CN207779665U - The model equipment that jet pipe is connected with shape in wind tunnel test - Google Patents
The model equipment that jet pipe is connected with shape in wind tunnel test Download PDFInfo
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- CN207779665U CN207779665U CN201820103106.8U CN201820103106U CN207779665U CN 207779665 U CN207779665 U CN 207779665U CN 201820103106 U CN201820103106 U CN 201820103106U CN 207779665 U CN207779665 U CN 207779665U
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Abstract
The utility model discloses the model equipments that jet pipe in a kind of wind tunnel test and shape are connected, including：Dummy head, die body, top cover board, internal air supply system, balance, balance attaching nut, nozzle section, support sting composition.The model equipment being connected using jet pipe and shape, realize the installation of the gentle jet pipe in day, in the smaller model space, the requirement of the lower supply air line of arrangement, the model equipment being connected with shape using jet pipe in the wind tunnel test of the utility model is tested, measurement method is provided for small size, low thrust jet flow, avoids interference of the air supply system to aerodynamics force measurement；The perturbed force of measurement model aerodynamic force, jet flow thrust and jet flow and incoming tells the value of jet flow and free stream disturbance power finally by technological means again.The utility model has excellent basis meaning to the jet flow research of hypersonic aircraft, can solve the contradictory problems of the DATA REASONING and modelling encountered in much testing, has far-reaching ground application prospect.
Description
Technical field
The utility model is related to the model equipments that jet pipe in a kind of wind tunnel test and shape are connected, and belong to wind-tunnel technique
Field.
Background technology
Lateral thrust control, because it is applicable in, spatial domain is big, speed domain is big, can have a wide range of application and be used for attitude of flight vehicle and rail
In road control.Wind tunnel test is the important channel studied lateral thrust control and influenced.It is to avoid air supply system in wind tunnel test
Interference to dynamometric system is needed between jet pipe and model there are enough gaps, general to choose 0.5mm width, according to model
Processing, installation situation gap may also need to increase, to ensure that jet pipe will not be interfered with model.
But the area that Jet enterference acts on model is fixed, and the gap of 0.5mm wide inherently influences the effect of jet flow
Area reduces the Jet enterference power that can be measured, and influences to test accuracy.When nozzle throat is more than 1mm, this influence is smaller,
It can disregard；And when nozzle throat be less than 1mm when, area of the sedimentation exhalation on model should retain as possible, then jet pipe will with it is outer
Seamless connection or direct overall processing between shape；A part of the jet pipe as model, the thrust generated and perturbed force while quilt
Balance measurement.
When jet pipe and shape are processed as a whole, the air supply system of jet pipe will have a direct impact on balance survey because of Hard link
Power, and air source itself comes from the external world, it is practical that extraneous perturbed force is also brought to model.The emphasis of the utility model is to provide one
The model equipment that kind jet pipe is connected with shape, it is ensured that jet pipe is connected with model but jet pipe does not have an impact dynamometry simultaneously；
Secondly the device can slow down influence of the air supply system to aerodynamics force measurement, and when wind tunnel test reaches accurate and measures Jet enterference power
Purpose.
For the application range of the utility model mainly in wind tunnel experiment model, size small (venturi is less than 1mm), thrust are small
Jet pipe, measure the perturbed force and torque that it brings.When jet pipe size is larger, thrust may be with the aerodynamic force of model same
In one magnitude, if using the modelling mode, balance needs aerodynamic force, jet flow thrust and the Jet enterference of measurement model simultaneously
Power, the latter is generally than the above two small one to two orders of magnitude, therefore balance is difficult accurately to capture, and experiment precision is not guaranteed.
So the utility model is used mainly for small nozzle.
Utility model content
One purpose of the utility model is to solve at least the above and/or defect, and provide and at least will be described later
The advantages of.
