CN206362520U - A kind of big resistance wind-tunnel balance of combined type - Google Patents
A kind of big resistance wind-tunnel balance of combined type Download PDFInfo
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- CN206362520U CN206362520U CN201720042989.1U CN201720042989U CN206362520U CN 206362520 U CN206362520 U CN 206362520U CN 201720042989 U CN201720042989 U CN 201720042989U CN 206362520 U CN206362520 U CN 206362520U
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- balance
- combined type
- section
- pole
- changeover portion
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Abstract
The utility model discloses a kind of big resistance wind-tunnel balance of combined type, including the gentle pole in combined type loop day, combined type loop balance includes free end changeover portion, No. 2 supporting sections, No. 1 supporting section, fixing end changeover portion, pole linkage sections；The pole includes taper connection section and waits straight section；The free end changeover portion is connected by the four post beams (i.e. side force, pitching moment and rolling moment measuring cell) positioned at the left and right sides with No. 2 supporting sections；The fixing end changeover portion is connected by the two post beams (i.e. lift and yawing measuring cell) positioned at both sides up and down with No. 1 supporting section；No. 1 supporting section is connected with No. 2 supporting sections by the four post beams (i.e. drag measurement element) positioned at inner side；The taper connection section connection of the pole linkage section and pole.The utility model shortens balance length, increases balance diameter, improves balance bearing capacity, improves the security of experiment, extends balance service life.
Description
Technical field
The utility model belongs to Aero-Space dynamometry experiment aerodynamics force measurement technical field, in particular for return capsule,
The dynamometry problem of the big lift-drag ratio aerodynamic model such as land device, a kind of big resistance wind-tunnel balance of combined type of the present utility model, profit
With combined type loop structure compact layout measuring cell, shorten balance length, increase balance diameter, improve holding for balance resistance component
The integral rigidity of loading capability and balance, preferably can be measured to the aerodynamic force of six components of model.
Background technology
When being related to the aerodynamics force measurement problem of the big lift-drag ratio model such as return capsule, lander, because model has directly
The characteristics of footpath is big, length is short, causes to need the drag loads size measured to be often ten times of lift load or so, loaded matching
Difficulty is big, and measurement accuracy requires high.It can increase resistance bearing capacity, but on the one hand traditional three sections by increasing balance diameter
Connect rod-type balance diameter it is typically equal with the straight section diameter such as pole, and need and between model afterbody inner chamber keeps enough
Gap with ensure the model stand under load gentle pole day after tomorrow will not with model produce space interference.Limited by model trailing space size
With enough clearance requirements, the diameter of balance and pole is smaller, it is impossible to improve drag measurement range.On the other hand this class model
Length is shorter, it is impossible to the measuring cell of three sections of series connection rod-type balances of tradition is all placed in into model intracoelomic cavity, to exposing model
Balance part also need to carry out extra design to protect balance.It can be made full use of using combined type loop structure in model
Cavity space, effectively shortens balance length, increases balance diameter, increases balance bearing capacity, is that one kind disclosure satisfy that this class model
Test the effective method of balance design and measurement request.
Utility model content
The utility model overcomes shortcoming of the prior art there is provided a kind of big resistance wind-tunnel balance of combined type,
Aim to solve the problem that three sections of series connection rod-type balances balance installation difficulty in the model aerodynamics force measurement such as return capsule, lander of tradition it is big,
Resistance bearing capacity is not enough and balance design underuses the defect in mould impression space there is provided a kind of combined type loop wind-tunnel
Strain balance and pole, complete the accurate measurement to six component aerodynamic loadings of model.The utility model is answered using unique
Box-like loop structure combines the measuring cell of six components of balance by nested mode, and the entirety for reducing balance is long
Degree, and the characteristics of mould impression space is big is rationally utilized, increase balance diameter, strengthen balance bearing capacity, particularly increase resistance
Power measures range, improves wind tunnel test security.
