CN206450398U - A kind of multivariant sub- big attack angle mechanism of transonic and supersonic wind tunnel - Google Patents
A kind of multivariant sub- big attack angle mechanism of transonic and supersonic wind tunnel Download PDFInfo
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- CN206450398U CN206450398U CN201621460692.9U CN201621460692U CN206450398U CN 206450398 U CN206450398 U CN 206450398U CN 201621460692 U CN201621460692 U CN 201621460692U CN 206450398 U CN206450398 U CN 206450398U
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Abstract
A kind of multivariant sub- big attack angle mechanism of transonic and supersonic wind tunnel, framework is the installation foundation of whole mechanism；Described forearm component is identical with rear arm component composition structure, including servomotor, gear pair, ball-screw, rolling guide and corresponding arm；The sliding block of rolling guide is connected on framework, the rolling guide that forearm, postbrachium are distinguished in corresponding component is connected, servomotor, gear pair, ball-screw and the straight-line motion mechanism of rolling guide formation drive arm before and after to move up and down, the lower end of forearm is connected by hinge axis with model pole pedestal, the lower end of postbrachium is hinged with forearm one end, and the other end and the model pole pedestal of forearm are hinged；During experiment, according to the angle of attack to be tested, two servomotors of control rotate drive forearm respectively and postbrachium moves up and down, when forearm is consistent with the up and down motion speed of postbrachium, the translation of implementation model pole, two position sensors are respectively used to the displacement of sensitive forearm, postbrachium, and sensitive displacement is exported to outside, outside to combine closed-loop control of the angle of attack to be tested realization to servomotor according to displacement.
Description
Technical field
The utility model is related to Asia across the experimental rig field of super wind-tunnel, mainly a kind of big angle of attack of multivariant wind-tunnel
Mechanism.
Background technology
Super maneuverability, super agility are the important tactical qualities indexs of forth generation aircraft, the good pneumatic property of the big angle of attack
Can be that forth generation aircraft obtains super maneuverability, the primary condition of super agility, and wind tunnel test is the big angle of attack of exploratory flight device
The important means of aeroperformance, wind-tunnel test at high attack angle technology is a crucial wind-tunnel special test technology.In addition, modernism
Hole is developed towards with stronger test capability, higher production efficiency and lower operating cost direction, often requires that one
Simulation model trystate as much as possible during secondary blowing, the pitching of such as model, driftage, rolling, transverse translation, longitudinal direction are flat
Posture and the action such as move, these actions must by etc. various types of mechanisms coordinate control programs to realize.
Wind tunnel test requires that the posture position of model support mechanism is accurate and has enough rigidity and intensity, small resistance
Plug than and relatively low flow field jamming performance, because tail supporting construction is simple, versatility is good, flow field disturbs small, thus in each wind
It is most widely used in hole.The general structure of tail support is that internal strain gage balance is arranged in model cavity, passes through pole and wind
The mounting system connection in hole.The wind-tunnel mounting system supported using tail common are tulwar support, multi link support, side window branch
The forms such as frame, articulated type support, various supports be applied to different experiment occasions, with it is different the characteristics of and advantage, this is several
The Basic Design thinking of support is, using the implementation model angle of attack as main target, angle of attack preparatory function to be superimposed on this basis, is breakked away
Angle function, roll angle function, to realize the various model attitudes required for wind tunnel test.
The content of the invention
Technology of the present utility model solves problem：Overcoming the deficiencies in the prior art, there is provided a kind of multivariant Asia
The big attack angle mechanism of transonic and supersonic wind tunnel.
Technical solution of the present utility model is：A kind of multivariant sub- big attack angle mechanism of transonic and supersonic wind tunnel, bag
Include forearm component, rear arm component, framework, position sensor；Framework is the installation foundation of whole mechanism；Described forearm component and
Arm component composition structure is identical afterwards, including servomotor, gear pair, ball-screw, rolling guide and corresponding arm；Rolling is led
The sliding block of rail is connected on framework, and the rolling guide that forearm, postbrachium are distinguished in corresponding component is connected, servomotor, gear
Secondary, ball-screw and the straight-line motion mechanism of rolling guide formation drive arm before and after to move up and down, and the lower end of forearm passes through hinge
Axle is connected with model pole pedestal, and lower end and forearm one end of postbrachium are hinged, and the other end and the model pole pedestal of forearm are hinged；Experiment
When, according to the angle of attack to be tested, two servomotors of control rotate drive forearm respectively and postbrachium moves up and down, when forearm and postbrachium
Up and down motion speed it is consistent when, the translation of implementation model pole, two position sensors are respectively used to sensitive forearm, postbrachium
Displacement, sensitive displacement is exported to outside, outside to combine closed loop control of the angle of attack to be tested realization to servomotor according to displacement
System.
