CN113267313B - Pressure measuring rake and stabilizing method thereof - Google Patents
Pressure measuring rake and stabilizing method thereof Download PDFInfo
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- CN113267313B CN113267313B CN202110811806.9A CN202110811806A CN113267313B CN 113267313 B CN113267313 B CN 113267313B CN 202110811806 A CN202110811806 A CN 202110811806A CN 113267313 B CN113267313 B CN 113267313B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
- G01M9/062—Wind tunnel balances; Holding devices combined with measuring arrangements
Abstract
The invention discloses a pressure measuring rake and a stabilizing method thereof, which are used for solving the problem of test precision reduction caused by the swinging of a total pressure pipe and a static pressure pipe of the pressure measuring rake in the wind tunnel test process. The pressure measuring rake comprises a rake body and at least two groups of measuring assemblies, wherein the measuring assemblies are arranged on the rake body; the measuring assembly comprises at least two total pressure pipes, a static pressure pipe, a first pressure stabilizing device and a second pressure stabilizing device; a first side connecting pipe of the first voltage stabilizer is sleeved on the total pressure pipe, and the first voltage stabilizer can keep relative rest with the total pressure pipe; the second side connecting pipe is sleeved on the total pressure pipe, the second pressure stabilizing device can keep relative static with the total pressure pipe, the third side connecting pipe is sleeved on the static pressure pipe, and the second pressure stabilizing device can keep relative static with the static pressure pipe. By adopting the invention, the repeatability of tests of different train numbers in the same state is well matched, and the accuracy of the calculated output Ma number and the inner flow resistance coefficient is obviously improved.
Description
Technical Field
The application relates to the field of wind tunnel tests, in particular to a pressure measuring rake and a stabilizing method thereof.
Background
The purpose of the ventilation model test is to obtain full-mode aerodynamic data simulating the inlet flow regime, or to obtain intake air effect corrections. The ventilation model can better simulate the flow state at the inlet, but the ventilation model test needs to measure the parameters of the airflow at the outlet and deduct the internal resistance, thereby increasing the complexity of the test and the links generating errors.
In a high-speed wind tunnel, a tail strut support mode is usually adopted in a ventilation model force measurement test; in order to determine the internal flow resistance coefficient of the aeration model and to subtract it from the balance resistance measurement, the total, static pressure of the aeration model outlet air flow must be measured. The total and static pressures of the air flow at the outlet of the ventilation model are generally measured by using a total and static pressure exhaust pipe. In theory, the measurement cross section should be at the outlet cross section, but in order to avoid damaging the total pressure exhaust pipe when the model shakes in the test, the measurement cross section can also be at the position 0.5 mm-1.0 mm behind the outlet cross section (the outlet cross section refers to the outlet cross section of the channel in the ventilation model, and is outside the total pressure exhaust pipe). The total pressure pipe mouth should be located this cross-section, and the static pressure hole on the static pressure pipe should be slightly forward (total pressure calandria is the crew cut, can produce the shock wave of taking off the body at the front edge, and in order to avoid taking off the influence of shock wave to static pressure measurement, the static pressure hole of static pressure calandria should be more forward than total pressure calandria front edge position) to avoid the influence of the shock wave that the total pressure pipe head produced when the export air current is supersonic speed. Due to the influence of the boundary layer of the inner wall of the ventilation model of the wind tunnel test, the total pressure distribution of the cross section of the outlet is uneven, more total pressure pipes are required to be arranged, and the total pressure pipes can be distributed according to the equal area. The total pressure pipe and the static pressure pipe can be made of stainless steel pipes with the outer diameter of 1.2mm and the inner diameter of 0.8 mm. The total pressure nozzle plane should be perpendicular to the tube axis. The front end of the static pressure pipe is made into a 10-degree cone, and static pressure holes with the diameter of 0.3 mm-0.4 mm are formed in the upper and lower parts of the position 10 times the pipe diameter behind the shoulder (the static pressure pipe is a pressure measuring pipe with a tip in the figure 5, the tip aims at airflow modification, and holes are usually formed in the upper and lower parts of the position 10 times the pipe diameter behind the shoulder of the equal straight section behind the tip and used for measuring a static pressure value).
