CN205748868U - The little asymmetric reentry body aerodynamics force measurement device that a kind of air-bearing supports - Google Patents
The little asymmetric reentry body aerodynamics force measurement device that a kind of air-bearing supports Download PDFInfo
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- CN205748868U CN205748868U CN201620422302.2U CN201620422302U CN205748868U CN 205748868 U CN205748868 U CN 205748868U CN 201620422302 U CN201620422302 U CN 201620422302U CN 205748868 U CN205748868 U CN 205748868U
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Abstract
This utility model provides the little asymmetric reentry body aerodynamics force measurement device that a kind of air-bearing supports, described device uses the measuring method of inside and outside balance nesting combination to realize, the rod-type six COMPONENT BALANCE assembly of central aeration selected by interior balance, the spoke structure of hollow selected by outer balance, and the air-bearing using rolling frictional damping minimum between inside and outside balance connects；Including support sting, air-bearing support means, model back segment and model leading portion；Support sting is fixed with air-bearing support means, model mechanism respectively and is connected；Air-bearing support means is connected with model back segment, and model back segment is threaded connection with model leading portion.This aerodynamics force measurement apparatus structure is simple, volume is little, integral rigidity is high, according to measurement Load Characteristics and balance structure constraint, different measurement components is distributed on inside and outside balance, it is applicable to the hypersonic wind tunnel experiment of little asymmetric reentry body aerodynamics force measurement, especially can control other big sharing parts of the load the measurement of little rolling moment is disturbed, improve and measure precision.
Description
Technical field
This utility model belongs to hypersonic wind tunnel experiment technical field, be specifically related to a kind of air-bearing support little not
Symmetrical reentry body aerodynamics force measurement device.
Background technology
Traditional axial symmetry Hypersonic reentry body (such as intercontinental missile bullet, retrievable satellite etc., hereinafter referred to as reenters
Body), general employing zero-incidence inertia reentry mode, reentry body end ablation shape is distributed the most axisymmetricly, profile is the most right
Title degree is low.The quality of reentry body, inertia and the size of particularly maximizing is the biggest, thus above-mentioned profile variation is to reentry body
The impact of aeroperformance is relatively small.And current, some Hypersonic reentry body uses small inclination reentry mode, during reentering
It is inevitably generated little asymmetric ablation phenomen, by (lifting resistance characteristic, the moment that include are special to the aerodynamic characteristics of reentry body
Property) and static and dynamic instabilities etc. produce and significantly affect；And simultaneously because of the needs of control system, system is pneumatic to small inclination reentry body
The precision of prediction of characteristic is had higher requirement, and rolling aerodynamic moment system errors constant value item precision of prediction need to reach 10-5Amount
(rolling moment certainty of measurement need to reach 10 to level-2The rolling moment due to rolling velocity of Nm magnitude, i.e. reentry body model supporting device self needs little
In 10-4Nm magnitude).Therefore, the most accurately predict the aerodynamic characteristic of little asymmetric ablation shape reentry body, be that type design is necessary
The key technical problem solved.
At present, hypersonic wind tunnel aerodynamic test is acquisition Hypersonic reentry bromhidrosis dynamic trait data, assesses it
One of Main Means of aeroperformance.The aerodynamic arrangement of novel Hypersonic reentry body, little asymmetric ablation and control system
Aerodynamic characteristic coefficient predicted precision is required high, the wind tunnel test precision of prediction of aerodynamic characteristics of nose is proposed the highest
Requirement, including little asymmetric profile high accuracy six component aerodynamic characteristics, little rolling moment high-acruracy survey etc., be all the completeest
Complete solution technical barrier certainly.
Summary of the invention
The little asymmetric reentry body that the technical problems to be solved in the utility model is to provide the support of a kind of air-bearing is pneumatic
Force measuring device.
