Time-dependent pressure and directional sensing probe

Patent metadata

Field	Value
Publication number	US-10656171-B1
Application number	US-201816209335-A
Country	US
Kind code	B1
Filing date	Dec 4, 2018
Priority date	Mar 8, 2018
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

An air speed probe with a cylindrical probe body having a length, and a frusto-conical tip at an end of the cylindrical probe body. A center bore with a first diameter and first depth is formed in a center of the tip and coaxially disposed along a portion of the length of the cylindrical probe body. Radial bores with second diameters and second depths are formed in a sidewall of the tip, where the first diameter is wider than the second diameter, and the first depth is shallower than the second depth.

First claim

What is claimed is:

1. An air speed probe, comprising:
a cylindrical probe body having a length,
a frusto-conical tip at an end of the cylindrical probe body,
a center bore having a first diameter and first depth formed in a center of the tip and coaxially disposed along a portion of the length of the cylindrical probe body, and
radial bores having second diameters and second depths formed in a sidewall of the tip,
where the first diameter is wider than the second diameter, and the first depth is shallower than the second depth.

2. The probe of claim 1 , further comprising a time-variant pressure sensor disposed at a bottom of the center bore.

3. The probe of claim 1 , further comprising steady-state pressure sensors disposed at a bottom of each of the radial bores.

4. The probe of claim 1 , wherein four radial bores are formed in the probe.

5. The probe of claim 1 , wherein an angle of the sidewall of the tip is between about 25 degrees and about 60 degrees.

6. The probe of claim 1 , wherein the probe is formed of metal.

7. The probe of claim 1 , wherein a ratio of the first diameter to the second diameter is about 3:1.

8. The probe of claim 1 , wherein the radial bores are disposed axially parallel along the length of the cylindrical probe body.

9. An air speed probe, comprising:
a cylindrical probe body having a length,
a frusto-conical tip at an end of the cylindrical probe body,
a center bore formed in a center of the tip,
a time-variant pressure sensor disposed within the center bore,
radial bores formed in a sidewall of the tip, and
a steady-state pressure sensor connected to each of the radial bores.

10. The probe of claim 9 , wherein the center bore has a first diameter and first depth, and the radial bores have second diameters and second depths, where the first diameter is wider than the second diameter, and the first depth is shallower than the second depth.

11. The probe of claim 10 , wherein a ratio of the first diameter to the second diameter is about 3:1.

12. The probe of claim 9 , wherein four radial bores are formed in the probe.

13. The probe of claim 9 , wherein an angle of the sidewall of the tip is between about 25 degrees and about 60 degrees.

14. The probe of claim 9 , wherein the probe is formed of metal.

15. The probe of claim 9 , wherein the radial bores are disposed axially parallel along the length of the cylindrical probe body.

16. An air speed probe, comprising:
a cylindrical probe body having a length,
a frusto-conical tip at an end of the cylindrical probe body,
a center bore having a first diameter and first depth formed in a center of the tip and coaxially disposed along a portion of the length of the cylindrical probe body, and
radial bores having second diameters and second depths formed in a sidewall of the tip,
where a ratio of the first diameter to the second diameter is about 3:1.

17. The probe of claim 16 , further comprising a time-variant pressure sensor disposed at a bottom of the center bore.

18. The probe of claim 16 , further comprising steady-state pressure sensors disposed at a bottom of each of the radial bores.

19. The probe of claim 16 , wherein an angle of the sidewall of the tip is between about 25 degrees and about 60 degrees.

20. The probe of claim 16 , wherein the first depth is shallower than the second depth.

Assignees

• Us Gov Air Force

Inventors

• Pleiman Brock J
• Scribben Angela R
• Semmelmayer Frank C
• King Kevin L

Classifications

• G01P13/025

  indicating air data, i.e. flight variables of an aircraft, e.g. angle of attack, side slip, shear, yaw · CPC title

• G01P5/16 Primary

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

• G01F1/34

  by measuring pressure or differential pressure · CPC title

• G01F1/206

  Measuring pressure, force or momentum of a fluid flow which is forced to change its direction · CPC title