CN105466663B - The accurate device for measuring wind-tunnel Transonic Test section local air flow angle of deviation - Google Patents
The accurate device for measuring wind-tunnel Transonic Test section local air flow angle of deviation Download PDFInfo
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- CN105466663B CN105466663B CN201510907212.2A CN201510907212A CN105466663B CN 105466663 B CN105466663 B CN 105466663B CN 201510907212 A CN201510907212 A CN 201510907212A CN 105466663 B CN105466663 B CN 105466663B
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Abstract
The invention discloses a kind of accurate devices for measuring wind-tunnel Transonic Test section local air flow angle of deviation, including probe assembly, axis pin, Coupling Shaft, micro-adjusting mechanism and pedestal, the probe assembly passes through the axis pin and the switching axis connection, the Coupling Shaft is fixed on the pedestal, it is fixed in the Coupling Shaft by the micro-adjusting mechanism, to adjust the pitching of the probe assembly.The present apparatus achievees the purpose that accurately to measure air-flow angle of deviation by improving the installation accuracy of probe, and at low cost, good economy performance, and simple in structure is installed, is easy to adjust, being the very strong air-flow deflection angle measuring device of a set of practicability.
Description
Technical field
The present invention relates to the flow field school measurement equipments in wind tunnel test, are used for the office of calibration wind tunnel Transonic Test section flow field
Portion flows to, particular by the posture for measuring probe in wind-tunnel is accurately controlled, with its accurate measurement Transonic Test section center
Local air flow angle of deviation Δ β in local air flow angle of deviation Δ α and horizontal plane in axis vertical guide.
Background technology
The purpose that flow field school is surveyed is to examine performance of wind tunnel and test equipment performance, and whether understanding flow field quality, which reaches regulation, is wanted
It asks, to ensure the quality of wind tunnel test data.Air-flow angle of deviation is the important indicator of Flow Field in Wind Tunnel quality, refer to gas streamline with
The angle of wind-tunnel is the angle Δ β with wind-tunnel axis in the interior angle Δ α and horizontal plane with wind-tunnel axis of vertical guide after decomposition,
As shown in Figure 1.The qualified index of sub- Transonic Flow local air flow angle of deviation is | Δ α |≤0.1 °, | Δ β | it is≤0.1 °, advanced
Index is | Δ α |≤0.05 °, | Δ β |≤0.05 ° (low speed is 0.5 °/0.1 °).The high request of air-flow angle of deviation index so that
The accurately measurement of air-flow angle of deviation is particularly important.Fig. 1 is air-flow angle of deviation and probe established angle schematic diagram, it is seen that air-flow angle of deviation
The premise accurately measured be probe pitch angle α=0 and yaw angle β=0 and ensure installation accuracy.So measured using probe
On the basis of air-flow angle of deviation, by improving installation accuracy of the probe in wind-tunnel, you can the attitude error of probe is substantially reduced,
To accurately measure air-flow angle of deviation.
Pervious air-flow deflection angle measuring device is to be connected to probe assembly on wind-tunnel holder by strut, connector, is visited
Needle posture is controlled by attack angle mechanism, and there are prodigious installation errors, have a significant impact to the accuracy of measurement result.This hair
Bright device can be accurately controlled posture of the probe in wind-tunnel by the design in structure, as shown in Figure 1, pitch angle refers to visiting
Angle α of the needle axis in vertical guide with wind-tunnel axis, yaw angle refer to folder of the probe axis in the horizontal plane with wind-tunnel axis
Angle beta.Present apparatus probe pitch angle, yaw angle installation accuracy reach ± 1 ', greatly reduce probe Installation posture error pair
The influence of measurement result.And the present apparatus is simple in structure, installation and adjustment are convenient, is the very strong air-flow deflection angular measurement of a set of practicability
Device.
Invention content
The technology of the present invention solves the problems, such as：Overcome the shortcomings of existing measuring device, improves peace of the probe in wind-tunnel
Precision is filled, attitude error of the probe in wind-tunnel can be effectively reduced, to accurately measure test chamber central shaft
Local air flow angle of deviation in line horizontal plane and in vertical plane.
