Method and device for leak check of air data system

Patent metadata

Field	Value
Publication number	US-10876858-B2
Application number	US-201816009765-A
Country	US
Kind code	B2
Filing date	Jun 15, 2018
Priority date	Jun 15, 2018
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

A device for use in a leak check test of an air data system includes a device body, an opening extending into the device body with the opening being configured to allow a probe to be at least partially inserted into the opening, and walls surrounding the opening with the walls being situated to seal a port in the probe such that air is prevented from flowing into or out of the port while the probe is inserted into the opening. A method of performing a leak check test includes covering the port with the device to seal the port, heating air within a gas path in the air data system, measuring the change in pressure of the air resulting from an increase in temperature of the air, and determining whether the air data system is sealed depending on the change in pressure of the air.

First claim

The invention claimed is:

1. A device for use in a leak check test of an air data system, the device comprising:
a body;
an opening extending into the body, the opening being configured to allow a probe to be at least partially inserted into the opening; and
walls surrounding the opening, the walls being situated to seal a port in the probe such that air is prevented from flowing into or out of the port while the probe is inserted into the opening.

2. The device of claim 1 , further comprising:
a proximity sensor configured to instruct the air data system to begin the leak check test when the probe is inserted into the opening.

3. The device of claim 2 , wherein the proximity sensor is a tag capable of wireless communication that is configured to instruct a controller of the air data system to begin the leak check test.

4. The device of claim 1 , wherein the walls are constructed from a heat resistant material.

5. The device of claim 1 , wherein the walls are configured to seal more than one port in the probe.

6. The device of claim 1 , wherein the body is cylindrical and the opening is cylindrical to accommodate the probe.

7. A system comprising:
an air data system comprising:
a gas path;
a probe having ports and a heater, the ports forming an entrance to the gas path and configured to allow air to enter the gas path; and
a transducer having sensors situated along the gas path; and

a device configured to cover at least a portion of the probe during a leak check test of the air data system, the device comprising:
a device body; and
an opening extending into the device body with the opening being situated to seal the ports in the probe so that air is prevented from flowing into or out of the ports when the probe is inserted into the opening.

8. The system of claim 7 , wherein the transducer is configured to determine whether the air data system is absent of leaks depending on a change in pressure of the air within the gas path resulting from a change in temperature of the air.

9. The system of claim 7 , wherein the device further comprises:
a proximity sensor configured to inform the transducer that the device is sealing the ports of the probe.

10. The system of claim 9 , wherein the proximity sensor of the device is a radio frequency identification tag.

11. The system of claim 7 , wherein the air data system is on an aircraft with the probe being exposed to the environment and the transducer being within a fuselage of the aircraft.

12. The system of claim 7 , wherein the device further comprises:
walls surrounding the opening that are configured to seal each port individually.

13. The system of claim 12 , wherein the walls are constructed from a heat resistant material.

14. The system of claim 7 , further comprising:
a controller configured to instruct the air data system to begin the leak check test and configured to determine if the air data system is absent of leaks.

15. A method of performing a leak check test of an air data system, the method comprising:
covering a port on a probe of the air data system with a device configured to seal the port to prevent air from entering or exiting the port;
heating air within a gas path in the air data system;
measuring a change in pressure of the air resulting from an increase in temperature of the air within the gas path; and
determining whether the air data system is sealed depending on the change in pressure of the air.

16. The method of claim 15 , further comprising:
after covering the port on the probe with the device, instructing a heater to heat the air within the gas path with the instruction being performed by a proximity sensor that is part of the device.

17. The method of claim 15 , wherein the step of measuring the change in pressure of the air within the gas path is repeated multiple times by at least one sensor within the air data system.

18. The method of claim 15 , further comprising:
removing the device from the probe after the air data system is determined to be sealed or unsealed.

19. The method of claim 15 , further comprising:
measuring the change in pressure of the air within multiple gas paths in the air data system resulting from the increase in temperature of the air within each of the gas paths; and
determining whether each of the multiple gas paths is sealed depending on the change in pressure of the air.

Assignees

• Rosemount Aerospace Inc

Inventors

• Naslund Brian Brent
• Langemo Benjamin John
• Anderson Matthew Paul
• Sherman Andrew

Classifications

• G01M3/26

  by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors · CPC title

• B64F5/60

  Testing or inspecting aircraft components or systems · CPC title

• G01P21/025

  for measuring speed of fluids; for measuring speed of bodies relative to fluids (for measuring volume flow G01F25/10) · CPC title

• G01C25/00 Primary

  Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass (testing, calibrating or compensating compasses G01C17/38) · CPC title

• G01C23/00

  Combined instruments indicating more than one navigational value, e.g. for aircraft; Combined measuring devices for measuring two or more variables of movement, e.g. distance, speed or acceleration · CPC title