At present, a commonly used pressure measuring rake consists of a rake body, a total pressure pipe and a static pressure pipe. Wherein, the harrow body consists of two halves which are connected and fixed on the supporting rod by screws.
In the pressure measuring rake, two half rake bodies are fixed on a supporting rod through screw connection, and a total pressure pipe and a static pressure pipe at the front end of the rake body are similar to cantilever beam structures. The inventor's earlier experimental study shows that total pressure pipe, static pressure pipe cantilever length have great influence on the internal resistance of measurement, flow coefficient, and total pressure pipe, static pressure pipe length 100mm above can reduce this part influence. The front ends of the total pressure pipe and the static pressure pipe are positioned on the section of an outlet of the model, and the large dynamic pressure of the airflow can cause the total pressure pipe and the static pressure pipe to shake greatly under the condition that the section of the outlet is supersonic speed, so that the difference of the total pressure and the static pressure values measured by different train numbers in the same state is large, and the precision of test data is seriously influenced.
To this end, a new method and/or apparatus is urgently needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a pressure measuring rake and a stabilizing method thereof, and aims to solve the problem of test precision reduction caused by the swinging of a total pressure pipe and a static pressure pipe of the pressure measuring rake in the wind tunnel test process.
In order to achieve the purpose, the following technical scheme is adopted in the application:
the pressure measuring rake comprises a rake body and at least two groups of measuring assemblies, wherein the measuring assemblies are arranged on the rake body;
the measuring assembly comprises at least two total pressure pipes, a static pressure pipe, a first pressure stabilizing device and a second pressure stabilizing device;
the first pressure stabilizing device comprises a first middle connecting section and a first side connecting pipe matched with the total pressure pipe, the first middle connecting section comprises a first middle part and first flow guide parts, and the first flow guide parts are a first group and two first groups; the first flow guide parts are symmetrically arranged on two sides of the first middle part along the axial direction of the total pressure pipe;
the first side connecting pipes are tubular, the axial direction of the first side connecting pipes is parallel to the axial direction of the total pressure pipe, the first side connecting pipes are in a second group, the number of the second group is at least two, and the first side connecting pipes are respectively arranged at two ends of the first middle connecting section;
a first side connecting pipe of the first voltage stabilizer is sleeved on the total pressure pipe, and the first voltage stabilizer can keep relative rest with the total pressure pipe;
the second pressure stabilizing device comprises a second middle connecting section, a second side connecting pipe matched with the total pressure pipe and a third side connecting pipe matched with the static pressure pipe, the second middle connecting section comprises a second middle part and second flow guide parts, the second flow guide parts are of a third group, and the third group is two; the second flow guide parts are symmetrically arranged on two sides of the second middle part along the axial direction of the total pressure pipe;
the second side connecting pipe and the third side connecting pipe are respectively tubular, the axial direction of the second side connecting pipe, the axial direction of the third side connecting pipe and the axial direction of the static pressure pipe are mutually parallel, and the second side connecting pipe and the third side connecting pipe are respectively arranged at two ends of the second middle connecting section;
the second side connecting pipe is sleeved on the total pressure pipe, the second pressure stabilizing device can keep relative static with the total pressure pipe, the third side connecting pipe is sleeved on the static pressure pipe, and the second pressure stabilizing device can keep relative static with the static pressure pipe.
The inner diameter of the first side connecting pipe is the same as the outer diameter of the total pressure pipe.
The inner diameter of the second side edge connecting pipe is the same as the outer diameter of the total pressure pipe, and the inner diameter of the third side edge connecting pipe is the same as the outer diameter of the static pressure pipe.
The first flow guide part is wedge-shaped.
The second diversion part is wedge-shaped.
Along the axial direction of total pressure pipe, first intermediate junction section, second intermediate junction section are thick in the middle of the thick state of both sides thinness respectively.
The first flow guide part and the second flow guide part are respectively triangular along the section perpendicular to the plane of the first middle connecting section and the section perpendicular to the plane of the second middle connecting section.