Also include be arranged on framework on limit switch, by up and down two diverse locations limit switch, prevent forearm,
Postbrachium hits wind-tunnel wainscot and lower wall panels.
Forearm is located at the rolling guide length that the rolling guide length in windward side, rear arm component is more than in forearm component.
Also include connection guide rail, the track of connection guide rail is connected with forearm, and the sliding block of connection guide rail is connected with postbrachium.
Described position sensor uses potentiometer.
Described limit switch uses contactless Hall-type electromagnetic switch element.
Also include the rolling arm component being arranged on model pole pedestal, rolling arm component band movable model pole is rotated,
Coupled using the position of the angle of attack of mechanism, roll angle, obtain being arranged on the angle of attack, the yaw angle posture of model pole front end model.
Described rolling arm component includes rolling joint, gear pair I, servomotor I, needle bearing, pilot protection pipe, mould
Type pole pedestal, rotating shaft；The rotation of servomotor I is transferred to rolling joint by gear pair I rotates it；Rolling joint afterbody is inserted
In model pole pedestal internal cavities, constrained by needle bearing, front end is connected with model pole.
Servomotor I is arranged on the lower section of rolling joint.
The utility model has the beneficial effect that compared with prior art：
(1) a kind of multivariant Asia of the utility model is across the big attack angle mechanism of super wind-tunnel, is integrated with the big angle of attack, above and below model
Mobile, -- aggregate motion that moves up and down, become roll angle, coupling automatically the realize the angle of attack -- function such as yaw angle posture that becomes the angle of attack,
Many attitude suitable for Asia across super model in wind tunnel is controlled, with vdiverse in function, range of angles of attack is big, model sport scope
Greatly, the flexible advantage of control program.
(2) a kind of multivariant Asia of the utility model is across the big attack angle mechanism of super wind-tunnel, using the knot based on multi link
Structure realizes the angle of attack and moved up and down have the advantages that simple in construction, convenient disassembly, achievable range of angles of attack are big.
(3) a kind of multivariant Asia of the utility model passes through rolling across super wind-tunnel big attack angle mechanism between forearm and postbrachium
Dynamic guide rail connection, makes the rigidity of postbrachium and forearm further strengthen, and has the advantages that rigidity is big, stabilized structure.
(4) a kind of multivariant Asia of the utility model is across the big attack angle mechanism of super wind-tunnel, and forearm and postbrachium all employ electricity
Position is counted as feeding back for position, realizes the position-force control of forearm and postbrachium, with position and angle of attack precision be high, position and attacks
Angle controls reliable advantage.
(5) a kind of multivariant Asia of the utility model is across the big attack angle mechanism of super wind-tunnel, and forearm employs non-connect with postbrachium
The limit switch of touch, it is to avoid the mechanical failure that maloperation is caused, has the advantages that durability is good.
(6) a kind of multivariant sub- rolling motor arrangement across in the big attack angle mechanism of super wind-tunnel, swing arm of the utility model
In the lower section of rolling joint, electromagnetic interference of the servomotor to model measurement parameter signal is reduced, is conducive to obtaining accurate
Model measurement parameter, has the advantages that electromagnetic interference is small.
The utility model has that blockage ratio is small, vdiverse in function, structure is reliable, it is easy to use the characteristics of, be a set of practicality
Very strong Asia is across the big attack angle mechanism of super wind-tunnel.
Brief description of the drawings
Fig. 1 is general structure schematic diagram of the present utility model；
Fig. 2 is the zoomed-in view of the utility model rolling arm component；
Fig. 3 is that the utility model upper and lower translation moves schematic diagram；
Fig. 4 is the big angle of attack motion schematic diagram of the utility model；
Fig. 5 is wind tunnel axis system and model coordinate systems transforming relationship figure.