The technical solution of the utility model is：A kind of big resistance wind-tunnel balance of combined type, including combined type loop day
Gentle pole, combined type loop balance include free end changeover portion, No. 2 supporting sections, No. 1 supporting section, fixing end changeover portion,
Pole linkage section；The pole includes taper connection section and waits straight section；The free end changeover portion passes through positioned at the left and right sides
Four post beams (i.e. side force, pitching moment and rolling moment measuring cell) are connected with No. 2 supporting sections；The fixing end changeover portion passes through
Two post beams (i.e. lift and yawing measuring cell) positioned at both sides up and down are connected with No. 1 supporting section；No. 1 supporting section and No. 2
Supporting section is connected by the four post beams (i.e. drag measurement element) positioned at inner side；The pole linkage section and the taper connection of pole
Section connection.
Compared with prior art, the utility model has the advantages that：One is the balance design thought for having developed uniqueness, is breached
The limitation of traditional three-stage series connection rod-type day flat structure.Two are increased balance diameter, improve balance bearing capacity, particularly
Increase drag measurement range.Three be to shorten balance length, in the case where model axial dimension is limited still by balance member
Part is integrally placed inside model, improves the security of experiment, extends balance service life.Four be to expand balance design
Space, is conducive to balance component structure and layout optimization design.Five be that can be widely applied to that lift-drag ratio is larger or shock loading
During larger wind tunnel test balance is developed, with good practicality and promotional value.
Brief description of the drawings
The utility model will illustrate by example and with reference to the appended drawing, wherein：
Fig. 1 is a kind of big resistance wind-tunnel balance assembling schematic diagram of combined type of the present utility model；
Fig. 2 is a kind of big resistance wind-tunnel balance structural representation of combined type of the present utility model；
Fig. 3 is Fig. 2 top view；
Fig. 4 is Fig. 2 A-A sectional views；
Fig. 5 is Fig. 2 B-B sectional views；
Fig. 6 is Fig. 2 C-C sectional views；
In figure：1. model, 11. mould impressions, 12. model endpiece inner chambers, the big resistance strain balance of 2. combined types, 21. methods
Blue connection end, 22. free end changeover portions, 23. side force, pitching moment and rolling moment measuring cell, No. 24.2 supporting sections, 25.
Drag measurement element, No. 26.1 supporting sections, 27. lift and yawing measuring cell, 28. fixing end changeover portions, 29. poles connect
The straight section, 3. poles, 31. taper connection faces, 32. grade straight sections such as connect.
Embodiment
Fig. 1 is a kind of big resistance wind-tunnel balance assembling schematic diagram of combined type of the utility model.It is described in the utility model
A kind of big resistance wind-tunnel balance of combined type mainly includes combined type loop balance 2 and pole 3, described combined type loop day
Flat 2 are connected with model 1 by flange, and square column positioning, the big resistance wind-tunnel balance of combined type is matched somebody with somebody with pole by the conical surface
Close, chock is tensed.The maximum gauge of the big resistance wind-tunnel balance pole of described combined type is less than minimum straight inside model cavity
Footpath.
Fig. 2 is the big resistance wind-tunnel balance structural representation of the utility model combined type.Fig. 3 is Fig. 2 top view, institute
State the big resistance wind-tunnel balance element of combined type to be placed in mould impression 11, six components can be measured simultaneously.Described is close
The diameter of flanged ends 21 and combined type loop balance element diameter of dummy head are more than the diameter of model endpiece inner chamber 12.
Fig. 4 is Fig. 2 A-A sectional views, and the big resistance wind-tunnel balance of described combined type uses four posts of the left and right sides
Beam connects free end changeover portion 22 and No. 2 supporting sections 24, for measuring side force, pitching moment and rolling moment.Measure beam size
Optimized by numerical simulation.
Fig. 5 is Fig. 2 B-B sectional views, and the big resistance wind-tunnel balance of described combined type is using the post beam of inner side four connection 1
Number supporting section 26 and No. 2 supporting sections 24, for measuring resistance.Measurement beam size is optimized by numerical simulation.
Fig. 6 is Fig. 2 C-C sectional views, and the big resistance wind-tunnel balance of described combined type is using the post beam of both sides two up and down
No. 1 supporting section 26 and fixing end changeover portion 28 are connected, for measuring lift and yawing；Measurement beam size passes through numerical simulation
Optimization.
