CN105509994B - It is method that a kind of low-speed wind tunnel flutter test model guard wire, which knots, - Google Patents
It is method that a kind of low-speed wind tunnel flutter test model guard wire, which knots, Download PDFInfo
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- CN105509994B CN105509994B CN201510849132.6A CN201510849132A CN105509994B CN 105509994 B CN105509994 B CN 105509994B CN 201510849132 A CN201510849132 A CN 201510849132A CN 105509994 B CN105509994 B CN 105509994B
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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
- G01M9/08—Aerodynamic models
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- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
Knotting the invention discloses a kind of low-speed wind tunnel flutter test model guard wire is method.It is that method includes the following steps: step 1 that the low-speed wind tunnel flutter test model guard wire, which knots: determining knot position and the tie point position of guard wire；Step 2: guard wire being made to form first segment and second segment；Step 3: first segment and the mutual lap wound of second segment knot so that first segment and second segment be made to be formed by way of lap wound, this, which knots, is located at the position that knots；Knotting has an annulus and a watershed line, and watershed line is folded to be located on annulus, and annulus is divided into the first semi-ring and the second semi-ring in the projection of annulus by watershed line, and second segment passes through the first semi-ring and across watershed line, to stretch out from the second semi-ring.Be method using this, direct bearing guard wire by the mutual clinching of cotton rope in knot and friction so that knot location not play, draw more friction-tight power is bigger；Guard wire is unbuttoned conveniently when unclamping, and is easy to adjust protection line length with the change of adaptive model equilbrium position.
Description
Technical field
The present invention relates to wind-tunnel flutter test technical fields, protect more particularly to a kind of low-speed wind tunnel flutter test model
Knot button system method, low-speed wind tunnel flutter test model guard wire and wind-tunnel flutter test system.
Background technique
During low-speed wind tunnel flutter test, to avoid model damage from reaching nonexpondable purpose, protection is generallyd use
Line protects model.When blowing test, guard wire is in relaxed state；When flutter occurs, the Oscillation Amplitude of model is anxious
Play expands, it is possible to cause model to destroy, at this moment to lose no time to tense guard wire, protect model.To play good protection effect,
Guard wire mostly uses seizing wire.Now there are two types of more common fixed form, one is by rope end system fast knot, another kind be by
Then the multiple inflection of guard wire reaches fixed effect with soft iron wire winding.It but is the mode of fast knot in adjustment knot location process
In it is extremely inconvenient, and keep the mode reliability of soft iron wire poor, it is possible that guard wire play, failure.Thus existing normal
With fixed form, the effect is unsatisfactory, carrys out very big inconvenience to test tape.
Thus, it is desirable to have a kind of technical solution overcomes or at least mitigates at least one drawbacks described above of the prior art.
Summary of the invention
Knotting the purpose of the present invention is to provide a kind of low-speed wind tunnel flutter test model guard wire, to be method overcome or extremely
Mitigate at least one drawbacks described above in the prior art less.
To achieve the above object, it is method that the present invention, which provides a kind of low-speed wind tunnel flutter test model guard wire and knots, described
It is that method includes the following steps: that low-speed wind tunnel flutter test model guard wire, which knots,
Step 1: according to model, determining knot position and the tie point position of guard wire；
Step 2: centered on tie point position, bending guard wire, guard wire is made to form first segment and second segment；
Step 3: the first segment and the mutual lap wound of the second segment, so that the first segment be made to pass through with the second segment
The mode of lap wound, which is formed, to knot, this, which knots, is located at the position that knots；It is described to knot with an annulus and a point of water
Line, the watershed line is folded to be located on the annulus, and the annulus is divided into the in the projection of the annulus by the watershed line
One semi-ring and the second semi-ring, the second segment passes through first semi-ring and across the watershed line, thus from the second semi-ring
It stretches out.
