CN105973565B - Lateral jet system for wind-tunnel interference test - Google Patents
Lateral jet system for wind-tunnel interference test Download PDFInfo
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- CN105973565B CN105973565B CN201610498115.7A CN201610498115A CN105973565B CN 105973565 B CN105973565 B CN 105973565B CN 201610498115 A CN201610498115 A CN 201610498115A CN 105973565 B CN105973565 B CN 105973565B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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Abstract
The present invention relates to a kind of flow tunnel testing devices.It is more particularly related to a kind of lateral jet system for wind-tunnel interference test, which is placed in wind-tunnel, including：Strut, its inner horizontal is provided with high pressure draught channel, the import in high pressure draught channel is connected to feeder, the outlet end of strut is provided with the device for measuring force for measuring the test model force-bearing situation being placed in wind-tunnel, the non-through setting in outlet of device for measuring force and high pressure draught channel, and the diameter of the outlet end of strut is less than the diameter of input end；The exit in high pressure draught channel, the axial direction for being axially perpendicular to high pressure draught channel of jet pipe is arranged in jet pipe, and high pressure draught, which is sprayed through high pressure draught channel and jet pipe from strut side, acts on test model.The present invention provides one kind disclosure satisfy that model space requirement and jet pipe layout requirements, and carries out the lateral jet system that wind-tunnel interference test finely measures using typical load cell device.
Description
Technical field
The present invention relates to a kind of flow tunnel testing devices.It is more particularly related to which a kind of being used for wind-tunnel interference test
Lateral jet system.
Background technology
With the fast development of Global Aerospace cause, especially the continuous of space weapon model maneuverability requirement is carried
Height, it is more and more extensive as a kind of use of lateral thrust control of high maneuverability solution in weapon model, to right
Wind-tunnel lateral jet interference test proposes new requirement.The pervious weapon model lateral thrust control in China uses few,
Model few in number using lateral thrust control technology belongs to tactics, strategic arms more, and belongs to orbits controlling more (jet pipe exists
Aircraft center of mass, earlier).Since moulded dimension is larger, previous lateral jet experimental technique is in design specialized
Empty jet test balance, since balance is hollow, balance is relatively large in diameter, and is five components.Jet flow gas circuit is designed as individually
Vent line pass through near hollow balance to model jet flow position, gas circuit end connecting spray nozzle section is for simulating required side
Spray jet pipe.As China's weapon is gradually changed into autonomous innovation by tracking to copy, more and more models use Lateral jet mode,
And control mode include orbits controlling and gesture stability (jet pipe away from barycenter farther out, and rearward), type covers strategy, tactics and often
Weapon is advised, model slenderness ratio is very big, and internal free space is smaller and smaller, and pervious jet flow balance form size has been unsatisfactory for testing
Demand, while the requirement that aerodynamic data accurately measures is continuously improved in model demand, using six component force days of conventional high-precision
The flat jet test that carries out has become type design department first choice.
Invention content
It is an object of the invention to solve at least the above, and provide the advantages of at least will be described later.
It is a still further object of the present invention to provide one kind disclosure satisfy that model space requirement and jet pipe layout requirements, and utilizes
Typical load cell device carries out the lateral jet system that wind-tunnel interference test finely measures.
In order to realize object of the present invention and further advantage, a kind of lateral spray for wind-tunnel interference test is provided
Streaming system, the lateral jet system are placed in the wind-tunnel, including：
Strut, inner horizontal are provided with high pressure draught channel, and the import in the high pressure draught channel is connected to gas supply dress
It sets, the outlet end of the strut is provided with the device for measuring force for measuring the test model force-bearing situation being placed in wind-tunnel, described
The non-through setting in outlet of device for measuring force and the high pressure draught channel, and the diameter of the outlet end of the strut is less than input end
Diameter；
Jet pipe, is arranged the exit in the high pressure draught channel, and the jet pipe is axially perpendicular to the high pressure gas
The axial direction of circulation road, high pressure draught, which is sprayed through the high pressure draught channel and jet pipe from the strut side, acts on the experiment
Model.
Preferably, in the lateral jet system for wind-tunnel interference test, the strut includes cooperating
The strut nozzle section and strut back segment of connection, model nozzle section is set in the outlet side of the strut nozzle section, and jet pipe is placed in
The pre-position of model nozzle section, test model are connected to the outlet end of model nozzle section, and the import of the strut back segment is logical
A snorkel is crossed to connect with the feeder.