In order to realize these purposes and other advantages according to the present utility model, provide in a kind of wind tunnel test jet pipe with
The connected model equipment of shape, including：
The cylindrical cavity for being useful for link model main body is arranged inside in dummy head；
Die body, one end are cylindrical structure, and platform is provided on the upside of the cylindrical structure；The cylinder
The stepped cylinder cavity of structure being internally provided with for fixed weigher；It is symmetrically set in the front and rear sides of the cylindrical structure
It is equipped with ladder cavity；The middle pars infrasegmentalis of the die body is model reserved area, and inside has etched-off area I；The model master
The other end of body is jet pipe reserved area, and the jet pipe reserved area is internally provided with two rectangular channels；
Top cover board coordinates with the model reserved area of die body with composition model stage casing, and the top cover board has
Etched-off area II；The etched-off area I and etched-off area II form the space for accommodating balance；
Balance, internal have a vent line, one end of the balance connect with collet after mounted on the model master
In the stepped cylinder cavity of body, the other end is connect with support sting；
Internal air supply system comprising one end of U-shaped ventilation elbow, the U-shaped ventilation elbow passes through connecting tube and balance
Outlet side connection, the other end is connected to by connecting tube with one end of copper tube；
Nozzle section matches setting with the jet pipe reserved area, and the nozzle section is internally provided in room；The jet pipe
Ventilation connection entrance is provided on one end of section；One end of the ventilation connection entrance and the other end of copper tube pass through connecting tube
Connection；The other end of the ventilation connection entrance is connected to in room；The other end of the nozzle section is provided with and stays what room was connected to
Multiple stepped cylinder channels；The multiple jet pipes being connected to multiple stepped cylinder channels are provided on the nozzle section；Wherein,
Ventilation plug component and stuffiness plug component is used to be detachably connected in different stepped cylinder channels to realize to phase
Answer the gas supply of jet pipe；
Support sting, it is internal there is ventilation pipe, it is provided on the downside of the support sting and is accessed for wind-tunnel high-pressure air source
The ventilation pipe outlet of vent entrance openings, the support sting is connected to the other end of balance；It is provided on the outside of the support sting recessed
Slot.
Preferably, the dummy head is positioned with die body by pin, screw lock；The cylindrical structure
It is provided on one side end face for installing three threaded holes for moving back balance unit.
Preferably, it is connected by copper tube adapter between the connecting tube and copper tube.
Preferably, the connection type between the balance and support sting is：It is provided on the outside of one end of the balance
Screw thread is provided with left-hand thread on the outside of one end of support sting, is connected by balance attaching nut and tight balance and support sting.
Preferably, in multiple stepped cylinder channels, the cylindrical channel of diameter minimum is connected in room；In diameter
Deng cylindrical channel be connected with jet pipe；The maximum cylindrical channel of diameter is connected with model tail portion.
Preferably, the copper tube is substituted using hose.
The utility model includes at least following advantageous effect：
(1) model equipment for using jet pipe and shape to be connected, having developed one kind, can to obtain small size, low thrust jet flow dry
The experimental technique of power is disturbed, which overcomes influence of the air supply system to dynamometric system, is obtained for the first time when jet pipe is connected with shape
Whole six component flight force and moment values were obtained, is tested using the device, obtains the interference force data of jet flow and incoming,
There is excellent basis meaning to the jet flow research of hypersonic aircraft, the DATA REASONING encountered in much testing can be solved
With the contradictory problems of modelling, there is far-reaching ground application prospect.
Part is illustrated to embody by the further advantage, target and feature of the utility model by following, and part will also pass through
Research and practice to the utility model and be understood by the person skilled in the art.
Description of the drawings：
Fig. 1 is model equipment scheme of installation；
Fig. 2 is dummy head sectional view；
Fig. 3 is die body stage casing isometric views；
Fig. 4 is die body stage casing top view；
Fig. 5 is die body stage casing front view；
Fig. 6 is die body stage casing sectional view；
Fig. 7 is die body stage casing left view；
Fig. 8 is top cover board front view；
Fig. 9 is top cover board left view；
Figure 10 is U-shaped ventilation elbow axonometric drawing；
Figure 11 is that sectional view is regarded on U-shaped ventilation elbow；
Figure 12 is balance schematic diagram；
Figure 13 is balance diagrammatic cross-section；
Figure 14 is internal air supply system schematic diagram；
Figure 15 is connecting tube sectional view；
Figure 16 is copper tube adapter sectional view；
Figure 17 is balance attaching nut's schematic diagram；
Figure 18 is balance attaching nut's sectional view；
Figure 19 is nozzle section schematic diagram；
Figure 20 is nozzle section rearview；
Figure 21 is Figure 20 nozzle section A-A sectional views；
Figure 22 is nozzle section right view；
Figure 23 is Figure 22 nozzle section B-B sectional views；
Figure 24 is nozzle section scheme of installation；
Figure 25 is support sting schematic diagram；
Figure 26 is support sting sectional view.