Preferably, the first segment and the mutual lap wound of the second segment are specifically comprised the following steps: in the step 3
Step 31: first segment being overlapped to second segment, to make first segment and second segment lap-joint to the connection point
Set to be formed one in tripleplane direction at least one direction be closed circle, wherein first segment from the first segment with
It is the first segment at second segment lap-joint to the tie point position, the first segment is from the first segment and second segment lap-joint
To far from being the second segment at the tie point position, the second segment is from the first segment and second segment lap-joint to the company
It is third segment at connecting point position, the second segment is from the first segment and second segment lap-joint to far from the tie point position
Place is the 4th segment；
Step 32: by the first segment described in the 4th segment lap wound, to form the second lap-joint；Second overlap joint
4th segment is divided into the 4th segment first segment and the 4th segment second segment by place；
Step 33: by the 4th segment second segment across the third segment, so that third lap-joint is formed, described
The 4th segment second segment is divided into the 4th the first segment of segment second segment and the 4th segment second segment by three lap-joints
Two segments；At this point, the second segment of the 4th segment second segment is taken and is placed on second segment, takes and put forward sequence and described the
One section of overlap joint for being formed by the second lap-joint with the overlap joint of second segment sequence, the 4th segment and first segment
The overlap joint sequence that sequence and the 4th segment second segment are formed by third lap-joint with the third segment is contrary；
Step 34: second segment overlaps the first segment of the 4th segment second segment, so that the 4th lap-joint is formed,
From the 4th lap-joint, third segment described in the second segment lap wound forms the 5th lap-joint, second segment and institute
State overlap joint sequence of the 4th the first segment of segment second segment in the 4th lap-joint and third described in the second segment lap wound
The overlap joint sequence that segment is formed by the 5th lap-joint is opposite；It is small that second segment is separated into second by the 5th lap-joint
Section first segment and the second segment second segment；
Step 35: the second segment second segment passes through the-the four segment of-the four segment first segment of third lap-joint the
Two sections of circles surrounded, and be pierced by from the circle.
The present invention also provides a kind of low-speed wind tunnel flutter test model guard wire, the low-speed wind tunnel flutter test models
Guard wire is that method is formed by low-speed wind tunnel flutter to be knotted using low-speed wind tunnel flutter test model guard wire as described above
Test model guard wire.
The present invention also provides a kind of wind-tunnel flutter test system, the wind-tunnel flutter test system includes wind-tunnel, flutter
Model and low-speed wind tunnel flutter test model guard wire as described above, the flutter model pass through the low-speed wind tunnel flutter
Test model guard wire is mounted in the wind-tunnel.
Being knotted using low-speed wind tunnel flutter test model guard wire of the invention is method, and direct bearing guard wire passes through knot middle line
Mutual clinching and friction restrict so that knot location not play, draw more friction-tight power is bigger；When guard wire is in releasing orientation, solution
Button is convenient, is easy to adjust protection line length with the change of adaptive model equilbrium position.
Detailed description of the invention
Fig. 1 be it is according to an embodiment of the invention knotted by low-speed wind tunnel flutter test model guard wire be method after the completion of
Protective rope structural schematic diagram.
Fig. 2 be the low-speed wind tunnel flutter test model guard wire of embodiment illustrated in fig. 1 knot be method protective rope substep
Operation chart.
Fig. 3 be the low-speed wind tunnel flutter test model guard wire of embodiment illustrated in fig. 2 knot be method protective rope substep
Operation chart, wherein after the step shown in Fig. 2 of step shown in Fig. 3.
Fig. 4 be the low-speed wind tunnel flutter test model guard wire of embodiment illustrated in fig. 3 knot be method protective rope substep
Operation chart, wherein after the step shown in Fig. 3 of step shown in Fig. 4.
Fig. 5 be the low-speed wind tunnel flutter test model guard wire of embodiment illustrated in fig. 4 knot be method protective rope substep
Operation chart, wherein after the step shown in Fig. 4 of step shown in Fig. 5.
Appended drawing reference:
Specific embodiment
To keep the purposes, technical schemes and advantages of the invention implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label indicate same or similar element or element with the same or similar functions.Described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.Under
Face is described in detail the embodiment of the present invention in conjunction with attached drawing.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as protecting the present invention
The limitation of range.
Fig. 1 be it is according to an embodiment of the invention knotted by low-speed wind tunnel flutter test model guard wire be method after the completion of
Protective rope structural schematic diagram.
Fig. 2 be the low-speed wind tunnel flutter test model guard wire of embodiment illustrated in fig. 1 knot be method protective rope substep
Operation chart.