Preferably, in the lateral jet system for wind-tunnel interference test, the strut nozzle section include according to
The straight sections such as the strut of secondary connection, strut changeover portion and strut coordinate section, the strut changeover portion to be set as passing through
Diameter gradually increase, wherein the smaller one end of the strut changeover portion diameter is connect with straight sections such as the struts, the strut
The other end that changeover portion is relatively large in diameter is connect with the strut depending post.
Preferably, in the lateral jet system for wind-tunnel interference test, the strut changeover portion diameter compared with
The big other end forms a necking, and the diameter of the necking is consistent with the strut cooperation diameter of section.
Preferably, in the lateral jet system for wind-tunnel interference test, one end of the strut back segment has
There is a gap, the strut back segment is set in the inlet side of the strut nozzle section by the gap, so that the strut
Nozzle section and strut back segment form streamline structure.
Preferably, in the lateral jet system for wind-tunnel interference test, the device for measuring force is arranged in institute
It states in model nozzle section, the device for measuring force and the outlet side of the strut nozzle section and the outlet side of the model nozzle section
Fixed by boring cooperation.
Preferably, in the lateral jet system for wind-tunnel interference test, the outlet of the strut nozzle section
Side offers a cone slot, and one end of the device for measuring force is mounted in the cone slot, with the outlet side with the strut nozzle section
Form cone cooperation.
Preferably, in the lateral jet system for wind-tunnel interference test, the jet pipe is internally provided with spray
The outlet of pipe venturi, the nozzle throat is set as wedge shape, and big opening end is located at outside.
Preferably, in the lateral jet system for wind-tunnel interference test, the jet pipe can be one or
Two, two jet pipes are arranged in parallel in the same side or both sides of the strut.
Preferably, in the lateral jet system for wind-tunnel interference test, the jet pipe and the strut one
Body formed setting.
The present invention includes at least following advantageous effect：Jet pipe is set in the outlet sides of strut so that high pressure draught is through branch
High pressure draught channel and jet pipe inside bar, which are directly sprayed from strut side, carries out wind-tunnel interference test, without passing through strut
The device for measuring force of outlet end, system occupy little space, and conventional device for measuring force can be utilized to complete experiment, meet the model space
It is required that and jet pipe layout requirements.And due to the non-through setting in outlet of device for measuring force and high pressure draught channel, gas circuit is to surveying
For power apparatus without influence, dynamometry precision is high.Jet pipe can be processed according to test requirements document, design, and readily replaceable, system dress
Match, model it is easy for installation, to realize the lateral jet interference test of different form jet pipe.
Part is illustrated to embody by further advantage, target and the feature of the present invention by following, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Description of the drawings
Fig. 1 is the schematic diagram of the lateral jet system for wind-tunnel interference test of the present invention；
Fig. 2 is the sectional view of the strut nozzle section of the present invention；
Fig. 3 is the sectional view one of the jet pipe of the present invention；
Fig. 4 is the sectional view two of the jet pipe of the present invention；
Fig. 5 is the sectional view three of the jet pipe of the present invention；
Fig. 6 is the sectional view four of the jet pipe of the present invention.
Specific implementation mode
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art with reference to specification text
Word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of a other elements or combinations thereof.
As depicted in figs. 1 and 2, the present invention provides a kind of lateral jet system for wind-tunnel interference test, the lateral spray
Streaming system is placed in the wind-tunnel, and outlet end mentioned in the present invention refers both to one end to keep left that each component is located in diagram, into
Mouth end refers both to one end kept right that each component is located in diagram, including：
Strut 1, inner horizontal are provided with high pressure draught channel 13, and high pressure draught channel is formed by strut inner hollow,
The import in the high pressure draught channel is connected to feeder, and the outlet end of the strut, which is provided with, to be placed in for measuring in wind-tunnel
Test model force-bearing situation device for measuring force 2, device for measuring force is generally force balance, the device for measuring force and the high pressure gas
There is a certain distance the non-through setting in outlet of circulation road, the i.e. front end of high pressure draught channel distance strut, section setting
For entity shape, and the diameter of the outlet end of the strut is less than the diameter of input end, this primarily to meet jet pipe flow and
The requirement of speed, because the maximum speed in high pressure draught channel only appears at cross-sectional area minimum, in order to meet
The rate request of nozzle exit, it is necessary to assure the diameter of the outlet end of strut is less than the diameter of input end.
