees

• Rosemount Aerospace Inc

Inventors

• Wigen Scott
• Seidel Greg Allen
• Ranjan Ram
• Golly Timothy Thomas
• Schmidt Wayde R
• Dardona Sameh
• Culp Slade R

Classifications

• B64D15/12 Primary

  by electric heating (heating arrangements specially adapted for transparent or reflecting areas H05B3/84) · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B64D43/02

  for indicating aircraft speed or stalling conditions · CPC title

• G01P5/16

  using Pitot tubes {, e.g. Machmeter} · CPC title

• H05B3/40

  Heating elements having the shape of rods or tubes (H05B3/62, H05B3/68, H05B3/78 take precedence) · CPC title