Probe tip for air data probe

• US 10,605,637 B2
• Filed: 12/29/2017
• Issued: 03/31/2020
• Est. Priority Date: 01/08/2016
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Gordon, Grant A., Wong, Yates
• Primary Examiner(s): Stoner, Kiley S
• Application Number:
  US15/858,633
• Publication Number:
  US 20180143049A1
• Time in Patent Office: 823 Days
• Field of Search: 228175-176, 228245-246
• CPC Class Codes: B23K 1/0008 specially adapted for particular articles or work
• CPC Class Codes: G01F 1/46 Pitot tubes
• CPC Class Codes: G01F 15/10 Preventing damage by freezing or excess pressure or insufficient pressure
• CPC Class Codes: G01P 5/165 Arrangements or constructions of Pitot tubes

Abstract

A probe assembly includes a heat source; and a probe tip configured to enhance conduction of heat provided by the heat source into a front end tip of the probe. The probe tip includes: a first region having high thermal conductivity in at least a z-direction, wherein the z-direction is parallel to an axis along which the probe tip is extended; and at least one additional region having thermal characteristics different from the first region.

Claims

1. A method of fabricating a probe tip for a probe, the method comprising:

providing a first region configured to have a higher thermal conductivity in a z-direction than thermal conductivity in other directions, wherein the z-direction is parallel to an axis along which the probe tip is extended to enhance heat toward a front end of the probe tip;

providing a second region configured to function as a thermal reservoir with uniform thermal conductivity;

providing a third region configured to function as an insulator; and

wherein the probe tip is configured to enhance conduction of heat provided by a heat source into a front end tip of the probe via the first region, the second region, and the third region.

2. The method of claim 1, further comprising:

providing a fourth region configured to function as an insulator having thermal conductivity in the z-direction and approximately no conductivity in other directions, wherein the thermal conductivity of the fourth region in the z-direction is less than the thermal conductivity of the second region.

3. The method of claim 1, further comprising brazing a tip of the heat source in a pocket of the probe tip to attach the probe tip to the probe.

4. The method of claim 1, wherein the probe tip includes a single conductive material having uniform thermal characteristics, the method further comprising providing voids in the single conductive material to direct the heat provided by the heat source in a desired direction.

5. The method of claim 1, further comprising layering a collection of connected and nested tubes along an axis in the z-direction such that the heat is directed in the z-direction, wherein the tubes are composed of a material having uniform thermal conductivity in all directions.

6. The method of claim 1, wherein providing at least one of the first region and the at least one additional region further comprises fabricating at least one of the at least one region and the at least one additional region using a process of additive manufacturing.

7. The method of claim 6, wherein using a process of additive manufacturing further comprises utilizing direct metal laser sintering.

8. The method of claim 6, wherein using a process of additive manufacturing further comprises utilizing electron beam melting.

9. The method of claim 1, wherein the second region is configured to function as the thermal reservoir with uniform thermal conductivity in all directions.

10. The method of claim 9, wherein the third region is configured to function as the insulator in all directions.

11. The method of claim 10, further comprising:

providing a fourth region configured to function as an insulator having thermal conductivity in the z-direction and approximately no conductivity in other directions, wherein the thermal conductivity of the fourth region in the z-direction is less than the thermal conductivity of the second region.

12. The method of claim 1, wherein the third region is configured to function as the insulator in all directions.