Jet pipe 3, is arranged the exit in the high pressure draught channel, and the jet pipe is axially perpendicular to the high pressure gas
The axial direction of circulation road, high pressure draught, which is sprayed through the high pressure draught channel and jet pipe from the strut side, acts on the experiment
Model, the i.e. flow path of high pressure draught are broken line.
In the lateral jet system for wind-tunnel interference test, the strut includes the strut connected that cooperates
Nozzle section 11 and strut back segment 12, strut nozzle section and strut back segment pass through at least one pin hole 111 for being disposed there between
It is fixed with the pin 121 in pin hole.Model nozzle section 4 is set in the outlet side of the strut nozzle section, and jet pipe is set
In the pre-position of model nozzle section, test model is connected to the outlet end of model nozzle section, and model nozzle section is sprayed with strut
After pipeline section installation, jet pipe on strut and model nozzle section with being combined into jet band, high pressure draught directly after jet pipe ejection with
The interaction of wind-tunnel incoming sprays to test model surface.The import of the strut back segment is filled by a snorkel 5 with the gas supply
Connection is set, the both ends of snorkel are separately installed with gas circuit front connector 51 and gas circuit rear joint 52, and snorkel passes through gas circuit front connector
Connect with the input end of strut back segment, snorkel is connected by the outlet of gas circuit rear joint and feeder, gas circuit front connector and
Gas circuit rear joint is fixed by a nut (511,521) with snorkel respectively.
In the lateral jet system for wind-tunnel interference test, the strut nozzle section includes sequentially connected branch
The straight sections such as bar 112, strut changeover portion 113 and strut coordinate section 114, this section of straight sections such as strut, that is, strut passes through
Diameter does not change, and is consistent, and is a cylinder；The diameter that the strut changeover portion is set as passing through gradually increases
Greatly, wherein the smaller one end of the strut changeover portion diameter is connect with straight sections such as the struts, the strut changeover portion diameter compared with
The big other end is connect with strut cooperation section.Strut back segment coordinates section to be connect with wind-tunnel holder by strut, and tail ring is used in combination
122 tense.The straight sections such as strut, strut changeover portion and strut cooperation section three can be integrally machined molding setting, can also distinguish
Processing is reconnected and is fixed.Strut nozzle section by the straight sections such as strut ensure strut lengths requirement, by strut changeover portion complete with
The diameter transition of strut back segment generates cylinder with strut back segment using strut cooperation section and coordinates.Strut is for connection to experiment mould
Type, strut changeover portion has an impact test model base pressure, aerodynamically test specification, and strut stretches out examination
The part for testing model tail portion must be provided with the straight sections such as strut, and the length of the straight sections such as strut must with test model bottom equivalent diameter
Certain ratio must be met.
In the lateral jet system for wind-tunnel interference test, the other end that the strut changeover portion is relatively large in diameter
A necking is formed, the diameter of the necking is consistent with the strut cooperation diameter of section, i.e. the input end of strut nozzle section is formed
One horizontal positioned " convex " font.
In the lateral jet system for wind-tunnel interference test, one end of the strut back segment has a gap
123, which is a horizontal positioned U shape, and the strut back segment is set in the strut nozzle section by the gap
Inlet side so that the strut nozzle section and strut back segment form streamline structure.Streamlined structure is to test model
Rectified action is played in tail portion flow field, is avoided air-flow from being interfered and is generated the flow field being affected to test model tail portion, to
Influence force measurements.In the U shape gap of " convex " the font input end of strut nozzle section and strut back segment in the present embodiment
Corresponding position is each provided with two pin holes, is equipped with a pin in each pin hole, the two is fixed.In addition, in strut back segment
It is additionally provided with a positioning ring 124, positioning ring is fixed by pin and strut back segment, is existed by positioning ring micro-adjustment jet pipe
Position in Flow Field in Wind Tunnel.Jet test is needed to carry out schlieren shooting to spout area, to observe spout area flow knot
Structure.Since test section optical observation window position is fixed, it is therefore desirable to be finely adjusted in the position of test section to jet pipe, regulative mode
It is connect with wind-tunnel holder for strut back segment, wind-tunnel holder front end is positioned by positioning ring and the cooperation of strut end face, passes through change
The width of positioning ring is the front and back position of adjustable strut, and since strut is connect with jet pipe, the position of jet pipe can also be sent out
It is raw to change.