And the lengths of the first middle part, the first flow guide part, the second middle part and the second flow guide part are respectively less than or equal to 5mm along the axial direction of the total pressure pipe.
The pressure stabilizing device comprises a first pressure stabilizing device and a second pressure stabilizing device, and is characterized by further comprising bonding pieces, wherein the bonding pieces are used for fixedly connecting the first pressure stabilizing device with the total pressure pipe, the second pressure stabilizing device with the total pressure pipe and the second pressure stabilizing device with the static pressure pipe respectively.
The bonding piece is formed by solidifying glue.
The bonding piece is respectively arranged on the upwind side of the first pressure stabilizing device and the second pressure stabilizing device.
The stabilizing method of the pressure measuring rake comprises the following steps:
a. preliminary installation
Respectively connecting the static pressure pipe and the total pressure pipe with the rake body to finish the initial installation of the pressure measuring rake;
b. total pressure pipe stability
In one measuring assembly, first side connecting pipes at two ends of a first pressure stabilizing device are respectively sleeved on total pressure pipes;
c. static pressure tube stabilization
In one measuring assembly, a second side edge connecting pipe on a second pressure stabilizer is sleeved on a total pressure pipe, a third side edge connecting pipe on the second pressure stabilizer is sleeved on a static pressure pipe, and the total pressure pipe and the static pressure pipe are connected into a whole through a first pressure stabilizer and a second pressure stabilizer;
d. and (c) repeating the steps b and c to finish the installation of the total pressure pipe and the static pressure pipe in all the measuring assemblies.
Also comprises the following steps:
e. and d, after the step d is finished, carrying out an ultrasonic wind tunnel test, and measuring total pressure and static pressure values.
In the step b, the first pressure stabilizing device is fixedly connected with the total pressure pipe through a bonding piece;
and c, respectively and fixedly connecting the static pressure pipe with the second pressure stabilizing device and the total pressure pipe by using bonding pieces.
In the step b, the bonding piece is arranged on the upwind side of the first pressure stabilizing device;
in the step c, the bonding piece is arranged on the upwind side of the second pressure stabilizing device.
In order to solve the problems, the application provides a pressure measuring rake and a stabilizing method thereof, relates to a method for stabilizing a total pressure pipe and a static pressure pipe, and is used for solving the problem that the accuracy of test data is reduced due to the swing of the pressure measuring rake in the wind tunnel test process.
Compared with the existing pressure measuring rake, the pressure measuring rake and the stabilization method of the total pressure pipe and the static pressure pipe effectively reduce the phenomenon that the total pressure and the static pressure pipe randomly swing caused by large dynamic pressure corresponding to the supersonic velocity of the cross section of the outlet, and solve the problem that the pressure measuring rake shakes in the wind tunnel test process.
The pressure measuring rake and the pressure measuring rake stabilizing method provided by the invention have been verified by tests of a 2 m-order model and a 1 m-order model, and Ma is less than or equal to 4. The invention has the advantages that the repeatability of tests of different train numbers in the same state is well matched, and the accuracy of the calculated output Ma number and the calculated internal flow resistance coefficient is obviously improved.
Drawings
Any feature disclosed in this specification may be replaced by another equivalent or similar feature for similar purposes, unless expressly stated otherwise.
Fig. 1 is a schematic perspective view of a pressure measuring rake in embodiment 1.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a rear view of fig. 2.
Fig. 4 is a schematic perspective view of the embodiment 1 in which the total pressure pipe and the static pressure pipe are connected by the second pressure stabilizer.
Fig. 5 is a front view of fig. 4.
Fig. 6 is a schematic structural diagram of a second voltage stabilization device in embodiment 1.
Fig. 7 is a schematic perspective view of the connection between the total pressure pipes in embodiment 1 by the first pressure stabilizer.
Fig. 8 is a front view of fig. 7.
Fig. 9 is a schematic structural diagram of a first voltage stabilization device in embodiment 1.
Fig. 10 is a schematic perspective view of a single measuring unit in example 1.