The accurate device for measuring wind-tunnel Transonic Test section local air flow angle of deviation of the present invention includes probe assembly, pin
Axis, Coupling Shaft, micro-adjusting mechanism and pedestal, the probe assembly pass through the axis pin and the switching axis connection, the Coupling Shaft
It is fixed on the pedestal, is fixed in the Coupling Shaft by the micro-adjusting mechanism, to adjust bowing for the probe assembly
The elevation angle.
It is preferred that the probe assembly includes probe and transfer platform, the transfer platform includes bullet and the rear portion of front end
Fork-shaped wall, the probe grafting and the front end for being fixed on the bullet, the Coupling Shaft is inserted into the bullet from rear portion,
And it is fixed with the axis pin.
It is preferred that the micro-adjusting mechanism includes trimming bolt and auxiliary mounting blocks, the auxiliary mounting blocks are rectangle frameworks,
It is sleeved on the outside of the fork-shaped wall, is fixed in the Coupling Shaft with screw by the mounting hole on its two side, in institute
It states and is respectively arranged with the trimming bolt on the upper lower wall of auxiliary mounting blocks, by adjusting the trimming bolt, can finely tune described
The pitch angle of probe assembly.
It is preferred that the probe is four hole probes or five-hole probe.
It is preferred that the pedestal includes stage casing, tail cone, riser and bottom plate, the Coupling Shaft is connected by column cooperation with the stage casing
It connects, is fixed using jackscrew in a manner of it can dismantle, between the stage casing and the riser, the riser and the floor
Between using connection is respectively welded.
It is preferred that further including positioning plate, the positioning plate is positioning tool, to ensure that it is vertical that probe axis is located at test section
In the plane of symmetry, after installing, the positioning plate is removed..
It is an advantage of the invention that：
The present apparatus can accurately control the posture of probe, the installation of probe pitch angle, yaw angle by the design in structure
Precision reachable ± 1 ' reduces influence of the probe Installation posture error to measurement result, can accurately measure air-flow angle of deviation；
The present apparatus achievees the purpose that accurately to measure air-flow angle of deviation by improving the installation accuracy of probe, at low cost, economical
Property it is good and simple in structure, installation, it is easy to adjust, be the very strong air-flow deflection angle measuring device of a set of practicability.
Description of the drawings
Fig. 1 (1), (2) are air-flow angle of deviation and probe established angle schematic diagram.
Fig. 2 is single unit system structural schematic diagram of the present invention.
Fig. 3 is the partial sectional view of the longitudinal directions Fig. 2.
Fig. 4 is the partial sectional view of Fig. 2 transverse directions.
Specific implementation mode
As shown in Fig. 1 (1), (2) and Fig. 2, the present invention provides a kind of accurate measurement wind-tunnel Transonic Test section part gas
Flow angle of deviation device, including probe assembly 1, axis pin 2, Coupling Shaft 3, trimming bolt 4, auxiliary mounting blocks 5, stage casing 6, tail cone 7,
Riser 8, bottom plate 9, positioning plate 10.
Probe assembly 1 is made of probe 1-1 and transfer platform 1-2, and the two is column cooperation, is fixed as one with jackscrew and splicing
It is whole, no longer dismantle.Probe assembly 1 is connect by axis pin 2 with Coupling Shaft 3, and is adjusted by trimming bolt 4, auxiliary mounting blocks 5
Its pitch angle.After the assembly such as probe 1-1, transfer platform 1-2, Coupling Shaft 3, trimming bolt 4, auxiliary mounting blocks 5 are integrated, pass through
Column cooperation is connect with the stage casing of pedestal, is fixed using jackscrew, detachably.Pedestal is weldment, by stage casing 6, tail cone 7, riser 8,
Bottom plate 9 forms.Bottom plate 7 is connect by bolt with test section lower wall panels.