In the lateral jet system for wind-tunnel interference test, the device for measuring force is arranged in the model jet pipe
Duan Zhong, the device for measuring force are matched by cone with the outlet side of the strut nozzle section and the outlet side of the model nozzle section
It closes and fixes.Model nozzle section is connect by the blind rivet 6, gasket 7 and tapered sleeve 8 set gradually with device for measuring force inner cone, device for measuring force
Cone is connect by voussoir 9 with strut nozzle section afterwards.
In the lateral jet system for wind-tunnel interference test, the outlet side of the strut nozzle section offers one
Slot 115 is bored, one end of the device for measuring force is mounted in the cone slot, is matched to form cone with the outlet side of the strut nozzle section
It closes.It bores and offers keyway 1151 and wedge slot 1152 on the conical surface of slot, voussoir is mounted in wedge slot, ensures positioning accurate by keyway
Degree, and device for measuring force and strut nozzle section are further fastened by wedge slot and voussoir.
In the lateral jet system for wind-tunnel interference test, the jet pipe is internally provided with nozzle throat 31,
The outlet 32 of the nozzle throat is set as wedge shape, and big opening end is located at outside.The periphery of nozzle throat is jet pipe wall 33, by
Jet pipe wall simulates jet pipe outer diameter, controls gas jet muzzle velocity and angle by nozzle throat and the wedge shape of outlet, is formed
Gas jet speed is simulated or momentum simulation.
In the lateral jet system for wind-tunnel interference test, as illustrated in figures 3-6, the jet pipe can be one
A or two, two jet pipes are arranged in parallel in the same side or both sides of the strut.Wherein, Fig. 3 is the double spray jet pipes in side, and Fig. 4 is
Single positive spray jet pipe, Fig. 5 are just double spray jet pipes, and Fig. 6 is unilateral spray jet pipe, be can be realized by replacing the strut nozzle section with jet pipe
The lateral jet interference test of different form jet pipe.
In the lateral jet system for wind-tunnel interference test, the jet pipe is set with strut integrated molding
It sets, reduces the use of connector.
Typical load cell balance connect with strut nozzle section, is used in combination in assembly by the lateral jet system of the present invention first
Voussoir fixation is integral, then connect strut nozzle section with strut back segment by mating surface, pin is used in combination to fix.Later again
Coordinate section to be connect with wind-tunnel holder by strut back segment and strut, jet pipe is adjusted in high pressure draught channel flow field by positioning ring
In position, use tail ring to tense strut and wind-tunnel holder later.Finally test model is connected with required posture and strut nozzle section
It connects, blind rivet is used in combination to tense, the novel lateral jet system for wind-tunnel interference test is completed after strut back segment connection snorkel
Assembly.The system is tested for lateral jet wind-tunnel interference force measurement, and jet pipe is not in contact with test model, therefore due to jet flow
Direct jet flow power caused by momentum will not act on test model, but the lateral jet and wind-tunnel incoming that are sprayed from jet pipe are mutual
After effect, the fluidised form of the Inlet-air Velocity Distribution near jet pipe can be changed, the flow field of different fluidised forms can cause test model surface pressing
Change, to change the aerodynamic force suffered by test model.To no jet flow state and there is jet flow condition test model in experiment
Force-bearing situation measures respectively, under identical test state, has jet flow state and force balance is measured when without jet flow state examination
It is Jet enterference value to test model stress difference.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (9)
1. a kind of lateral jet system for wind-tunnel interference test, which is placed in the wind-tunnel, feature
It is, including：
Strut, inner horizontal are provided with high pressure draught channel, and the import in the high pressure draught channel is connected to feeder, institute
The outlet end for stating strut is provided with device for measuring force for measuring the test model force-bearing situation being placed in wind-tunnel, the dynamometry dress
The non-through setting in outlet with the high pressure draught channel is set, and the diameter of the outlet end of the strut is less than the straight of input end
Diameter；
Jet pipe, is arranged the exit in the high pressure draught channel, and the jet pipe is axially perpendicular to the high pressure gas circulation
The axial direction in road, high pressure draught, which is sprayed through the high pressure draught channel and jet pipe from the strut side, acts on the experiment mould
Type；
The jet pipe is integrally formed with the strut to be arranged.