The labels in the figure are: 1. total pressure pipe, 2, static pressure pipe, 3, first voltage stabilizer, 4, second voltage stabilizer, 5, first middle connecting section, 6, first side connecting pipe, 7, first intermediate part, 8, first water conservancy diversion portion, 9, the harrow body, 20, second middle connecting section, 21, second side connecting pipe, 22, third side connecting pipe, 23, second intermediate part, 24, second water conservancy diversion portion.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Example 1
The present example provides a pressure measuring rake, which comprises a rake body 9 and a measuring component, wherein the measuring component is arranged on the rake body 9. Wherein, the measuring assembly comprises a total pressure pipe 1, a static pressure pipe 2, a first pressure stabilizing device 3 and a second pressure stabilizing device 4. Each set of measuring assemblies comprises one static pressure pipe 2 and a plurality of total pressure pipes 1.
The operation steps of the pressure measuring rake stabilizing method of the embodiment are as follows.
(1) Preliminary installation
The measurement assemblies may be in multiple groups, depending on design requirements. In one example, the measuring assemblies are four groups, each group comprises one static pressure pipe 2 and four total pressure pipes 1, the four total pressure pipes 1 are divided into two groups, and the total pressure pipes 1 are uniformly distributed on two sides of the static pressure pipe 2.
And (3) respectively connecting the static pressure pipe 2 and the total pressure pipe 1 with the rake body 9 to finish the initial installation of the pressure measuring rake.
(2) Total pressure pipe stability
Therefore, the present application designs a brand new first voltage stabilizer 3, as shown in fig. 7 to 9.
The first pressure stabilizing device 3 comprises a first middle connecting section 5 and a first side connecting pipe 6 matched with the total pressure pipe 1, the first middle connecting section 5 comprises a first middle part 7 and first flow guide parts 8, the first flow guide parts 8 are a first group, and the number of the first group is two; along the axial direction of total pressure pipe 1, first water conservancy diversion portion 8 symmetry sets up in first intermediate part 7 both sides. The first side connecting pipe 6 is in a hollow tubular shape, and the axial direction of the first side connecting pipe 6 is parallel to the axial direction of the total pressure pipe 1. The first side connecting pipes 6 are of a second group and the second group is at least two, and the first side connecting pipes 6 are respectively arranged at two ends of the first middle connecting section 5. Meanwhile, the first side connecting pipe 6 of the first voltage stabilizer 3 is sleeved on the total pressure pipe 1, and the first voltage stabilizer 3 can keep relatively static with the total pressure pipe 1.
The first pressure stabilizer 3 cup joints the total pressure pipe 1, and the first side connecting pipe 6 aperture of the first pressure stabilizer 3 is the same as the diameter of the total pressure pipe 1 (namely, the inner diameter of the first side connecting pipe 6 is the same as the outer diameter of the total pressure pipe 1). In order to prevent the first pressure stabilizer 3 from moving axially along the total pressure pipe 1, after the first pressure stabilizer 3 is sleeved with the total pressure pipe 1, the first pressure stabilizer 3 is bonded at the rear edge of the first pressure stabilizer 3 by glue (in this structure, the glue is solidified to form a bonding member). In this embodiment, the lengths of the first side connecting pipe 6 and the first intermediate connecting section 5 along the axial direction of the total pressure pipe 1 are the same.
In this embodiment, in one measurement assembly, the first side connecting pipes 6 at two ends of the first voltage stabilizer 3 are respectively sleeved on the total pressure pipe 1; as shown in the figure, in one measuring assembly, four total pressure pipes 1 are divided into two groups, and the two groups of total pressure pipes 1 are positioned on two sides of a static pressure pipe 2; the two static pressure pipes 2 on one side are connected in front by a first pressure stabilizer 3. The length of the first pressure stabilizer 3 along the axial direction of the total pressure pipe 1 is not more than 5mm, and the front edge and the rear edge of the first intermediate connecting section 5 are processed by bevel guide angles (in the embodiment, the first flow guide part 8 is wedge-shaped, and the thicker end of the first flow guide part 8 is connected with the first intermediate part 7) so as to reduce the influence of shock waves and expansion waves caused by supersonic airflow on the force measurement test result. In this structure, the first intermediate connection section 5 is thick in the middle and thin on both sides in the axial direction of the total pressure pipe 1.