The little asymmetric reentry body aerodynamics force measurement device that air-bearing of the present utility model supports, is characterized in: include
Support sting, air-bearing support means, model back segment, model leading portion, flat key, M6 band pin screw, positive and negative tightening nut and interior sky
Flat assembly；Support sting rear end is fixing with model mechanism in test chamber to be connected, support sting front end and air-bearing support means
In in, balance assembly connects by the 1:5 conical surface, flat key and positive and negative tightening nut are fixing；Air-bearing support means and model back segment
Between use the 1:10 conical surface connect, by M6 band pin screw position, fastening；Model back segment and model leading portion are threadably secured even
Connect.
Described air-bearing support means is the critical piece of little asymmetric reentry body aerodynamics force measurement device, including interior
Balance assembly, rear end cap, internal axle sleeve, outer shaft, floating outer shaft, drive end bearing bracket, outer balance, plain cushion, elastomeric pad, outer-hexagonal head spiral shell
Bolt, soket head cap screw and M5 band pin screw；Internal axle sleeve and outer shaft interference fit form the fixing interior axle with air loop；In
Use the 1:5 conical surface to be connected between balance assembly and internal axle sleeve, fastened by outer-hexagonal hook bolt, elastomeric pad and plain cushion；Interior sky
It is connected fastening by outer-hexagonal hook bolt, elastomeric pad and plain cushion, it is ensured that connect reliable between flat assembly with outer balance internal ring；Outward
Balance outer shroud realizes small-gap suture with floating outer shaft by M5 band pin screw and coordinates；Drive end bearing bracket, rear end cap by soket head cap screw with
Outer shaft is fixing to be connected, and forms air gap between floating outer shaft and drive end bearing bracket, rear end cap and outer shaft, floating outer shaft and outer shaft it
Between can realize rolling frictional damping less than 10-4Relatively rotating of Nm magnitude；Less phase is produced between floating outer shaft and outer shaft
To when rotating, rotated by the outer shroud of the outer balance of M5 band pin screw-driven so that produce between internal ring and the outer shroud of outer balance
Change shape, by measuring deformation output, i.e. can get rolling moment.
Described air-bearing support means and reentry body model link position are in the postmedian of model.
Described interior balance assembly includes balance body, corrugated tube, breather and plug；Balance body uses central aeration
Rod-type six COMPONENT BALANCE structure, a diameter of Ф 35mm, axial force element use tee girder structure, be placed in balance centre of moment position
Put, and relative to balance centre of moment in tee girder structure both sides layout support beams；The QUOTE of interior balance assembly 、
QUOTE 、 QUOTE 、 QUOTE And QUOTE Component uses three post rectangular column typical case knots
Structure is measured, and is symmetrically arranged in axial force element two ends, increases the horizontal lateral QUOTE of balance as far as possible 、 QUOTE 、
QUOTE And QUOTE The strain signal output of component；Fitting surface and survey is bored before and after interior balance assembly
Between amount beam, changeover portion is set, to reduce erection stress impact.
Corrugated tube in described interior balance assembly uses the materials processing identical with balance body, and breather uses stainless
Steel material, is ensured the intensity of corrugated tube by Optimal Structure Designing, is reduced the shadow of internal balance assembly axial force measuration sensitivity
Ring；Plug uses Cu alloy material processing, prevents balance body front end from leaking gas；Corrugated tube, breather and plug are built in balance
In the through hole of body hollow, with the partial ventilation loop that balance body collectively constitutes air-bearing；Corrugated tube, breather and balance
Between body, connecting portion uses the measures such as welding or glue envelope.
Described outer balance uses the spoke structure of hollow, including internal ring, outer shroud, T-type structure and rectangular column；Internal ring is
Fixing end, coordinates the conical surface to be connected with interior balance assembly by 1:5；Outer shroud is the ring flange of diameter Ф 70mm, with 4 M5 band pin spiral shells
Nail small-gap suture coordinates, and M5 band pin screw is fixing with floating outer shaft to be connected；T-type structure is the sensing element that rolling moment is measured, interior
It is connected by 4 uniform T-type structures between ring with outer shroud；Fix with internal ring in 4 the uniform rectangular columns and outer shroud being connected
Form small-gap suture between the uniform rectangular recess in 4, side to coordinate, constitute the antioverloading protection structure of outer balance.