Embodiment
Below in conjunction with the accompanying drawings and example elaborates to the utility model, the utility model it is a kind of it is multivariant it is sub- across
The big attack angle mechanism of supersonic wind tunnel, as shown in figure 1, including forearm component, rear arm component, framework 2, position sensor 3；Framework 2
For the installation foundation of whole mechanism；Described forearm component is identical with rear arm component composition structure, including servomotor 11, tooth
Wheel set 12, ball-screw 13, rolling guide 14 and corresponding arm (forearm 15, postbrachium 17)；The sliding block of rolling guide 14 is connected in
On framework 2, the rolling guide that forearm 15, postbrachium 17 are distinguished in corresponding component is connected, and forearm is located at windward side, rear arm component
In rolling guide length be more than forearm component in rolling guide length.Can be by connecting guide rail between forearm 15 and postbrachium 17
16 connections；The track of connection guide rail 16 is connected with forearm 15, and the sliding block of connection guide rail 16 is connected with postbrachium 17, makes the one of postbrachium 17
End is converted into simple beam structure by cantilever beam structure, so as to strengthen the rigidity of postbrachium 17, makes the structure of postbrachium 17 lighter and handier
It is firm.Servomotor 11, gear pair 12, ball-screw 13 and the straight-line motion mechanism of rolling guide formation are driven above and below arm before and after
Motion, the lower end of forearm 15 is connected by hinge axis with model pole pedestal, and lower end and the one end of forearm 18 of postbrachium 17 are hinged, forearm
18 other end is hinged with model pole pedestal；During experiment, according to the angle of attack to be tested, two servomotors of control rotate drive respectively
Forearm and postbrachium move up and down, when forearm is consistent with the up and down motion speed of postbrachium, the translation of implementation model pole, two positions
The displacement that sensor is respectively used to sensitive forearm, postbrachium is put, sensitive displacement is exported to outside, outside combined according to displacement is treated
Test closed-loop control of the angle of attack realization to servomotor.
Further, the utility model also includes the limit switch being arranged on framework, passes through two diverse locations up and down
Limit switch, prevent forearm, postbrachium from hitting wind-tunnel wainscot and lower wall panels.Limit switch is using contactless Hall-type electricity
Magnetic switch element, it is to avoid touch switch switchs the device damage caused repeatedly, with reliability it is high the characteristics of.
Position sensor 3, which is used, uses stay-supported potentiometer in potentiometer, this example；The pedestal of position sensor 3 is fixed on
On framework 2, the bracing wire of position sensor is connected with forearm 15, postbrachium 17
The utility model also includes the rolling arm component 6 being arranged on model pole pedestal, rolling arm component band movable model branch
Bar is rotated, using the angle of attack of mechanism, roll angle position couple, obtain installed in model pole front end model the angle of attack,
Yaw angle posture.Specifically as shown in Fig. 2 rolling arm component 6 includes rolling joint 61, gear pair I 62, servomotor I 63, needle roller
Bearing 64, pilot protection pipe 65, model pole pedestal 66, rotating shaft 67；The rotation of servomotor I 63 is transferred to by gear pair I 62
Rolling joint 61 rotates it, the roll attitude of Controlling model, and it is -180 °~180 ° to reach roll angle scope；Rolling joint
61 afterbodys are inserted in the internal cavities of model pole pedestal 66, are constrained by needle bearing 64, and front end is connected with model pole.Servo electricity
Machine I 63 is arranged on the lower section of rolling joint 61, so that electromagnetic interference of the servomotor to model measurement parameter signal will be reduced,
Be conducive to obtaining accurate model measurement parameter.
The utility model can also the distance between secondary I 62 two gears of design gear it is adjustable, missed so as to avoid processing
Gear pair return difference is larger caused by the factors such as the tooth form displacement that difference, abrasion are caused, and turn error control is wanted in wind tunnel test
In the angle precision control range asked.
Forearm 15 forms basic quadric chain with postbrachium 17, forearm 18, model pole pedestal 66.Control forearm 15 with
Postbrachium 17 is moved in the same direction and speed is consistent, then the relative position and angular relationship of forearm 18 and model pole pedestal 66 do not become
Change, the movement locus of model is upward-downward translation, this function to realize wind tunnel model in test section even flow field area above and below
Translation, reaches the purpose that avoidance assay section shock wave, head reflected shock wave etc. influence on missile wing, tail vane, the measurement wing, measurement rudder, such as
Fig. 3 illustrates；
Control that forearm 15 and postbrachium 17 are moved in the same direction and speed is inconsistent【Generally the speed of forearm 15 is slow, the speed of postbrachium 17
It hurry up】, then the relative position and angular relationship of forearm 18 and model pole pedestal 66 change, the movement locus of model is the upper bottom
Dynamic, the angle of attack of this function to realize wind tunnel model, range of angles of attack can reach -10 °~65 °, such as Fig. 4 signals.Also can be using flat
It is dynamic with differential various combination control programs, according to experiment it needs to be determined that.