(3) Static pressure tube stabilization
The application also designs a second voltage stabilizer 4, as shown in fig. 4-6.
The second pressure stabilizer 4 comprises a second middle connecting section 20, a second side connecting pipe 21 matched with the total pressure pipe 1 and a third side connecting pipe 22 matched with the static pressure pipe 2. The second intermediate connecting section 20 includes a second intermediate portion 23 and second flow guide portions 24, the second flow guide portions 24 are a third group and the third group is two; the second flow guiding portions 24 are symmetrically arranged on both sides of the second middle portion 23 along the axial direction of the total pressure pipe 1. The second side connecting pipe 21 and the third side connecting pipe 22 are respectively tubular, the axial direction of the second side connecting pipe 21, the axial direction of the third side connecting pipe 22 and the axial direction of the static pressure pipe 2 are parallel to each other, and the second side connecting pipe 21 and the third side connecting pipe 22 are respectively arranged at two ends of the second middle connecting section 20.
In this embodiment, the second voltage stabilizer 4 is a V-shaped whole, and includes two second middle connection sections 20 and two second side connection pipes 21, and a third side connection pipe 22 is shared between the two second middle connection sections 20. In one measuring component, a second side connecting pipe 21 is sleeved on the total pressure pipe 1, and a third side connecting pipe 22 is sleeved on the static pressure pipe 2; as shown in fig. 4, a third side connecting pipe 22 at the center of the second pressure stabilizer 4 is sleeved on the static pressure pipe 2, the third side connecting pipe 22 is correspondingly connected with the second side connecting pipe 21 into a whole through two second middle connecting sections 20, the second side connecting pipes 21 at two sides of the second pressure stabilizer 4 are respectively sleeved on the total pressure pipe 1, and the second side connecting pipe 21 and the total pressure pipe 1 and the third side connecting pipe 22 and the static pressure pipe 2 are respectively kept relatively static. The second side connecting pipe 21 has an inner diameter identical to the outer diameter of the total pressure pipe 1, and the third side connecting pipe 22 has an inner diameter identical to the outer diameter of the static pressure pipe 2.
In this embodiment, the second pressure stabilizer 4 sleeves the static pressure pipe 2 and the two total pressure pipes 1 close to the support rod, and in order to prevent the second pressure stabilizer 4 from moving along the axial direction of the static pressure pipe 2 and the total pressure pipes 1, the second pressure stabilizer 4 is sleeved with the static pressure pipe 2 and the total pressure pipes 1 and then is bonded at the rear edge by glue. In this embodiment, the lengths of the second side connecting tube 21, the second middle connecting section 20 and the third side connecting tube 22 along the axial direction of the static pressure tube 2 are the same. The second pressure stabilizer 4 is not more than 5mm in axial length along the static pressure pipe 2, and the front and rear edge bevel angle guide treatment is performed (in the embodiment, the second flow guide part 24 is wedge-shaped, and the thicker end of the second flow guide part 24 is connected with the second middle part 23) so as to reduce the influence of shock waves and expansion waves caused by supersonic airflow on the force measurement test result.
In a measuring assembly, the total pressure pipe 1 and the static pressure pipe 2 are connected into a whole through a first pressure stabilizing device 3 and a second pressure stabilizing device 4. The schematic perspective view of a single measuring assembly is shown in fig. 10, and the whole pressure measuring target is shown in fig. 1-3.