Produce less when relatively rotating between described floating outer shaft and outer shaft, by the outer sky of M5 band pin screw-driven
Flat outer shroud rotates so that the T-type structure between internal ring and outer shroud is deformed, by measuring deformation output,
To less rolling moment；When being subject to bigger rolling moment, between floating outer shaft and outer shaft, produce bigger relative turn
Dynamic, the rectangular recess that the rectangular column of internal ring is corresponding with inside outer shroud produces and touches, and external balance carries out antioverloading protection.
The little asymmetric reentry body aerodynamics force measurement device that air-bearing of the present utility model supports has the following characteristics that
1. the method using the combination of inside and outside balance nesting measures little asymmetric reentry body six component aerodynamic force, in order to protecting
On the premise of demonstrate,proving other component measurement precision, improve the precision that little rolling moment method is measured as far as possible；Air-bearing supports
Make less rolling moment measure not disturbed by other big sharing parts of the load of reentry body model, and can will support the rolling friction of self
Damp the impact that rolling moment is measured and be reduced to 10-6Nm magnitude level.
2. in, balance body uses six component rod-type sky flat structures of central aeration, and axial force element uses tee girder knot
Structure, is arranged at balance centre of moment, and arranges support beams structure relative to balance centre of moment in tee girder structure both sides, its
His unit is less to the interference of axial force unit；The vent line at interior balance assembly center is provided with corrugated tube, in order to weaken pipeline pair
The adverse effect of balance axial force measuration sensitivity；Outer balance uses the spoke structure of hollow, rolling moment element design flow
Journey is less, devises antioverloading protection structure.
3. the interface position of air-bearing support means and reentry body model is in the postmedian of model, in process of the test
The temperature at this position of model rises relatively slow, and the measuring cell of the most inside and outside balance all the most directly connects with reentry body model
Touch, advantageously reduce the temperature effects of balance in process of the test.
The aerodynamics force measurement device that the most this air-bearing supports have simple in construction, volume compact, integral rigidity high,
Little rolling moment measures sensitive high, it is adaptable to the hypersonic wind tunnel of little asymmetric reentry body six component aerodynamics force measurement
Test.
In a word, the little asymmetric reentry body aerodynamics force measurement device that air-bearing of the present utility model supports, use inside and outside
The method of balance nesting combination measures six component aerodynamic force of little asymmetric reentry body, is ensureing other five component measurements precision
Under premise, sensitivity and the precision of little rolling moment component measurement can be greatly improved；There is simple in construction, volume compact, whole
Body rigidity high, it is adaptable to the hypersonic wind tunnel experiment of little asymmetric reentry body six component aerodynamics force measurement.Meanwhile, this
The little asymmetric reentry body aerodynamics force measurement device planting air-bearing support can be used in the wind-tunnel of other types aerodynamics force measurement
Test occasion, can be used particularly for various high-precision little rolling moment and measures wind tunnel test.
Accompanying drawing explanation
Fig. 1 is the little asymmetric reentry body aerodynamics force measurement device schematic diagram that air-bearing of the present utility model supports；
Fig. 2 is the air-bearing support means schematic diagram in this utility model device；
Fig. 3 is the interior balance component diagram in this utility model device；
Fig. 4 is the interior balance assembly A-A sectional view in this utility model device；
Fig. 5 is the interior balance assembly B-B sectional view in this utility model device；
Fig. 6 is the outer balance structural representation in this utility model device；
In figure, 1. support sting 2. air-bearing support means 3. model back segment 4. model leading portion 5. flat key 6.M6 band
In the pin positive and negative tightening nut of screw 7. 8., balance assembly 9. rear end cap 10. internal axle sleeve 11. outer shaft 12. floats outer shaft
13. drive end bearing bracket 14. outer balance 15. plain cushion 16. elastomeric pad 17. outer-hexagonal hook bolt 18. soket head cap screw 19.M5 bands
Pin screw 20. balance body 21. corrugated tube 22. breather 23. plug 24. internal ring 25. outer shroud 26.T type structure 27.
