Systems and methods for icing resistant total air temperature probes with air jets

Patent metadata

Field	Value
Publication number	US-10337931-B2
Application number	US-201715399611-A
Country	US
Kind code	B2
Filing date	Jan 5, 2017
Priority date	Jan 5, 2017
Publication date	Jul 2, 2019
Grant date	Jul 2, 2019

Abstract

Systems and methods for icing resistant total air temperature probes with air jets are presented. In one embodiment, a probe comprises: a base having a forced air input port; and a body having leading and trailing edges extending from the base, the body comprising: a first interior airflow passage; a temperature sensor positioned within the first airflow passage; a notched intake port at a distal end of the body including an open channel extending into an intake aperture, and a cutaway region defining a recessed second face inset from the first face and exposes the open channel. The intake aperture opens into the first interior airflow passage, the notched intake port comprising air jet ports at a tip of the notched intake port; and a heated airflow passage through the body and isolated from the first interior airflow passage, coupling the forced air input port to the air jet ports.

First claim

What is claimed is:

1. A total air temperature data probe, the probe comprising:
a probe base having a forced air input port; and
a probe body having a leading edge and a trailing edge and extending from the probe base along a first axis, the probe body comprising:
a first interior airflow passage comprising a first annulus aligned with the first axis;
a temperature sensor positioned within the first interior airflow passage and aligned with the first axis;
a notched intake port positioned at a distal end of the probe body, the notched intake port including an open channel extending inward from a first face of the distal end into an intake aperture of the probe body, and a cutaway region that defines a recessed second face inset from the first face and exposes the open channel at least partially from the leading edge, wherein the intake aperture opens into the first interior airflow passage, the notched intake port comprising one or more air jet ports at a tip of the notched intake port; and
a heated airflow passage through the probe body, the heated airflow passage isolated from the first interior airflow passage and coupling the forced air input port to the one or more air jet ports.

2. The probe of claim 1 , wherein a path of the heated airflow passage directs pressurized air from the forced air input port towards the leading edge of the probe body and then to the notched intake port, around a circumference of the intake aperture and towards the trailing edge of the body probe, and then out through the one or more air jet ports at the tip of the notched intake port.

3. The probe of claim 1 , the probe body further comprising:
a tubular heat shield defining an exterior wall of at least part of the first interior airflow passage, wherein the temperature sensor is positioned within the tubular heat shield.

4. The probe of claim 3 , the probe body further comprising:
a second interior airflow passage comprising a second annulus aligned with the first axis; and
wherein the second annulus is defined by a space between the tubular heat shield and an interior wall of the probe body and the tubular heat shield separates the first annulus from the second annulus.

5. The probe of claim 4 , wherein the intake aperture opens to both the first annulus and the second annulus.

6. The probe of claim 4 , wherein the first interior airflow passage and the second interior air-flow passage are concentric tubular airflow passages.

7. The probe of claim 1 , the probe further comprising:
at least one heating element positioned within the probe and configured to heat air flowing through the heated airflow passage.

8. The probe of claim 1 , wherein the notched intake port further comprises a slot inset from the recessed second face that traverses across at least a portion of the intake aperture perpendicularly to the open channel.

9. The probe of claim 1 , wherein at least a first air jet port of the one or more air jet ports includes a cutaway region that connects the first air jet port with the open channel of the notched intake port.

10. The probe of claim 1 , further comprising a plurality of exhaust ports positioned along a side of the probe body, wherein the first internal airflow passage and the second internal airflow passage are coupled to the plurality of exhaust ports.

11. The probe of claim 1 , wherein the open channel runs parallel to the axis of the probe body.

Assignees

• Honeywell Int Inc

Inventors

• Anderson Morris G
• Price Zachary
• Hollingshead Doug

Classifications

• G01K2013/024

  Physics · mapped topic

• G01K13/028 Primary

  for use in total air temperature [TAT] probes · CPC title

• G01K13/02 Primary

  for measuring temperature of moving fluids or granular materials capable of flow · CPC title

• G01K1/00

  Details of thermometers not specially adapted for particular types of thermometer (circuits for reducing thermal inertia G01K7/42) · CPC title

• G01K13/024

  of moving gases · CPC title