As shown in Fig. 2, positioning tool of the positioning plate 10 between test section sidewall paneling and bottom plate 7, ensures probe axis position
Reach ± 1 ' in probe yaw angle installation accuracy in test section vertical symmetry plane, can be made.After installing, positioning plate 10 is removed.
As shown in Figure 2, Figure 3 and Figure 4, probe 1-1 is four hole probes or five-hole probe.Transfer platform 1-2 includes front end
The fork-shaped wall of bullet and rear portion, the probe grafting and the front end for being fixed on bullet, Coupling Shaft 3 are inserted into taper from rear portion
Body, and fixed with axis pin.It is cuboid framework to assist mounting blocks 5, is sleeved on the outside of fork-shaped wall, passes through its framework two
Mounting hole on side wall is fixed on screw in Coupling Shaft 3, and trimming bolt 4 is respectively set on the upper lower wall of auxiliary mounting blocks 5,
By adjusting trimming bolt 4, the pitch angle of probe assembly 1 can be finely adjusted.Probe assembly 1 passes through axis pin 2 and Coupling Shaft 3
After connecting, intense adjustment probe 1-1 pitch angles are carried out by trimming bolt 4 and auxiliary mounting blocks 5, utilize high-precision quadrant
Instrument measures, and the pitch angle installation accuracy of probe 1-1 can be made to reach ± 1 '.
The probe assembly of the present invention is connect by Coupling Shaft 3 with the stage casing of pedestal, ensures that probe axis is located at wind tunnel test
In the section vertical plane of symmetry, yaw angle β installation accuracies is made to reach ± 1 '.Probe 1-1 is controlled by the trimming bolt 4 in Coupling Shaft 3
Pitch angle state ensure that probe 1-1 axis are located at test chamber horizontal symmetrical face by high-precision quadrant duplicate measurements
It is interior, so that pitch angle α installation accuracies is reached ± 1 '.Probe pressure tap connects pressure measurement hose after being drawn by steel pipe, through in Coupling Shaft 3
Interior is stayed under chamber, base recess to test section, by TT＆C system acquisition, analysis data.It is bent by pressure difference coefficient and probe correction
Line can acquire in test section plane of symmetry local air flow angle of deviation Δ β in local air flow angle of deviation Δ α and horizontal plane.
More than, the preferred embodiment of the present invention is illustrated, but the present invention is not limited to above-described embodiments.It is right
For those skilled in the art, in the scope recorded in claims, it should be apparent that it is conceivable that various modifications
Or fixed case, the technology scope of the present invention is also belonged to certainly.
Claims (5)
1. a kind of accurate device for measuring wind-tunnel Transonic Test section local air flow angle of deviation, it is characterised in that：Including probe groups
Part, axis pin, Coupling Shaft, micro-adjusting mechanism and pedestal, the probe assembly include probe and transfer platform, and the transfer platform includes
The bullet of front end and the fork-shaped wall at rear portion, the probe grafting and the front end for being fixed on the bullet, the Coupling Shaft from
The bullet is inserted at rear portion, and is fixed with the axis pin, and the Coupling Shaft is fixed on the pedestal, by described micro-
Regulating mechanism is fixed in the Coupling Shaft, and to adjust the pitch angle of the probe assembly, the micro-adjusting mechanism includes fine tuning spiral shell
Bolt and auxiliary mounting blocks, the auxiliary mounting blocks are cuboid frameworks, are sleeved on the outside of the fork-shaped wall, pass through its both sides
Mounting hole on wall is fixed on screw in the Coupling Shaft, is respectively arranged on the upper lower wall of the auxiliary mounting blocks described
Trimming bolt can finely tune the pitch angle of the probe assembly by adjusting the trimming bolt.
2. the accurate device for measuring wind-tunnel Transonic Test section local air flow angle of deviation according to claim 1, feature
It is：The probe is four hole probes or five-hole probe.