The big resistance wind-tunnel balance of combined type described in the utility model is further illustrated referring to Fig. 1-6：
The maximum of the grade of pole 3 straight section 32 is estimated that according to the minimum diameter and aerodynamic loading of model afterbody inner chamber 12
Diameter, it is ensured that there are enough gaps to make the straight sections such as afterbody inner chamber and pole not touched in process of the test.It can estimate simultaneously
Other are suitably sized for mould impression, it is ensured that combined type loop balance has enough spaces not touched because of stand under load with mould impression
Touch.
As shown in Fig. 2 being the big resistance wind-tunnel balance of the utility model combined type with reference to Fig. 3, Fig. 4, Fig. 5 and Fig. 6
Typical structure, according to balance design load and other technical indicators, primarily determines that the big resistance wind-tunnel balance element of combined type
The critical size such as length, the physical dimension of the physical dimension of each measurement beam and No. 1 supporting section and No. 2 supporting sections scope,
Pay special attention to the convenient processing in reserved enough spaces and strain gauge is pasted.
As shown in Fig. 2 with reference to Fig. 3, Fig. 4, Fig. 5 and Fig. 6, free end changeover portion 22, fixing end changeover portion 28, No. 1 support
The strain gauge adhesive surface of the measuring cell of section 26, the highest sectional dimension of No. 2 supporting sections 24 with being attached thereto is concordant, a side
Face is easy to strain gauge to paste, and on the other hand reduces stress concentration caused by sectional dimension change.
Rounding processing is made in the junction of each measuring cell, prevents stress concentration.
Pasted in side force, pitching moment and rolling moment measuring cell and lift and yawing measuring cell strain gauge
Stress groove is furnished with the correspondence position in face, the size of appropriate regulation stress groove, it is ensured that the sensitivity of each measuring unit.
According to Load Characteristics and specific design index, described each measurement beam may alternatively be the bullet of other structures form
Property element.
The big resistance wind-tunnel balance of combined type is complicated, and traditional computational methods are difficult to obtain more accurately should
Become, stress result optimizes day flat structure, it is necessary to carry out multiple numerical simulation using finite element software, and carry out strict balance and
Pole strength check, can reduce numerical simulation workload by Orthogonal Optimum Design method, improve optimization efficiency.
During wind tunnel test, the aerodynamic load acted on the big lift-drag ratio model such as return capsule, lander passes through
It is corresponding that the ring flange of combined type loop balance produces the measuring cell of the big resistance wind-tunnel balance of the utility model combined type
Deformation, it is each measurement beam relevant position surface mount strain gauge, constitute Wheatstone bridge, after being handled through computer can be achieved pair
The accurate measurement of six components of aerodynamic load acted on model.
Operation principle of the present utility model is：Using model, balance, branch lever system deformation characteristicses, using combined type return
Line structure makes full use of the sufficient space of mould impression, reaches shortening balance length, increase balance diameter, enhancing balance carrying energy
The purpose of power.Specifically, model is by after aerodynamic loading, and the gentle pole in day deforms, and most possibly with model tail
Space interference occurs for portion inner chamber, and mould impression inner space is more sufficient, can be utilized with more efficiently.Returned using combined type
Road day flat structure can measure the load of six components simultaneously by composition element, greatly shorten balance length, make the overall position of balance
In in model cavity, so as to break away from the limited limitation of model tail dimension, increase balance diameter, increase balance bearing capacity, especially
It is the measurement range for increasing balance resistance.
Claims (10)
1. a kind of big resistance wind-tunnel balance of combined type, it is characterised in that：It is described multiple including the gentle pole in combined type loop day
Box-like loop balance includes free end changeover portion, No. 2 supporting sections, No. 1 supporting section, fixing end changeover portion, pole linkage sections；It is described
Pole includes taper connection section and waits straight section；The free end changeover portion by positioned at the side force of the left and right sides, pitching moment and
Rolling moment measuring cell is connected with No. 2 supporting sections；The fixing end changeover portion passes through positioned at the lift of both sides and driftage up and down
Torgue measurement element is connected with No. 1 supporting section；No. 1 supporting section and No. 2 supporting sections pass through the i.e. drag measurement element positioned at inner side
Connection；The taper connection section connection of the pole linkage section and pole.
