An anti-icing five-hole probe

A five-hole probe and probe technology, which is applied in the testing of machines/structural components, instruments, measuring devices, etc., can solve the problem of five-hole probe freezing and other problems, and achieve accuracy, remarkable effect, and simple structure Effect

Active Publication Date: 2019-10-25
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main technical problem to be solved by the present invention is to provide an anti-icing five-hole probe, which can solve the problem of five-hole probe freezing when conducting icing experiments

Method used

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  • An anti-icing five-hole probe
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  • An anti-icing five-hole probe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 and figure 2 As shown, a kind of anti-icing five-hole probe is introduced in the present embodiment, and it comprises probe head (1), probe rod (2), pressure induction tube (3); Described probe rod (2) is Hollow sleeve rod, the end of the probe rod (2) is provided with a probe head (1), the probe head (1) is welded to the probe rod (2), and the probe head seals the hollow part of the probe rod The hollow part of the probe rod is provided with five pressure-introduction tubes (3), each of which extends parallel to the axis of the probe rod (2), and the ends of each pressure-induction tube (3) are Insert into the probe head (1) to measure the flow field where the probe head is located. In this embodiment, five pressure-introducing tubes (3) are brazed together and fitted into the probe rod (2). In this embodiment, the pressure induction tube (3) is wrapped with a layer of electrothermal film (4) to heat the five-hole probe and increase the temperature...

Embodiment 2

[0033] Such as image 3 and Figure 4 As shown, a kind of anti-icing five-hole probe is introduced in the present embodiment, and it comprises probe head (1), probe rod (2), pressure induction tube (3); Described probe rod (2) is Hollow sleeve rod, the end of probe rod (2) is provided with probe head (1), and described probe head (1) is welded with probe rod (2), and probe head (1) connects probe rod (2) The hollow part is blocked; the hollow part of the probe rod (2) is provided with five pressure introduction tubes (3), and each pressure introduction tube (3) extends in a direction parallel to the axis of the probe rod (2), And the end of each pressure introduction tube (3) is inserted into the probe head, so as to detect the detection flow field where the probe head (1) is located. In this embodiment, five pressure-introducing tubes (3) are brazed together and fitted into the probe rod (2). In this embodiment, four electric heating rods (5) are evenly distributed around ...

Embodiment 3

[0044] This embodiment is based on any one of the above-mentioned embodiments one and two, and also has the following technical features: the tail of the heating film (4) or the heating rod (5) is wired to pass through the probe rod (2), and the terminal that passes through The part is provided with a plug (8) connected to the power supply.

[0045] Through the above settings, the heating film (4) or heating rod (5) of the five-hole probe is connected to the external power supply through the wiring provided with the plug (8), so as to realize the heating of the heating film (4) or the heating rod. (5) The purpose of providing heating power supply.

[0046] In this embodiment, in order to improve the accuracy of the heating control of the five-hole probe, a temperature control device (6), Transformer (7); the temperature control device (6) controls the transformer (7) to adjust the input voltage of the heating film (4) or heating rod (5), and then make the heating film (4) or ...

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Abstract

The invention provides an anti-icing five-hole probe. The anti-icing five-hole probe includes a probe head (1), a probe rod (2) and impulse tubes (3), wherein the probe head (1) is welded with the probe rod (2); the five impulse tubes (3) are welded together, and sleeve the probe rod (2); the outside of the impulse tubes (3) are coated with one layer of electrothermal film (4) or four electrical bars (5) are uniformly distributed around the impulse tubes (3) so as to improve the temperature of the probe to prevent icing; and by setting the electrothermal film (4) or the electrical bars (5) in the five-hole probe, the anti-icing five-hole probe can effectively and timely heat the impulse tubes (3) in the five-hole probe, can achieve the aim of performing accurate control of the temperature of the five-hole probe in real time, and can effectively prevent the five-hole probe from icing in the ice wind tunnel experiment test without influencing the tested flow field so as to guarantee accuracy of the tested data.

Description

technical field [0001] The invention relates to the technical field of anti-icing for engine testing, in particular to an anti-icing five-hole probe. Data Accuracy. Background technique [0002] When the aircraft is flying in icy weather conditions, the supercooled water droplets will hit the windward side of the aircraft and cause icing. The icing of the engine inlet and the cold air inlet will lead to insufficient bleed air. If the ice layer falls off, it will be damaged. Components inside the air intake that adversely affect the performance of the aircraft. Ice wind tunnel test is the most basic means to carry out research on icing and anti-icing methods of aircraft and components. The five-hole probe, which is often used to measure three-dimensional flow fields, is very likely to freeze when performing icing experiments. Once the five-hole needle freezes, it will change the geometry of the probe, resulting in the failure of the calibration characteristics of the probe...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01M9/06
CPCG01M9/06
Inventor马宏伟李鑫
OwnerBEIHANG UNIV