Fig. 3 be the low-speed wind tunnel flutter test model guard wire of embodiment illustrated in fig. 2 knot be method protective rope substep
Operation chart, wherein after the step shown in Fig. 2 of step shown in Fig. 3.
Fig. 4 be the low-speed wind tunnel flutter test model guard wire of embodiment illustrated in fig. 3 knot be method protective rope substep
Operation chart, wherein after the step shown in Fig. 3 of step shown in Fig. 4.
Fig. 5 be the low-speed wind tunnel flutter test model guard wire of embodiment illustrated in fig. 4 knot be method protective rope substep
Operation chart, wherein after the step shown in Fig. 4 of step shown in Fig. 5.
It is understood that step corresponding to above-mentioned figure is not with step 1 described in the text in the present invention, step
2 so other steps it is corresponding, legend is only carried out with a kind of decomposed form.
It is that method includes the following steps: step 1 that low-speed wind tunnel flutter test model guard wire of the invention, which knots: according to mould
Type determines knot position and the tie point position 1 of guard wire；Step 2: centered on tie point position 1, guard wire is bent,
Guard wire is set to form first segment 2 and second segment 3；Step 3: first segment 2 and the mutual lap wound of second segment 3, thus make first segment 2 with
Second segment 3 is formed by way of lap wound to knot, this, which knots, is located at the position 4 that knots；Knotting has an annulus and one
Watershed line 5, watershed line 5 is folded to be located on annulus, and annulus is divided into the first semi-ring 6 and the in the projection of annulus by watershed line 5
Two semi-rings 7, second segment 3 passes through the first semi-ring 6 and across watershed line 5, to stretch out from the second semi-ring 7.
In the present embodiment, first segment and the mutual lap wound of second segment are specifically comprised the following steps: in step 3
Step 31: first segment 2 is overlapped to second segment 3, to make first segment and second segment lap-joint 8 to tie point position
1 formed one in tripleplane direction at least one direction be closed circle, wherein first segment 2 is from first segment and second
It is the first segment 9 at section lap-joint 8 to tie point position 1, first segment 2 is connect with second segment lap-joint 8 to separate from first segment
It is the second segment 10 at point position 1, second segment 3 is third segment from first segment and second segment lap-joint 8 to tie point position 1
11, second segment 3 is the 4th segment 12 from first segment and second segment lap-joint 8 to separate tie point position 1；
Step 32: by 12 the first segment of lap wound 9 of the 4th segment, to form the second lap-joint 13；Second lap-joint 13 will
4th segment 12 is divided into the 4th segment first segment 121 and the 4th segment second segment 122；
Step 33: by the 4th segment second segment 122 across third segment 11, to form third lap-joint 14, third is taken
4th segment second segment 122 is divided into the 4th the first segment of segment second segment 1221 and the 4th segment second segment by the place of connecing 14
Two segments 1222；At this point, the 4th the second segment of segment second segment 1222 is taken and is placed on the second segment 10, takes and put forward sequence and first
Section 2 with the overlap joint of second segment 3 sequentially, the 4th segment 12 and first segment 9 overlap joint that is formed by the second lap-joint 13 it is suitable
The overlap joint sequence that sequence and the 4th segment second segment 122 are formed by third lap-joint 14 with third segment 11 is contrary；
Step 34: the second segment 10 overlaps the 4th the first segment of segment second segment 1221, so that the 4th lap-joint 15 is formed,
From the 4th lap-joint 15,10 lap wound third segment 11 of the second segment forms the 5th lap-joint 16, the second segment 10 and the 4th segment
The first segment of second segment 1221 is formed by the overlap joint sequence of the 4th lap-joint 15 with 10 lap wound third segment 11 of the second segment
The overlap joint sequence of 5th lap-joint 16 is opposite；5th lap-joint 16 by the second segment 10 be separated into the second segment first segment 101 with
And the second segment second segment 102；
Step 35: the second segment second segment 102 passes through the 4th segment of the 4th segment first segment 121- of third lap-joint 14- the
Two section of 122 circle surrounded, and be pierced by from the circle.