Specific implementation mode：
The following describes the utility model in further detail with reference to the accompanying drawings, to enable those skilled in the art with reference to explanation
Book 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.
The utility model provides the model equipment of jet pipe and shape overall processing in a kind of wind tunnel test, while providing one kind
The test method of the model that is connected can be directed to.Using this model equipment and test method, consolidating for jet pipe and model can be realized
Even install, i.e., jet pipe can directly be processed into a part for mode shape, avoid the influence to balance measurement, reach small size,
The purpose that low thrust jet pipe Jet enterference accurately measures.Involved aircraft shape is carried out briefly with round end bipyramid in patent
Signal.
Fig. 1 shows the model equipment that jet pipe is connected with shape in a kind of wind tunnel test, including：Dummy head 1, model master
Body 2, top cover board 3, internal air supply system, balance 8, balance attaching nut 9, nozzle section 10, support sting 11 form；
Wherein, as shown in Fig. 2, the dummy head 1, i.e. one section of the front end of model, are located on front side of balance, do not influence balance
Installation；There is a cylindrical cavity 1-3 in inside；Dummy head 1 is connect with die body 2 by cylindrical cavity 1-3, pin
Positioning, screw lock.Dummy head 1 empties loss of weight as possible in the case where ensureing shape and intensity, and material is generally selected
30CrMnSia, modulation, forging；
As shown in figure 3 to figure 7, the die body 2 is covered from dummy head junction until the big portion of model tail portion
Exceptionally shape；One end of the die body and dummy head junction is cylindrical structure 2-5, the cylindrical structure 2-5's
Upside is provided with platform 2-1, to adjust model balance；The cylindrical structure 2-5's is internally provided with for fixed weigher
Stepped cylinder cavity 2-7, wherein the smaller cylindrical cavity of diameter be used for limit balance process, tight balance；It is relatively large in diameter
Cylindrical cavity be used for be connected with collet, then with day flushconnection；In the front and rear sides of the cylindrical structure, symmetrical position
It sets, is each provided with a ladder cavity 2-6, ladder cavity 2-6 does not destroy cylindrical shape；Side is the gas supply for jet pipe
Pipeline can pass through, and the other side is for balance model quality；The middle pars infrasegmentalis of the die body 2 remains mode shape,
For model reserved area 2-3, top is platform, is connected with top cover board, in the case where ensuring intensity, is emptied as possible, formation is drawn
I 2-2 of empty region；A part of jet pipe and shape, i.e. jet pipe reserved area 2-4 are remained on the right side of die body, it is internal to have up and down
Two rectangular channels facilitate nozzle section to be inserted on the right side of die body, and are positioned from upper and lower both sides pin, screw lock, model master
Body material 2 generally selects 7074, forging.