2. the big resistance wind-tunnel balance of a kind of combined type according to claim 1, it is characterised in that：The free end mistake
Section is crossed to be connected and positioned by square column with tested model by flanged ends.
3. the big resistance wind-tunnel balance of a kind of combined type according to claim 2, it is characterised in that：The combined type is returned
The flanged ends of road balance, free end changeover portion, No. 1, No. 2 supporting sections and fixing end changeover portion are placed in tested mould impression
In；The pole linkage section of combined type loop balance is placed in tested model endpiece inner chamber.
4. the big resistance wind-tunnel balance of a kind of combined type according to claim 3, it is characterised in that：The combined type is returned
The flanged ends of road balance, free end changeover portion, No. 1, the Zhi Jing Zhuo of No. 2 supporting sections and fixing end changeover portion be more than tested mould
The diameter of type endpiece inner chamber；The maximum gauge of the pole is less than the minimum diameter of tested model endpiece inner chamber.
5. the big resistance wind-tunnel balance of a kind of combined type according to claim 1, it is characterised in that：The pole connection
Section and the taper connection section of pole are tensed by cone match and using chock.
6. the big resistance wind-tunnel balance of a kind of combined type according to claim 1, it is characterised in that：The side force,
Stress groove is furnished with pitching moment and rolling moment measuring cell and lift and yawing measuring cell.
7. the big resistance wind-tunnel balance of a kind of combined type according to claim 1, it is characterised in that：The free end mistake
Cross survey of the corresponding end-faces of the left and right end face of section, the upper and lower end face of fixing end changeover portion, No. 1, No. 2 supporting section with being attached thereto
The strain gauge adhesive surface for measuring element is concordant.
8. the big resistance wind-tunnel balance of a kind of combined type according to claim 1, it is characterised in that：The combined type is returned
Road balance is all steel parts, overall integral structure.
9. the big resistance wind-tunnel balance of a kind of combined type according to claim 1, it is characterised in that：Each measuring cell connects
Make rounding processing in the place of connecing.
10. the big resistance wind-tunnel balance of a kind of combined type according to claim 1, it is characterised in that：Each measuring cell
Measurement beam be flexible member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720042989.1U CN206362520U (en) | 2017-01-13 | 2017-01-13 | A kind of big resistance wind-tunnel balance of combined type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720042989.1U CN206362520U (en) | 2017-01-13 | 2017-01-13 | A kind of big resistance wind-tunnel balance of combined type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206362520U true CN206362520U (en) | 2017-07-28 |
Family
ID=59380687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720042989.1U Expired - Fee Related CN206362520U (en) | 2017-01-13 | 2017-01-13 | A kind of big resistance wind-tunnel balance of combined type |
Country Status (1)
| Country | Link |
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| CN (1) | CN206362520U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644367A (en) * | 2017-01-13 | 2017-05-10 | 中国空气动力研究与发展中心高速空气动力研究所 | Compound large-resistance wind-tunnel strain balance |
| CN114152404A (en) * | 2022-02-08 | 2022-03-08 | 中国空气动力研究与发展中心超高速空气动力研究所 | High-precision pitching moment measuring device based on air bearing |
| CN114152403A (en) * | 2022-02-08 | 2022-03-08 | 中国空气动力研究与发展中心超高速空气动力研究所 | High-precision pitching moment measuring device based on mechanical bearing |
-
2017
- 2017-01-13 CN CN201720042989.1U patent/CN206362520U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644367A (en) * | 2017-01-13 | 2017-05-10 | 中国空气动力研究与发展中心高速空气动力研究所 | Compound large-resistance wind-tunnel strain balance |
| CN114152404A (en) * | 2022-02-08 | 2022-03-08 | 中国空气动力研究与发展中心超高速空气动力研究所 | High-precision pitching moment measuring device based on air bearing |
| CN114152403A (en) * | 2022-02-08 | 2022-03-08 | 中国空气动力研究与发展中心超高速空气动力研究所 | High-precision pitching moment measuring device based on mechanical bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170728 Termination date: 20220113 |