Powerless environmental data recorder

Patent metadata

Field	Value
Publication number	US-10241126-B2
Application number	US-201715469033-A
Country	US
Kind code	B2
Filing date	Mar 24, 2017
Priority date	Mar 24, 2017
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

An environmental data recorder includes an enclosure, a first acceleration recorder array positioned on a first inner surface of the enclosure corresponding to an x-z plane defined by an x-axis and a z-axis, a second acceleration recorder array positioned on a second inner surface of the enclosure corresponding to an x-y plane defined by the x-axis and a y-axis, and a third acceleration recorder array positioned on a third inner surface of the enclosure corresponding to a y-z plane defined by the y-axis and the z-axis. The x-axis, the y-axis, and the z-axis are orthogonal axes. The first, second, and third acceleration recorder arrays each include a plurality of beams cantilevered at first ends from a base attached to an inner surface of the enclosure and a plurality of known masses associated with the beams. The beams are configured to deform or break when exposed to different g loads.

First claim

The invention claimed is:

1. An environmental data recorder comprising:
an enclosure; and
a first acceleration recorder array positioned on a first inner surface of the enclosure corresponding to an x-z plane defined by an x-axis and a z-axis, the first acceleration recorder array including:
a plurality of first beams cantilevered at first ends from a base attached to the first inner surface of the enclosure; and
a plurality of known first masses associated with the first beams;
wherein the first beams are configured to deform or break when exposed to different g loads;

a second acceleration recorder array positioned on a second inner surface of the enclosure corresponding to an x-y plane defined by the x-axis and a y-axis, the second acceleration recorder array including:
a plurality of second beams cantilevered at first ends from a base attached to the second inner surface of the enclosure; and
a plurality of known second masses associated with the second beams;
wherein the second beams are configured to deform or break when exposed to different g loads; and

a third acceleration recorder array positioned on a third inner surface of the enclosure corresponding to a y-z plane defined by the y-axis and the z-axis, the third acceleration recorder array including:
a plurality of third beams cantilevered at first ends from a base attached to the third inner surface of the enclosure; and
a plurality of known third masses associated with the third beams;
wherein the third beams are configured to deform or break when exposed to different g loads;

wherein the x-axis, the y-axis, and the z-axis are orthogonal axes, and the environmental data recorder is of a single-piece construction.

2. The environmental data recorder of claim 1 and further comprising a temperature detector attached to a surface of the enclosure.

3. The environmental data recorder of claim 1 , wherein the plurality of first beams of the first acceleration recorder array extend in a direction of the y-axis, the plurality of second beams of the second acceleration recorder array extend in a direction of the z-axis, and the plurality of third beams of the third acceleration recorder array extend in a direction of the x-axis.

4. The environmental data recorder of claim 1 , wherein each beam includes a portion having a reduced cross-sectional area near the first end.

5. The environmental data recorder of claim 4 , wherein the beams are configured to break at the portions having reduced cross-sectional areas when exposed to different g loads.

6. The environmental data recorder of claim 1 , wherein the masses are spheres.

7. The environmental data recorder of claim 1 , wherein the environmental data recorder is made of a single material.

8. The environmental data recorder of claim 1 , wherein the environmental data recorder is made using additive manufacturing.

9. The environmental data recorder of claim 1 , wherein the environmental data recorder is made of metal.

10. The environmental data recorder of claim 1 , wherein the beams are arranged in a series on the base.

11. The environmental data recorder of claim 1 , wherein the enclosure further comprises a base, a top, and sides.

12. The environmental data recorder of claim 1 , wherein the enclosure is a box.

13. The environmental data recorder of claim 1 , wherein the beams vary in length in order to break at designated g loads.

14. The environmental data recorder of claim 1 , wherein the masses associated with the beams vary in order to break the beams at designated g loads.

15. The environmental data recorder of claim 1 , wherein the acceleration recorder arrays are of single-piece construction.

16. A method of determining a field environment of a component comprising:
examining an environmental data recorder that was on a component exposed to a field environment, the environmental data recorder including:
an enclosure;
a first acceleration recorder array positioned on a first inner surface of the enclosure corresponding to an x-z plane defined by an x-axis and a z-axis, the first acceleration recorder array including:
a plurality of first beams cantilevered at first ends from a base attached to the first inner surface of the enclosure; and
a plurality of known first masses associated with the first beams;
wherein the first beams are configured to deform or break when exposed to different g loads;

a second acceleration recorder array positioned on a second inner surface of the enclosure corresponding to an x-y plane defined by the x-axis and a y-axis, the second acceleration recorder array including:
a plurality of second beams cantilevered at first ends from a base attached to the second inner surface of the enclosure; and
a plurality of known second masses associated with the second beams;
wherein the second beams are configured to deform or break when exposed to different g loads; and

a third acceleration recorder array positioned on a third inner surface of the enclosure corresponding to a y-z plane defined by the y-axis and the z-axis, the third acceleration recorder array including:
a plurality of third beams cantilevered at first ends from a base attached to the third inner surface of the enclosure; and
a plurality of known third masses associated with the third beams;
wherein the third beams are configured to deform or break when exposed to different g loads;
wherein the x-axis, the y-axis, and the z-axis are orthogonal axes, and the environmental data recorder is of a single-piece construction; and

determining a maximum g load range the component was exposed to in the field environment based on the deformed or broken beams.

17. The method of claim 16 , and further comprising examining a temperature detector attached to a surface of the enclosure to determine the maximum temperature the component was exposed to in the field.

18. The method of claim 16 , wherein the plurality of first beams of the first acceleration recorder array extend in a direction of the y-axis, the plurality of second beams of the second acceleration recorder array extend in a direction of the z-axis, and the plurality of third beams of the third acceleration recorder array extend in a direction of the x-axis.

19. The method of claim 18 , and further comprising determining a maximum g load range the component was exposed to in the field environment in the x-axis, the y-axis, and the z-axis based on the deformed or broken beams from the first acceleration recorder array, the second acceleration recorder array, and the third acceleration recorder array.

20. An environmental data recorder comprising:
an enclosure; and
a first acceleration recorder array positioned on a first inner surface of the enclosure corresponding to an x-z plane defined by an x-axis and a z-axis, the first acceleration recorder array including:
a plurality of first beams cantilevered at first ends from a base attached to the first inner surface of the enclosure; and
a plurality of known first masses associated with the first beams;
wherein the first beams are configured to deform or break when exposed to different g loads;

a second acceleration recorder array positioned on a second inner surface of the enclosure corresponding to an x-y plane defined by the x-axis and a y-axis, the second acceleration recorder array including:
a plurality of second beams cantilevered at first ends from a base attached to the second inner surface of the enclosure; and
a plurality of known second masses associated with the sec

Assignees

• Hamilton Sundstrand Corp

Inventors

• Ernst Jeffrey

Classifications

• G01V7/00

  Measuring gravitational fields or waves; Gravimetric prospecting or detecting · CPC title

• G01P21/00 Primary

  Testing or calibrating of apparatus or devices covered by the preceding groups · CPC title

• G01P15/18

  in two or more dimensions · CPC title

• G01P15/06

  using members subjected to a permanent deformation · CPC title

• G01P15/036

  for indicating predetermined acceleration values · CPC title