Rectangular column.
Detailed description of the invention
With embodiment, this utility model is described in detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of little asymmetric reentry body aerodynamics force measurement assay device, including support sting 1, air-bearing shafts
Hold support means 2, model back segment 3, model leading portion 4, flat key 5, M6 band pin screw 6, positive and negative tightening nut 7.Support sting 1 rear end with
In test chamber, model mechanism is fixing connects, and interior balance assembly 8 passes through with air-bearing support means 2 in support sting 1 front end
The 1:5 conical surface, flat key 5 and the fixing connection of positive and negative tightening nut 7；1:10 is used between air-bearing support means 2 and model back segment 3
The conical surface connects, and is positioned by M6 band pin screw 6, is fastened；Model back segment 3 is threadably secured with model leading portion 4 and is connected.
The interface position of air-bearing support means 2 and reentry body model is in the postmedian of model, process of the test middle mold
The temperature at this position of type rises relatively slow, especially in balance assembly 8 and radial balance 14 measuring cell all and model
It is not directly contacted with, advantageously reduces the temperature effects of balance.
Fig. 2 is the structural representation of air-bearing support means 2, including interior balance assembly 8, rear end cap 9, internal axle sleeve 10,
Outer shaft 11, floating outer shaft 12, drive end bearing bracket 13, outer balance 14, plain cushion 15, elastomeric pad 16, outer-hexagonal hook bolt 17, interior hexagonal
Screw 18 and M5 band pin screw 19.Internal axle sleeve 10 is fixed with the air-bearing of air loop with outer shaft 11 interference fit composition
Interior axle；The 1:5 conical surface is used to be connected, by outer-hexagonal hook bolt 17, elastomeric pad 16 and between interior balance assembly 8 and internal axle sleeve 10
Plain cushion 15 fastens；By outer-hexagonal hook bolt 17, elastomeric pad 16 peace between interior balance assembly 8 and the internal ring 24 of outer balance 14
Pad 15 connection fastening, it is ensured that connect reliable；Between outer shroud 25 and the floating outer shaft 12 of outer balance 14 by M5 band pin screw 19 in fact
Existing small-gap suture coordinates；Drive end bearing bracket 13, rear end cap 9 are connected by soket head cap screw 18 is fixing with outer shaft 11, floating outer shaft 12 and
Form air gap between drive end bearing bracket 13, rear end cap 9 and outer shaft 11, rolling friction between floating outer shaft 12 and outer shaft 11, can be realized
Damping is less than 10-4Relatively rotating of Nm magnitude；Produce less when relatively rotating between floating outer shaft 12 and outer shaft 11, logical
Crossing M5 band pin screw 19 drives the outer shroud 25 of outer balance 14 to produce rotation so that produce between internal ring 24 and the outer shroud 25 of outer balance 14
Change shape, by measuring deformation output, and i.e. available less rolling moment.
Understanding in conjunction with Fig. 1 and Fig. 2, in little asymmetric reentry body aerodynamics force measurement uses, balance assembly 8 is embedding with outer balance 14
The measuring method of set combination.Interior balance assembly 8 uses the rod-type six COMPONENT BALANCE assembly of central aeration, measures in addition to rolling moment
Other five components aerodynamic force, it is possible to ensure certainty of measurement；Outer balance 14 uses the spoke structure of hollow, measures rolling moment
Component；With rolling frictional damping less than 10 between interior balance assembly 8, outer balance 14-4The air-bearing support means 2 of Nm magnitude is even
Connect.This measuring method closed by discrete sky flat elements nested groups, according to measuring Load Characteristics and balance structure constraint, will
Different measurement components is distributed on interior balance assembly 8 and outer balance 14, it is possible to adequacy test requires, reduces difficulty of processing, especially
It is can to control other big sharing parts of the load to disturb the measurement of little rolling moment, improve and measure precision.