2. being used for the lateral jet system of wind-tunnel interference test as described in claim 1, which is characterized in that the strut includes
The strut nozzle section and strut back segment, model nozzle section of mutual cooperation connection are set in the outlet side of the strut nozzle section, and
Jet pipe is placed in the pre-position of model nozzle section, and test model is connected to the outlet end of model nozzle section, the strut back segment
Import connect with the feeder by a snorkel.
3. being used for the lateral jet system of wind-tunnel interference test as claimed in claim 2, which is characterized in that the strut jet pipe
Section includes that the straight sections such as sequentially connected strut, strut changeover portion and strut coordinate section, the strut changeover portion to be set as from one end
Diameter to the other end gradually increases, wherein and the smaller one end of the strut changeover portion diameter is connect with straight sections such as the struts,
The other end that the strut changeover portion is relatively large in diameter is connect with the strut depending post.
4. being used for the lateral jet system of wind-tunnel interference test as claimed in claim 3, which is characterized in that the strut transition
The other end that section is relatively large in diameter forms a necking, and the diameter of the necking is consistent with the strut cooperation diameter of section.
5. being used for the lateral jet system of wind-tunnel interference test as claimed in claim 2, which is characterized in that the strut back segment
One end there is a gap, the strut back segment is set in the inlet side of the strut nozzle section by the gap so that
The strut nozzle section and strut back segment form streamline structure.
6. being used for the lateral jet system of wind-tunnel interference test as claimed in claim 2, which is characterized in that the device for measuring force
It is arranged in the model nozzle section, outlet side and the model nozzle section of the device for measuring force with the strut nozzle section
Outlet side pass through bore cooperation fix.
7. being used for the lateral jet system of wind-tunnel interference test as claimed in claim 6, which is characterized in that the strut jet pipe
The outlet side of section offers a cone slot, and one end of the device for measuring force is mounted in the cone slot, with the strut nozzle section
Outlet side formed cone cooperation.
8. being used for the lateral jet system of wind-tunnel interference test as described in claim 1, which is characterized in that inside the jet pipe
It is provided with nozzle throat, the outlet of the nozzle throat is set as wedge shape, and big opening end is located at outside.
9. being used for the lateral jet system of wind-tunnel interference test as described in claim 1, which is characterized in that the jet pipe can be with
For one or two, two jet pipes are arranged in parallel in the same side or both sides of the strut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610498115.7A CN105973565B (en) | 2016-06-29 | 2016-06-29 | Lateral jet system for wind-tunnel interference test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610498115.7A CN105973565B (en) | 2016-06-29 | 2016-06-29 | Lateral jet system for wind-tunnel interference test |
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| CN105973565A CN105973565A (en) | 2016-09-28 |
| CN105973565B true CN105973565B (en) | 2018-08-07 |
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| CN201610498115.7A Active CN105973565B (en) | 2016-06-29 | 2016-06-29 | Lateral jet system for wind-tunnel interference test |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768798B (en) * | 2016-11-28 | 2019-03-12 | 中国航天空气动力技术研究院 | One kind being used for big angle of attack rear lateral jet flow dynamometer check structure |
| CN109029904B (en) * | 2017-06-12 | 2023-08-15 | 中国空气动力研究与发展中心超高速空气动力研究所 | Be used for hypersonic speed wind tunnel head body separation jet interference test device |
| CN108181077B (en) * | 2017-12-15 | 2020-01-21 | 浙江大学 | Double-fluid jet device capable of changing inflow state |
| CN108387357A (en) * | 2017-12-29 | 2018-08-10 | 中国航天空气动力技术研究院 | A kind of device for the lateral jet test in bottom |
| CN108254155B (en) * | 2017-12-29 | 2020-06-09 | 中国航天空气动力技术研究院 | Rail-controlled lateral jet flow force measurement test structure for large slenderness ratio |
| CN108088649B (en) * | 2018-01-22 | 2023-07-18 | 中国空气动力研究与发展中心超高速空气动力研究所 | Model device for fixedly connecting spray pipe with shape in wind tunnel test and test method |
| CN109632253B (en) * | 2018-12-10 | 2021-02-09 | 中国航天空气动力技术研究院 | Model device for rotary body jet flow force measurement test |
| CN109765031A (en) * | 2019-03-12 | 2019-05-17 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of balance strut for wind-tunnel hot exhaust interference test |
| CN110426175A (en) * | 2019-06-14 | 2019-11-08 | 北京空天技术研究所 | Ventilating model device for measuring force under free jet tunnel experimental condition |
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| CN105973565A (en) | 2016-09-28 |
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