It is understood that the application is the application of method class, and it is related to concrete operations, therefore, in narration, is intended merely to
Facilitate understanding, thus in the form of structure class describe first segment, second segment or even each segment and each segment among into
The segmentation of one step, wherein each section is integrated in real time, i.e., it is one whole line when the non-tying of entire guard wire.
As described above, certain descriptions in the application, for example, it is shown in Fig. 3, and first segment and second segment lap-joint 8 go out
In present certain steps.For example, appear in step 31, and not as in the narration of structure class, it always exists.When carry out other
When step, the first segment and second segment lap-joint can change position.
It is understood that in foregoing description, about overlapped meaning are as follows: first segment and second segment have in projecting direction
Crosspoint.And in practice, the two is stacked together, to make have positional relationship between the two.For example, in Fig. 2, first
Section overlap joint to second segment so that first segment be located on second segment (for shown in Fig. 2, first segment and second segment lap-joint shape
It is overlapped at one, so that first segment and second segment are formed two layers, first segment, which is located in figure shown in Fig. 2, to be seen for the overlapping
One layer arrived), likewise, overlapped at other positions meaning is also as above-mentioned.
The present invention also provides a kind of low-speed wind tunnel flutter test model guard wire, the protection of low-speed wind tunnel flutter test model
Line is that method is formed by low-speed wind tunnel flutter test to be knotted using low-speed wind tunnel flutter test model guard wire as described above
Model guard wire.
The present invention also provides a kind of wind-tunnel flutter test system, wind-tunnel flutter test system includes wind-tunnel, flutter model
And low-speed wind tunnel flutter test model guard wire as described above, the flutter model pass through the low-speed wind tunnel flutter test
Model guard wire is mounted in the wind-tunnel.
Finally it is noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that: it is still
It is possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equally replaced
It changes；And these are modified or replaceed, the essence for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
Mind and range.
Claims (3)
1. it is method that a kind of low-speed wind tunnel flutter test model guard wire, which knots, which is characterized in that the low-speed wind tunnel flutter test
It is that method includes the following steps: that model guard wire, which knots,
Step 1: according to model, determining the position that knots (4) and tie point position (1) of guard wire；
Step 2: centered on tie point position (1), bending guard wire, guard wire is made to form first segment (2) and second segment
(3)；
Step 3: the first segment (2) and the second segment (3) mutual lap wound, to make the first segment (2) and described second
Section (3) is formed by way of lap wound and is knotted, this, which knots, is located at described knot at position (4)；It is described to knot with an annulus
And a watershed line (5), the watershed line (5) is folded to be located on the annulus, projection of the watershed line (5) in the annulus
On the annulus is divided into the first semi-ring (6) and the second semi-ring (7), the second segment (3) passes through first semi-ring
(6) and across the watershed line (5), to be stretched out from the second semi-ring (7)；
The first segment and the mutual lap wound of the second segment are specifically comprised the following steps: in the step 3
Step 31: by first segment (2) overlap joint to second segment (3), to make first segment and second segment lap-joint (8) to the connection
Point position (1) formed one in tripleplane direction at least one direction be closed circle, wherein first segment (2) is from institute
It states at first segment and second segment lap-joint (8) to the tie point position (1) as the first segment (9), the first segment (2) is from institute
It states at first segment and second segment lap-joint (8) to the separate tie point position (1) as the second segment (10), the second segment
(3) it is from the first segment and second segment lap-joint (8) to the tie point position (1) third segment (11), described second
Section (3) is the 4th segment (12) from the first segment and second segment lap-joint (8) to the separate tie point position (1)；
Step 32: by the first segment (9) described in the 4th segment (12) lap wound, to form the second lap-joint (13)；It is described
4th segment (12) is divided into the 4th segment first segment (121) and the 4th segment second segment by the second lap-joint (13)
(122)；
Step 33: by the 4th segment second segment (122) across the third segment (11), to form third lap-joint
(14), the 4th segment second segment (122) is divided into the 4th the first segment of segment second segment by the third lap-joint (14)
(1221) and the 4th the second segment of segment second segment (1222)；At this point, the second segment of the 4th segment second segment (1222)
Take and be placed on second segment (10), take put forward sequence and the first segment (2) and the second segment (3) overlap joint sequence,
4th segment (12) and first segment (9) are formed by the overlap joint sequence and the described 4th of the second lap-joint (13)
The overlap joint sequence that segment second segment (122) is formed by third lap-joint (14) with the third segment (11) is contrary；
Step 34: second segment (10) overlaps the first segment of the 4th segment second segment (1221), to form the 4th
Lap-joint (15), from the 4th lap-joint (15), third segment (11) described in the second segment (10) lap wound forms the 5th
Lap-joint (16), second segment (10) and the first segment of the 4th segment second segment (1221) are in the 4th lap-joint
(15) overlap joint sequence is formed by the 5th lap-joint (16) with third segment (11) described in the second segment (10) lap wound
Overlap joint sequence is opposite；5th lap-joint (16) by second segment (10) be separated into the second segment first segment (101) with
And the second segment second segment (102)；
Step 35: the second segment second segment (102) passes through (14)-the four segment first segment (121) of third lap-joint-
The circle that 4th segment second segment (122) is surrounded, and be pierced by from the circle.