Air-bearing designs: little asymmetric reentry body aerodynamics force measurement flow tunnel testing device of the present utility model uses the most frequently
Numerous, run the time short, bearing life is not principal element；Bearing type selecting is played a decisive role by the size of rolling frictional damping,
The air-bearing selecting rolling frictional damping minimum supports.The frictional damping moment of air-bearing can be divided into radial friction moment and
Axial rub moment, its computational methods are as follows:
1. radial friction moment
Wherein: D is the sleeve diameter of air-bearing, D=80mm；For the effective face length of axle sleeve of air-bearing, L=
150mm；C is the axle mean gap with axle sleeve radial direction of air-bearing, c=0.015mm；When μ is 25 DEG C, the power of air glues
Degree,；For the angular velocity of air-bearing,。
2. axial rub moment
Wherein:For the design size in thrust bearing, being the mean gap between two thrust surfaces, μ is 25 DEG C
Time air dynamic viscosity,；For the angular velocity of air-bearing,。
3. total frictional force square
Air-bearing of the present utility model supports the rolling friction damping of self and meets design requirement.
Fig. 3 is the structural representation of interior balance assembly 8, Fig. 4,5 is the structure sectional view of interior balance assembly 8.Interior balance group
Part 8 includes balance body 20, corrugated tube 21, breather 22 and plug 23.Balance body 20 uses the rod-type six points of central aeration
Amount sky flat structure, a diameter of Ф 35mm, axial force element uses tee girder structure, is placed in balance centre of moment position, and relative to
Balance centre of moment arranges support beams in tee girder structure both sides.Use this axial force component structure, the spirit that axial force unit measures
Sensitivity is of a relatively high, and the interference that axial force unit is measured by other yuan is less, and temperature effects is relatively low；T-shaped by optimizing
Beam and support beam structure size, obtain bigger strain deformation ratio, improves integral rigidity.Additionally, for reduce support beam end with
The stress value of body connecting portion, changes the arrangement that conventional support beam is contour relative to balance axis, and uses staged
Arrangement, can reduce stress raisers, improve safety coefficient and integral rigidity；The QUOTE of interior balance assembly 8 、
QUOTE 、 QUOTE 、 QUOTE And QUOTE Component uses three post rectangular column typical case knots
Structure, is symmetrically arranged in axial force element two ends；Under conditions of ensureing balance integral rigidity, by optimizing three post fine strain of millet structure chis
Very little, increase the horizontal lateral QUOTE of balance as far as possible 、 QUOTE And QUOTE Component and QUOTE Strain signal output；Bore fitting surface before and after interior balance assembly 8 and in the middle of beam, changeover portion is set, to reduce dress with measuring
Join stress influence.
In interior balance assembly 8, corrugated tube 21 uses and the identical materials processing of balance body 20, and breather 22 uses rustless steel
Material, is ensured corrugated tube 21 intensity by Optimal Structure Designing, is reduced the shadow of internal balance assembly 8 axial force measuration sensitivity
Ring；Plug 23 uses Cu alloy material to process, and is used for preventing balance body 20 front end from leaking gas；Corrugated tube 21, breather 22 and stifled
23 are built in the through hole of balance body 20 hollow, with the partial ventilation loop that balance body 20 collectively constitutes air-bearing；
Between corrugated tube 21, breather 22 and balance body 20, connecting portion is both needed to use the measures such as welding or glue envelope, it is ensured that it is airtight
Property.
Fig. 6 is the structural representation of outer balance 14, uses the spoke structure of hollow, including internal ring 24, outer shroud 25, T-shaped
Structure 26 and rectangular column 27.Internal ring 24 is fixing end, coordinates the conical surface to be connected with interior balance assembly 8 by 1:5；Outer shroud 25 is diameter
The ring flange of Ф 70mm, forms small-gap suture with 4 M5 band pin screws 19 and coordinates, and M5 band pin screw 19 is fixing with floating outer shaft 12 even
Connect；The sensing element that T-type structure 26 is measured for rolling moment, by 4 uniform T-type structures 26 between internal ring 24 and outer shroud 25
Connect；Inside 4 uniform rectangular columns 27, the outer shrouds 25 being connected fixing with internal ring 24 between 4 uniform rectangular recess little
Gap coordinates, and constitutes the antioverloading protection structure of outer balance 14.