(4) And (5) repeating the steps (2) and (3) to finish the installation of the total pressure pipe 1 and the static pressure pipe 2 in all the measuring assemblies.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (10)
1. The pressure measuring rake is characterized by comprising a rake body and at least two groups of measuring assemblies, wherein the measuring assemblies are arranged on the rake body;
the measuring assembly comprises at least two total pressure pipes, a static pressure pipe, a first pressure stabilizing device and a second pressure stabilizing device;
the first pressure stabilizing device comprises a first middle connecting section and a first side connecting pipe matched with the total pressure pipe, the first middle connecting section comprises a first middle part and first flow guide parts, and the first flow guide parts are a first group and two first groups; the first flow guide parts are symmetrically arranged on two sides of the first middle part along the axial direction of the total pressure pipe;
the first side connecting pipes are tubular, the axial direction of the first side connecting pipes is parallel to the axial direction of the total pressure pipe, the first side connecting pipes are in a second group, the number of the second group is at least two, and the first side connecting pipes are respectively arranged at two ends of the first middle connecting section;
a first side connecting pipe of the first voltage stabilizer is sleeved on the total pressure pipe, and the first voltage stabilizer can keep relative rest with the total pressure pipe;
the second pressure stabilizing device comprises a second middle connecting section, a second side connecting pipe matched with the total pressure pipe and a third side connecting pipe matched with the static pressure pipe, the second middle connecting section comprises a second middle part and second flow guide parts, the second flow guide parts are of a third group, and the third group is two; the second flow guide parts are symmetrically arranged on two sides of the second middle part along the axial direction of the total pressure pipe;
the second side connecting pipe and the third side connecting pipe are respectively tubular, the axial direction of the second side connecting pipe, the axial direction of the third side connecting pipe and the axial direction of the static pressure pipe are mutually parallel, and the second side connecting pipe and the third side connecting pipe are respectively arranged at two ends of the second middle connecting section;
the second side connecting pipe is sleeved on the total pressure pipe, the second pressure stabilizing device can keep relative static with the total pressure pipe, the third side connecting pipe is sleeved on the static pressure pipe, and the second pressure stabilizing device can keep relative static with the static pressure pipe.
2. The pressure measuring rake according to claim 1, wherein the first flow guide part is wedge-shaped.
3. The pressure measuring rake according to claim 1, wherein the second flow guide part is wedge-shaped.
4. The pressure measuring rake according to claim 1, wherein the first intermediate connecting section and the second intermediate connecting section are respectively thick in the middle and thin in the two sides along the axial direction of the total pressure pipe.
5. The pressure measuring rake according to claim 1, wherein the lengths of the first middle part, the first flow guide part, the second middle part and the second flow guide part are respectively less than or equal to 5mm along the axial direction of the total pressure pipe.
6. The pressure measuring rake according to any one of claims 1 to 5, further comprising an adhesive member, wherein the adhesive member fixedly connects the first pressure stabilizer and the total pressure pipe, the second pressure stabilizer and the total pressure pipe, and the second pressure stabilizer and the static pressure pipe, respectively.
7. The method for stabilizing a pressure measuring rake according to any one of claims 1 to 6, comprising the steps of:
a. preliminary installation
Respectively connecting the static pressure pipe and the total pressure pipe with the rake body to finish the initial installation of the pressure measuring rake;
b. total pressure pipe stability
In one measuring assembly, first side connecting pipes at two ends of a first pressure stabilizing device are respectively sleeved on total pressure pipes;
c. static pressure tube stabilization
In one measuring assembly, a second side edge connecting pipe on a second pressure stabilizer is sleeved on a total pressure pipe, a third side edge connecting pipe on the second pressure stabilizer is sleeved on a static pressure pipe, and the total pressure pipe and the static pressure pipe are connected into a whole through a first pressure stabilizer and a second pressure stabilizer;
d. and (c) repeating the steps b and c to finish the installation of the total pressure pipe and the static pressure pipe in all the measuring assemblies.
8. The method of stabilizing according to claim 7, further comprising the steps of:
e. and d, after the step d is finished, carrying out an ultrasonic wind tunnel test, and measuring total pressure and static pressure values.
9. The stabilizing method according to claim 7, wherein in the step b, the first pressure stabilizer is fixedly connected with the total pressure pipe through an adhesive member;
and c, respectively and fixedly connecting the static pressure pipe with the second pressure stabilizing device and the total pressure pipe by using bonding pieces.
10. The method of claim 9, wherein in the step b, the adhesive member is disposed on the upwind side of the first pressure stabilizer;
in the step c, the bonding piece is arranged on the upwind side of the second pressure stabilizing device.
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