Such as Fig. 8~9, the top cover board 3 is the upper area of model, is coordinated with complete model stage casing with die body 2
Shape, after dismounting, more operating spaces can be provided when installing model.Top cover board 3 is in the feelings for ensureing shape and intensity
It under condition, empties as possible, forms etched-off area 3-1；The threaded hole being connect with die body 2, top cover board are set on the cover board of top
Material generally selects 7074, forging；Wherein, the etched-off area I and etched-off area II form the space for accommodating balance；
As shown in Figure 12~13, the balance 8 is the adapter of link model main body and support sting, pneumatic for model
The measurement of power.8 inside of balance has vent line 8-2 to ventilate, and inlet end 8-3 is two-section cylinder, the smaller circle of diameter
Column is longer, will coordinate with support sting, is sealed to inlet end 8-3；Screw thread is set on the cylinder being relatively large in diameter, passes through with support sting and connect
Bolt is fixed.Balance outlet side 8-1 is equipped with a connection piece, is connect with connecting tube, achievees the purpose that air-flow exports.Balance material is selected
Use F141；
Such as Figure 10~11, shown in 14~16, the internal air supply system is inside model for the pipeline system of jet pipe gas supply
System, is made of U-shaped ventilation elbow 4, connecting tube 5, copper tube adapter 6, copper tube 7, washer 12.U-shaped ventilation elbow 4 is that have two
The inside air supply system at a turning, it is internal to have venting channels 4-1, i.e., U-shaped ventilation curved for balance 8 and the copper tube 7 of connecting
One end of head is connected to by connecting tube 5 with the outlet side of balance, and the other end is connected to by connecting tube with one end of copper tube, is reached
Change the purpose of airflow direction.The both ends of connecting tube 5 set positive/negative thread, and this screw thread can ensure the directionality of connected part,
Connecting tube is internally provided with venting channels 5-1；There is screw thread 6-1, the other end to be welded for copper tube for one end of copper tube adapter 6
Binding structure 6-2；Copper tube is welded on copper tube adapter 6, is used for transferring high voltage gas.Connecting tube, ventilation elbow and red copper
The material selection 30CrMnSia of pipe adapter, quenched, forging, the material selection red copper of copper tube, annealing；In the present invention, when
When experiment needs to carry out at relatively high temperatures, vent line uses copper tube.
As shown in Figure 19~24, the nozzle section 10, which is model, needs nozzle position region to be tested, from model
Tail portion is inserted into, and setting is matched with the jet pipe reserved area, and locked by upper and lower pin positioning, screw with die body 2
Tightly.There is shared 10-4 in room inside nozzle section 10, provides pressure identical stagnation pressure for each jet pipe 10-2, the one of the nozzle section
Ventilation connection entrance 10-1 is provided on end；One end of the ventilation connection entrance and the other end of copper tube 7 pass through connecting tube
Connection；The other end of the ventilation connection entrance 10-1 is connected to 10-4 in room；The other end of the nozzle section 10 be provided with
Multiple stepped cylinder channel 10-3 of connection in room；It is provided on the nozzle section and is connected to multiple stepped cylinder channels
Multiple jet pipe 10-2；Wherein, different step type circles is detachably connected on using ventilation plug component and stuffiness plug component
The gas supply to corresponding jet pipe is realized in column channel；That is stepped cylinder channel 10- is equipped between 10-4 in room and jet pipe 10-2
3, wherein the cylindrical cavity of diameter minimum is connected in room, is responsible for the input of air source；The medium cylindrical cavity of diameter and jet pipe phase
Even, it is responsible for steady air flow and is supplied for jet pipe；The maximum cylindrical cavity of diameter is connected with model tail portion, is responsible for sealing.Work as needs
When jet pipe 10-2 work, minimum cylindrical cavity ventilation is kept, maximum circle is blocked using ventilation plug 15 and ventilation washer 16
Column cavity can be then that corresponding jet pipe supplies；When not needing jet pipe work, using stuffiness plug 13 and obstructed air cushion
Circle 14 blocks minimum cylindrical cavity, reaches airproof purpose.Nozzle section material generally selects 30CrMnSia, quenched, forging
Part；Ventilation plug and stuffiness plug generally select 45# steel；Ventilation washer and obstructed airfilled ring generally select red copper, annealed
Processing.
As shown in Figure 25~26, the support sting 11 is the support device of model, while accessing high-pressure air source and being supplied for model
Gas.11 left side of support sting is a cylinder 11-1, inside has circular cavity, wherein set left-hand thread in outer cylinder, pass through connection
Bolt 9 is fixed with balance 8, and key lock position is used in combination.The stage casing of support sting 11 is the thicker cylinder of diameter, and inside is provided with ventilation
For pipeline 11-2 to provide current path, outer ledge is fluted, facilitates arrangement day horizontal line.It is equipped with ventilation in the downside of support sting 11
Entrance 11-3, wind-tunnel high-pressure air source thus access model.11 right side of support sting is a taper connection section, the support machine with wind-tunnel
Structure is connected.