Produce less when relatively rotating, outside being driven by M5 band pin screw 19 between floating outer shaft 12 and outer shaft 11
The outer shroud 25 of balance 14 rotates so that the T-type structure 26 between internal ring 24 and outer shroud 25 is deformed, and is deformed by measurement
Output, i.e. available less rolling moment.When being subject to bigger rolling moment, produce between floating outer shaft 12 and outer shaft 11
Raw bigger relatively rotating, the rectangular recess that rectangular column 27 is corresponding with inside outer shroud 25 produces and touches, and external balance 14 is prevented
Overload protection.The upper and lower multi-disc girder construction of T-type structure 26 is mainly used as support beam so that it is can bear bigger normal load
With certain lateral load, and weaken as far as possible its roll freedom rigidity with meet roll sensitivity design requirement.It is computed
Analyzing, rolling moment element can meet 10-2Nm magnitude rolling moment measurement demand.
The aerodynamics force measurement device that this air-bearing supports, the measuring method using inside and outside balance nesting to combine realizes；
According to measuring loaded matching feature and balance structure constraint, different measurement components is distributed on inside and outside balance；Protecting
While demonstrate,proving other five components aerodynamics force measurement precision, it is possible to the measurement sensitivity of rolling moment component is greatly improved with accurate
Degree；Possess that simple in construction, volume be little, integral rigidity high, it is adaptable to little asymmetric reentry body six component aerodynamics force measurement
Hypersonic wind tunnel experiment.This aerodynamics force measurement device closed by discrete sky flat elements nested groups, it is possible to adequacy test is wanted
Ask, reduce difficulty of processing, especially can control other big sharing parts of the load and the measurement of little rolling moment be disturbed, improves and measure precisely
Degree, the hypersonic wind tunnel experiment that other little rolling moments are measured class is the most significant.
This utility model is not limited to above-mentioned detailed description of the invention, and person of ordinary skill in the field visualizes from above-mentioned
Sending out, without performing creative labour, done all conversion, within all falling within protection domain of the present utility model.
Claims (6)
1. the little asymmetric reentry body aerodynamics force measurement device that an air-bearing supports, it is characterised in that: described device includes
Support sting (1), air-bearing support means (2), model back segment (3), model leading portion (4), flat key (5), M6 band pin screw (6),
Positive and negative tightening nut (7) and interior balance assembly (8)；Support sting (1) rear end is fixing with model mechanism in test chamber to be connected, tail
Interior balance assembly (8) passes through the 1:5 conical surface, flat key (5) and positive and negative tension with air-bearing support means (2) in pole (1) front end
Nut (7) is fixing to be connected；Use the 1:10 conical surface to be connected between air-bearing support means (2) with model back segment (3), carried by M6
Pin screw (6) positions, fastens；Model back segment (3) is threadably secured with model leading portion (4) and is connected.