3. the accurate device for measuring wind-tunnel Transonic Test section local air flow angle of deviation according to claim 1, feature
It is：The pedestal includes stage casing, tail cone, riser and bottom plate, and the Coupling Shaft is coordinated by column to be connect with the stage casing, with energy
The mode enough dismantled is fixed using jackscrew, is divided between the stage casing and the riser, between the riser and the bottom plate
It is not welded to connect.
4. the accurate device for measuring wind-tunnel Transonic Test section local air flow angle of deviation according to claim 3, feature
It is：Further include positioning plate, the positioning plate is positioning tool, to ensure that probe axis is located at test section vertical symmetry plane
It is interior.
5. the accurate device for measuring wind-tunnel Transonic Test section local air flow angle of deviation according to claim 1, feature
It is：After the probe of the probe assembly and transfer platform column cooperation, using jackscrew and it is glued fixed be integral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510907212.2A CN105466663B (en) | 2015-12-09 | 2015-12-09 | The accurate device for measuring wind-tunnel Transonic Test section local air flow angle of deviation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510907212.2A CN105466663B (en) | 2015-12-09 | 2015-12-09 | The accurate device for measuring wind-tunnel Transonic Test section local air flow angle of deviation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105466663A CN105466663A (en) | 2016-04-06 |
| CN105466663B true CN105466663B (en) | 2018-08-07 |
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| CN201510907212.2A Expired - Fee Related CN105466663B (en) | 2015-12-09 | 2015-12-09 | The accurate device for measuring wind-tunnel Transonic Test section local air flow angle of deviation |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180803B (en) * | 2017-11-30 | 2020-04-28 | 江西洪都航空工业集团有限责任公司 | Clamp for connecting attack angle simulator and multifunctional probe |
| CN108593251B (en) * | 2018-07-03 | 2023-10-17 | 中国空气动力研究与发展中心高速空气动力研究所 | Probe supporting and moving measuring device for measuring flow of wall area near wall of groove |
| CN109238635A (en) * | 2018-09-21 | 2019-01-18 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of device and its application for measuring flow rotation intensity |
| CN110082059A (en) * | 2019-04-22 | 2019-08-02 | 南京航空航天大学 | A kind of New Wind Tunnel flow field Jiao Ce mechanism and application method |
| CN113865823B (en) * | 2021-09-27 | 2022-05-13 | 中国人民解放军国防科技大学 | Quickly-replaceable pneumatic probe supporting and clamping device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19715796A1 (en) * | 1997-04-16 | 1998-10-22 | Inst Luft Kaeltetech Gem Gmbh | Calibration appliance for speed sensor |
| CN204330280U (en) * | 2015-01-18 | 2015-05-13 | 中南大学 | Train parting flow field on-site testing device |
| CN205280324U (en) * | 2015-12-09 | 2016-06-01 | 中国航天空气动力技术研究院 | Precision measurement wind -tunnel is device of local air current angle of declination of test section transonic speed |
-
2015
- 2015-12-09 CN CN201510907212.2A patent/CN105466663B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19715796A1 (en) * | 1997-04-16 | 1998-10-22 | Inst Luft Kaeltetech Gem Gmbh | Calibration appliance for speed sensor |
| CN204330280U (en) * | 2015-01-18 | 2015-05-13 | 中南大学 | Train parting flow field on-site testing device |
| CN205280324U (en) * | 2015-12-09 | 2016-06-01 | 中国航天空气动力技术研究院 | Precision measurement wind -tunnel is device of local air current angle of declination of test section transonic speed |
Non-Patent Citations (3)
| Title |
|---|
| 压声速气流中五孔探针的校准及应用;符澄 等;《试验流体力学》;20110630(第3期);第87-90页 * |
| 大迎角细长体非对称空间流场特性的试验研究;顾蕴松 等;《实验流体力学》;20050630;第19卷(第2期);第01-06页 * |
| 旋流五孔探针研制;杨国才;《推进技术》;19930630(第3期);第69-75页 * |
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| CN105466663A (en) | 2016-04-06 |
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