In the above-mentioned technical solutions, the dummy head is positioned with die body by pin, screw lock；The cylinder
It is provided on one side end face of body structure for installing three threaded hole 2-8 for moving back balance unit.
In the above-mentioned technical solutions, the connection type between the balance and support sting is：Outside one end of the balance
Side is provided with screw thread, and left-hand thread is provided on the outside of one end of support sting, by the connection of balance attaching nut 9 and tight balance and
Support sting, the balance attaching nut 9 (as shown in Figure 17~18), is the connector of fixed weigher 8 and support sting 11, is used for
Tight balance 8 and support sting 11.On set positive/negative thread, it is ensured that the directionality that balance 8 is installed while ensureing balance 8 and tail
The sealing of strut 11.
In the above-mentioned technical solutions, when experiment does not have temperature requirement, hose replacement may be used in copper tube, this is soft
Pipe should be able to bear high pressure, using hose enhanced convenience, and the problems that can be brought to avoid this Hard link of copper tube.
The method that the model equipment being connected using jet pipe in the wind tunnel test of the utility model and shape is tested, including
Following steps：
Step 1: support sting 11 is mounted on the attack angle mechanism of wind-tunnel, by balance 8 and the day flushconnection spiral shell of support sting 11
Female (connection bolt) 9 is sealed with copper washer therebetween, flat key ensures 8 horizontal position of balance tightly；
Step 2: installing collet on balance 8, pass through platform of the level meter on 2 cylindrical structure 2-5 of die body
Die body 2 is fixed on balance 8 after centering by 2-1 centerings；
Step 3: one end of U-shaped ventilation elbow 4 is fixed on connecting tube on balance 8, the water of U-shaped ventilation elbow 4 is kept
It is flat；
Step 4: making copper tube 7 by the front side ladder cavity 2-6 on die body, die body 2 is passed through, with connection
Pipe 5 is fixed on the other end of U-shaped ventilation elbow 4, keeps the level of copper tube 7；
Step 5: copper tube 7 is connect with nozzle section 10, nozzle section 10 is inserted into the jet pipe of die body 2 from model tail portion
Reserved area 2-4 is simultaneously fixed；
Step 6: ventilating to model, it is ensured that the case where being not in gas leakage inside model；Determine that installation is errorless inside model
And after air tight, top cover board 3 is covered, completes the installation of model；
Step 7: when experiment, carries out having incoming, the experiment without jet flow first, obtain the aerodynamic data of aircraft；Its
It is secondary, it carries out without incoming, have the experiment of jet flow, obtain jet flow thrust data；Again, the experiment for carrying out incoming, having jet flow obtains
Aerodynamic force, thrust and the jet flow and free stream disturbance force data of aircraft；Finally, with the test data deduction for having incoming, having jet flow
Have incoming, the test data without jet flow and without incoming, have the test data of jet flow, obtain the interference force data of jet flow and incoming.
The model equipment that jet pipe is connected with shape in a kind of wind tunnel test of the utility model solves low thrust jet flow
Experimental technique problem provides the design of model, can not only ensure the ventilation of model in this manner, but also carry out six component gas
The measurement of power；Simultaneously using being tested using the device, the interference force data of jet flow and incoming is obtained, to hypersonic
The jet flow research of aircraft has excellent basis meaning, can solve the DATA REASONING encountered in much testing and modelling
Contradictory problems, have far-reaching ground application prospect.
It is not only in the description and the implementation although the embodiments of the present invention have been disclosed as above
Listed utilization, it can be applied to various fields suitable for the present invention completely, for those skilled in the art,
Other modifications may be easily implemented, therefore without departing from the general concept defined in the claims and the equivalent scope, this reality
It is not limited to specific details and legend shown and described herein with novel.