The little asymmetric reentry body aerodynamics force measurement device that a kind of air-bearing the most according to claim 1 supports, it is special
Levy and be: described air-bearing support means (2) is the critical piece of little asymmetric reentry body aerodynamics force measurement device, including
Interior balance assembly (8), rear end cap (9), internal axle sleeve (10), outer shaft (11), floating outer shaft (12), drive end bearing bracket (13), outer balance
(14), plain cushion (15), elastomeric pad (16), outer-hexagonal hook bolt (17), soket head cap screw (18) and M5 band pin screw (19)；In
Axle sleeve (10) and outer shaft (11) interference fit form the fixing interior axle with air loop；Interior balance assembly (8) and internal axle sleeve
(10) use the 1:5 conical surface to connect between, fastened by outer-hexagonal hook bolt (17), elastomeric pad (16) and plain cushion (15)；Interior sky
By outer-hexagonal hook bolt (17), elastomeric pad (16) and plain cushion between the internal ring (24) of flat assembly (8) and outer balance (14)
(15) fastening is connected, it is ensured that connect reliable；By M5 band pin spiral shell between outer shroud (25) and the floating outer shaft (12) of outer balance (14)
Nail (19) realizes small-gap suture and coordinates；Drive end bearing bracket (13), rear end cap (9) are fixing even by soket head cap screw (18) and outer shaft (11)
Connect, between floating outer shaft (12) and drive end bearing bracket (13), rear end cap (9) and outer shaft (11) formed air gap, floating outer shaft (12) with
Rolling frictional damping can be realized less than 10 between outer shaft (11)-4Relatively rotating of Nm magnitude；Floating outer shaft (12) and outer shaft
(11) produce less when relatively rotating between, drive the outer shroud (25) of outer balance (14) to produce turn by M5 band pin screw (19)
Dynamic to be deformed between internal ring (24) and the outer shroud (25) of outer balance (14), measure deformation output and i.e. can get rolling power
Square.
The little asymmetric reentry body aerodynamics force measurement device that a kind of air-bearing the most according to claim 1 supports, it is special
Levy and be: described air-bearing support means (2) and reentry body model link position are in the postmedian of model.
The little asymmetric reentry body aerodynamics force measurement device that a kind of air-bearing the most according to claim 1 supports, it is special
Levy and be: described interior balance assembly (8) includes balance body (20), corrugated tube (21), breather (22) and plug (23)；My god
Flat body (20) uses the rod-type six COMPONENT BALANCE structure of central aeration, a diameter of Ф 35mm, and axial force element uses tee girder knot
Structure, is placed in balance centre of moment position, and relative to balance centre of moment in tee girder structure both sides layout support beams；Interior balance
Assembly (8)、、 、WithComponent uses three post rectangular column typical structures to measure, and is symmetrically arranged in axial force element
Two ends, increase balance horizontal lateral as far as possible、、Component andThe strain signal output of component；Interior balance assembly (8)
Before and after bore fitting surface and measure between beam changeover portion is set, to reduce erection stress impact.
The little asymmetric reentry body aerodynamics force measurement device that a kind of air-bearing the most according to claim 1 supports, it is special
Levy and be: the corrugated tube (21) in described interior balance assembly (8) uses the materials processing identical with balance body (20), ventilation
Pipe (22) uses stainless steel material, is ensured the intensity of corrugated tube (21) by Optimal Structure Designing, is reduced internal balance assembly (8)
The impact of axial force measuration sensitivity；Plug (23) uses Cu alloy material processing, prevents balance body (20) front end from leaking gas；Ripple
Stricture of vagina pipe (21), breather (22) and plug (23) are built in the through hole of balance body (20) hollow, with balance body (20) altogether
With the partial ventilation loop forming air-bearing；Between corrugated tube (21), breather (22) and balance body (20), connecting portion
It is both needed to use welding or glue envelope measure.
The little asymmetric reentry body aerodynamics force measurement device that a kind of air-bearing the most according to claim 2 supports, it is special
Levy and be: described outer balance (14) uses the spoke structure of hollow, including internal ring (24), outer shroud (25), T-type structure (26)
With rectangular column (27)；Internal ring (24) is fixing end, coordinates the conical surface to be connected with interior balance assembly (8) by 1:5；Outer shroud (25) is straight
The ring flange of footpath Ф 70mm, coordinates with 4 M5 band pin screw (19) small-gap suture, and M5 band pin screw (19) is solid with floating outer shaft (12)
Fixed connection；T-type structure (26) is the sensing element that rolling moment is measured, uniform by 4 between internal ring (24) and outer shroud (25)
T-type structure (26) connect；Fixing with internal ring (24) is connected 4 uniform rectangular columns (27), 4 of outer shroud (25) inner side equal
Between the rectangular recess of cloth, small-gap suture coordinates, and constitutes the antioverloading protection structure of outer balance (14)；
Produce less when relatively rotating, by M5 band pin screw (19) between described floating outer shaft (12) and outer shaft (11)
The outer shroud (25) driving outer balance (14) rotates so that the T-type structure (26) between internal ring (24) and outer shroud (25) produces
Deformation, by measuring deformation output, i.e. available less rolling moment；When being subject to bigger rolling moment, floating outer shaft
(12) bigger relatively rotating, the rectangular recess that rectangular column (27) is corresponding with outer shroud (25) inner side and are produced between outer shaft (11)
Generation is touched, and external balance (14) carries out antioverloading protection.