2. a kind of low-speed wind tunnel flutter test model guard wire, which is characterized in that the low-speed wind tunnel flutter test model protection
Line is that method is formed by low-speed wind tunnel to be knotted using low-speed wind tunnel flutter test model guard wire as described in claim 1
Flutter test model guard wire.
3. a kind of wind-tunnel flutter test system, which is characterized in that the wind-tunnel flutter test system include wind-tunnel, flutter model with
And low-speed wind tunnel flutter test model guard wire as claimed in claim 2, the flutter model are quivered by the low-speed wind tunnel
Vibration test model guard wire is mounted in the wind-tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510849132.6A CN105509994B (en) | 2015-11-26 | 2015-11-26 | It is method that a kind of low-speed wind tunnel flutter test model guard wire, which knots, |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510849132.6A CN105509994B (en) | 2015-11-26 | 2015-11-26 | It is method that a kind of low-speed wind tunnel flutter test model guard wire, which knots, |
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| Publication Number | Publication Date |
|---|---|
| CN105509994A CN105509994A (en) | 2016-04-20 |
| CN105509994B true CN105509994B (en) | 2019-04-23 |
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| CN201510849132.6A Active CN105509994B (en) | 2015-11-26 | 2015-11-26 | It is method that a kind of low-speed wind tunnel flutter test model guard wire, which knots, |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112231801A (en) * | 2020-09-25 | 2021-01-15 | 深圳市华阳国际工程设计股份有限公司 | BIM-based hole protection generation method and device and computer storage medium |
| CN113465874A (en) * | 2021-06-01 | 2021-10-01 | 中国航空工业集团公司沈阳飞机设计研究所 | Flutter model protective structure based on fiber material |
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| CN101597837A (en) * | 2009-07-08 | 2009-12-09 | 中国农业大学 | A kind of special-shaped 8 words knot machinery becomes the knot method |
| CN101887657A (en) * | 2009-05-14 | 2010-11-17 | 李景峰 | Cord knot |
| CN102235937A (en) * | 2010-05-06 | 2011-11-09 | 中国商用飞机有限责任公司 | Flutter suppression device for airplane model |
| CN104963999A (en) * | 2015-07-30 | 2015-10-07 | 李先登 | Two bowline triangular locking knot and knotting method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110106151A1 (en) * | 2009-07-22 | 2011-05-05 | Mcdevitt Dennis | Square lock suture knot |
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|---|---|---|---|---|
| US6596015B1 (en) * | 1999-07-13 | 2003-07-22 | Loma Linda University Medical Center | Methods and apparatus for annealing sutures |
| CN101887657A (en) * | 2009-05-14 | 2010-11-17 | 李景峰 | Cord knot |
| CN101597837A (en) * | 2009-07-08 | 2009-12-09 | 中国农业大学 | A kind of special-shaped 8 words knot machinery becomes the knot method |
| CN102235937A (en) * | 2010-05-06 | 2011-11-09 | 中国商用飞机有限责任公司 | Flutter suppression device for airplane model |
| CN104963999A (en) * | 2015-07-30 | 2015-10-07 | 李先登 | Two bowline triangular locking knot and knotting method |
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| CN105509994A (en) | 2016-04-20 |
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