The utility model changes rotational angle α of the model pole in vertical guide by attack angle mechanismm, pass through rolling joint
The automatic roll angle γ for changing model, so that angle of attack is realized in coupling in wind tunnel test -- yaw angle β trystate.Such as Fig. 5
Shown, angle of the model axis between fore-and-aft plane and wind-tunnel axis is exactly the angle of attack of model, in the horizontal plane with wind-tunnel axle
Angle between line is exactly the yaw angle β of model, and formula is：
Sin α=cos γ × tan αm
Sin β=sin γ × sin αm,
The utility model unspecified part belongs to general knowledge as well known to those skilled in the art.
Claims (9)
1. a kind of multivariant sub- big attack angle mechanism of transonic and supersonic wind tunnel, it is characterised in that：Including forearm component, postbrachium group
Part, framework (2), position sensor (3)；Framework (2) is the installation foundation of whole mechanism；Described forearm component and rear arm component
Structure is constituted identical, including servomotor (11), gear pair (12), ball-screw (13), rolling guide (14) and corresponding
Arm；The sliding block of rolling guide (14) is connected on framework (2), the rolling in forearm (15), the corresponding component of postbrachium (17) difference
Dynamic guide rail is connected, servomotor (11), gear pair (12), ball-screw (13) and the straight-line motion mechanism band of rolling guide formation
Dynamic arm before and after is moved up and down, and the lower end of forearm (15) is connected by hinge axis with model pole pedestal, the lower end of postbrachium (17) with it is small
Arm (18) one end is hinged, and the other end and the model pole pedestal of forearm (18) are hinged；During experiment, according to the angle of attack to be tested, control two
Platform servomotor rotates drive forearm respectively and postbrachium moves up and down, when forearm is consistent with the up and down motion speed of postbrachium, real
The translation of existing model pole, two position sensors are respectively used to the displacement of sensitive forearm, postbrachium, by sensitive displacement export to
Outside, it is outside that closed-loop control of the angle of attack to be tested realization to servomotor is combined according to displacement.
2. mechanism according to claim 1, it is characterised in that：Also include the limit switch being arranged on framework, by upper
The limit switch of lower two diverse locations, prevents forearm, postbrachium from hitting wind-tunnel wainscot and lower wall panels.
3. mechanism according to claim 1, it is characterised in that：Forearm is located at the rolling guide in windward side, rear arm component
Length is more than the rolling guide length in forearm component.
4. mechanism according to claim 1, it is characterised in that：Also include connection guide rail (16), the rail of connection guide rail (16)
Road is connected with forearm (15), and the sliding block of connection guide rail (16) is connected with postbrachium (17).
5. mechanism according to claim 1, it is characterised in that：Described position sensor uses potentiometer.
6. mechanism according to claim 2, it is characterised in that：Described limit switch is using contactless Hall-type electricity
Magnetic switch element.
7. mechanism according to claim 1, it is characterised in that：Also include the rolling arm component being arranged on model pole pedestal
(6), rolling arm component band movable model pole is rotated, and is coupled, is arranged on using the position of the angle of attack of mechanism, roll angle
The angle of attack of model pole front end model, yaw angle posture.
8. mechanism according to claim 7, it is characterised in that：Described rolling arm component (6) include rolling joint (61),
Gear pair I (62), servomotor I (63), needle bearing (64), pilot protection pipe (65), model pole pedestal (66), rotating shaft
(67)；The rotation of servomotor I (63) is transferred to rolling joint (61) by gear pair I (62) rotates it；Rolling joint
(61) afterbody is inserted in model pole pedestal (66) internal cavities, is constrained by needle bearing (64), front end is connected with model pole.
9. mechanism according to claim 8, it is characterised in that：Servomotor I (63) is arranged under rolling joint (61)
Side.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621460692.9U CN206450398U (en) | 2016-12-29 | 2016-12-29 | A kind of multivariant sub- big attack angle mechanism of transonic and supersonic wind tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621460692.9U CN206450398U (en) | 2016-12-29 | 2016-12-29 | A kind of multivariant sub- big attack angle mechanism of transonic and supersonic wind tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840584A (en) * | 2016-12-29 | 2017-06-13 | 中国航天空气动力技术研究院 | A kind of multivariant sub- big attack angle mechanism of transonic and supersonic wind tunnel |
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2016
- 2016-12-29 CN CN201621460692.9U patent/CN206450398U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840584A (en) * | 2016-12-29 | 2017-06-13 | 中国航天空气动力技术研究院 | A kind of multivariant sub- big attack angle mechanism of transonic and supersonic wind tunnel |
| CN106840584B (en) * | 2016-12-29 | 2019-12-31 | 中国航天空气动力技术研究院 | Multi-degree-of-freedom sub-span supersonic wind tunnel large attack angle mechanism |
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