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| CN201620422302.2U CN205748868U (en) | 2016-05-11 | 2016-05-11 | The little asymmetric reentry body aerodynamics force measurement device that a kind of air-bearing supports |
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| CN201620422302.2U CN205748868U (en) | 2016-05-11 | 2016-05-11 | The little asymmetric reentry body aerodynamics force measurement device that a kind of air-bearing supports |
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| CN105806586A (en) * | 2016-05-11 | 2016-07-27 | 中国空气动力研究与发展中心超高速空气动力研究所 | Small asymmetrical reentry body aerodynamic force measuring device supported by air bearing |
| CN107091726A (en) * | 2017-05-27 | 2017-08-25 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of device and method for improving balance measurement uncertainty |
| CN107290124A (en) * | 2017-06-26 | 2017-10-24 | 西南交通大学 | A kind of pulse-combustion wind-tunnel suspension type dynamometric system |
| CN108318217A (en) * | 2018-03-22 | 2018-07-24 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of six component multi-disc beam balances for hanger CTS experiments in parallel |
| CN108398228A (en) * | 2017-12-27 | 2018-08-14 | 中国航天空气动力技术研究院 | A kind of air-flotation type strain balance |
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2016
- 2016-05-11 CN CN201620422302.2U patent/CN205748868U/en not_active Withdrawn - After Issue
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| CN105806586B (en) * | 2016-05-11 | 2018-02-23 | 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 small asymmetric reentry body aerodynamics force measurement device of air-bearing support |
| CN105806586A (en) * | 2016-05-11 | 2016-07-27 | 中国空气动力研究与发展中心超高速空气动力研究所 | Small asymmetrical reentry body aerodynamic force measuring device supported by air bearing |
| CN107091726B (en) * | 2017-05-27 | 2023-06-23 | 中国空气动力研究与发展中心高速空气动力研究所 | Device and method for improving measurement uncertainty of balance |
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| CN107290124A (en) * | 2017-06-26 | 2017-10-24 | 西南交通大学 | A kind of pulse-combustion wind-tunnel suspension type dynamometric system |
| CN108398228A (en) * | 2017-12-27 | 2018-08-14 | 中国航天空气动力技术研究院 | A kind of air-flotation type strain balance |
| CN108398228B (en) * | 2017-12-27 | 2020-03-24 | 中国航天空气动力技术研究院 | Air-floating strain balance |
| CN108318217A (en) * | 2018-03-22 | 2018-07-24 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of six component multi-disc beam balances for hanger CTS experiments in parallel |
| CN108692912A (en) * | 2018-04-28 | 2018-10-23 | 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 double frictional resistance balance measurement methods of swimming cloths |
| CN111189609A (en) * | 2020-03-06 | 2020-05-22 | 中国空气动力研究与发展中心超高速空气动力研究所 | Single-component rod-shaped ring-shaped rolling torque balance for hypersonic wind tunnel |
| CN111189609B (en) * | 2020-03-06 | 2024-03-26 | 中国空气动力研究与发展中心超高速空气动力研究所 | Hypersonic wind tunnel single-component rod-shaped ring type rolling moment balance |
| CN117906903A (en) * | 2024-03-18 | 2024-04-19 | 中国空气动力研究与发展中心超高速空气动力研究所 | Micro aerodynamic resistance measuring device and use method thereof |
| CN117906903B (en) * | 2024-03-18 | 2024-05-17 | 中国空气动力研究与发展中心超高速空气动力研究所 | Micro aerodynamic resistance measuring device and use method thereof |
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