Claims (6)
1. the model equipment that jet pipe is connected with shape in a kind of wind tunnel test, which is characterized in that including：
The cylindrical cavity for being useful for link model main body is arranged inside in dummy head；
Die body, one end are cylindrical structure, and platform is provided on the upside of the cylindrical structure；The cylindrical structure
The stepped cylinder cavity being internally provided with for fixed weigher；It is symmetrically arranged in the front and rear sides of the cylindrical structure
Ladder cavity；The middle pars infrasegmentalis of the die body is model reserved area, and inside has etched-off area I；The die body
The other end is jet pipe reserved area, and the jet pipe reserved area is internally provided with two rectangular channels；
Top cover board coordinates with the model reserved area of die body with composition model stage casing, and the top cover board, which has, to be emptied
Region II；The etched-off area I and etched-off area II form the space for accommodating balance；
Balance, internal have a vent line, one end of the balance connect with collet after mounted on the die body
In stepped cylinder cavity, the other end is connect with support sting；
Internal air supply system comprising U-shaped ventilation elbow, one end going out by connecting tube and balance of the U-shaped ventilation elbow
Gas end is connected to, and the other end is connected to by connecting tube with one end of copper tube；
Nozzle section matches setting with the jet pipe reserved area, and the nozzle section is internally provided in room；The nozzle section
Ventilation connection entrance is provided on one end；One end of the ventilation connection entrance and the other end of copper tube are connected by connecting tube
It is logical；The other end of the ventilation connection entrance is connected to in room；The other end of the nozzle section be provided be connected to in room it is more
A stepped cylinder channel；The multiple jet pipes being connected to multiple stepped cylinder channels are provided on the nozzle section；Wherein, it adopts
It is detachably connected in different stepped cylinder channels with ventilation plug component and stuffiness plug component to realize to corresponding
The gas supply of jet pipe；
Support sting, it is internal that there is ventilation pipe, it is provided with the ventilation accessed for wind-tunnel high-pressure air source on the downside of the support sting
The ventilation pipe outlet of entrance, the support sting is connected to the other end of balance；The outside setting of the support sting is fluted.
2. the model equipment that jet pipe is connected with shape in wind tunnel test as described in claim 1, which is characterized in that the model
Head is positioned with die body by pin, screw lock；It is provided on one side end face of the cylindrical structure for installing
Move back three threaded holes of balance unit.
3. the model equipment that jet pipe is connected with shape in wind tunnel test as described in claim 1, which is characterized in that the connection
It is connected by copper tube adapter between pipe and copper tube.
4. the model equipment that jet pipe is connected with shape in wind tunnel test as described in claim 1, which is characterized in that the balance
Connection type between support sting is：It is provided with screw thread on the outside of one end of the balance, is set on the outside of one end of support sting
It is equipped with left-hand thread, is connected by balance attaching nut and tight balance and support sting.
5. the model equipment that jet pipe is connected with shape in wind tunnel test as described in claim 1, which is characterized in that multiple described
In stepped cylinder channel, the cylindrical channel of diameter minimum is connected in room；The medium cylindrical channel of diameter is connected with jet pipe；Directly
The maximum cylindrical channel of diameter is connected with model tail portion.
6. the model equipment that jet pipe is connected with shape in wind tunnel test as described in claim 1, which is characterized in that the red copper
Pipe is substituted using hose.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820103106.8U CN207779665U (en) | 2018-01-22 | 2018-01-22 | The model equipment that jet pipe is connected with shape in wind tunnel test |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358320A (en) * | 2021-08-10 | 2021-09-07 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for measuring force of interference of jet flow of upstream air for high-speed wind tunnel |
| CN115717981A (en) * | 2023-01-09 | 2023-02-28 | 中国空气动力研究与发展中心超高速空气动力研究所 | Chamber parking device for multiple spray pipes in wind tunnel test and using method |
-
2018
- 2018-01-22 CN CN201820103106.8U patent/CN207779665U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358320A (en) * | 2021-08-10 | 2021-09-07 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for measuring force of interference of jet flow of upstream air for high-speed wind tunnel |
| CN115717981A (en) * | 2023-01-09 | 2023-02-28 | 中国空气动力研究与发展中心超高速空气动力研究所 | Chamber parking device for multiple spray pipes in wind tunnel test and using method |
| CN115717981B (en) * | 2023-01-09 | 2023-04-21 | 中国空气动力研究与发展中心超高速空气动力研究所 | Resident chamber device for multiple spray pipes in wind tunnel test and use method |
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