CN206192622U - A high accuracy double hinge formula angle of sideslip converting means for wind tunnel test - Google Patents
A high accuracy double hinge formula angle of sideslip converting means for wind tunnel test Download PDFInfo
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- CN206192622U CN206192622U CN201621314627.5U CN201621314627U CN206192622U CN 206192622 U CN206192622 U CN 206192622U CN 201621314627 U CN201621314627 U CN 201621314627U CN 206192622 U CN206192622 U CN 206192622U
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- rotary shaft
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- wind tunnel
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Abstract
The utility model provides a continuous transformation that a high accuracy double hinge formula angle of sideslip converting means for wind tunnel test, the purpose is for realization wind tunnel test angle of sideslip degree to improve wind -tunnel test efficiency. It includes rotation axis no. 1, rotation axis no. 2, cover locking unit and encoder expand, rotation axis no. 1 is L shape, and its horizontal position and rotation axis no. 2 that constitutes L shape is fixed in the diaxon connecting piece through self -lubricating bearing respectively, and the worm wheel no. 1 of axle worm gear transmission group is fixed on rotation axis no. 1, and the worm wheel no. 2 of two worm gear transmissions on axle group is fixed on rotation axis no. 2, and the horizontal position tip of rotation axis no. 1 and the one end of rotation axis no. 2 are equipped with respectively to expand overlaps locking unit. The utility model discloses a rotation of self diaxon realizes driftage angle continuous transformation in the range ability. All set up the encoder on the diaxon, guaranteed the angle transformation accuracy, simultaneously, all set up the cover locking unit that expands at the tip of diaxon, the stability of the when experimental diaxon of having ensured to blow.
Description
Technical field：
The utility model is a kind of model in wind tunnel yaw angle converting means, to meet the examination of the wind-tunnel under different attitude angles
Requirement is tested, belongs to aviation aerodynamic force wind-tunnel technique field, and in particular to a kind of double rotating shafts of high accuracy for wind tunnel test
Formula yaw angle converting means.
Background technology：
Aerodynamics is air movement and air and object phase interaction when having relative motion between research air and object
With the specialism of rule.In aviation field, mainly exploratory flight device (mainly aircraft, also including helicopter and guided missile) exists
The principle flown in air, acts on carry-on air force with aircraft geometric shape, flight attitude, Mach number, Reynolds
The Changing Pattern of the Fundamentals such as number, and meet the geometrical property of aircraft and part required by certain aerodynamic quality.
Interaction rule when wind tunnel test is flow behavior, air and the relative motion of object of the technique study air using experiment
And other aerodynamics problems, it is exactly according to motion composition principle, by the model of aircraft or in kind solid simply
It is scheduled in ground artificial environment (wind-tunnel), artificially manufactures air current flow, aerial various complicated state of flights are simulated with this, obtains
Experimental data.
, it is necessary to enter line translation to the attitude of model during wind tunnel test, to obtain the aerodynamic data under different condition,
Model sideslip angular transformation is the important content of one of which.At present, generally breakked away using solid block formula as shown in Figure 1 in wind-tunnel
Conversion joint, the solid block joint weight in current wind-tunnel is larger, changes more laborious, typically only processes a few；It is simultaneously solid
The angle density of block joint is minimum 1 °, it is impossible to obtain other the focus true value in addition to fixed angle.Which can only be real
Existing a small number of side-slip angle conversion, a solid block joint of angle correspondence one, wastes time and energy；And the resistance of different sideslip angle joints
Plug degree size and rigidity are also inconsistent, and then produce influence to Flow Field in Wind Tunnel control and angular flexibility amendment；Simultaneously because solid
It is difficult to be found after the positioning key abrasion of block formula sideslip joint, is not easy to repair, so just generates side-slip angle error, and it is solid
The finished product expanding cover locking part of block formula sideslip joint needs to tighten multiple screws in fastening, needed during release it is special move back nail,
It is cumbersome.
The content of the invention：
The utility model provides a kind of double rotary shaft yaw angle converting means of high accuracy for wind tunnel test, its purpose
It is, in order to realize wind tunnel test side-slip angle continuous transformation, block formula sideslip angle joint admittedly to be substituted currently, so as to improve wind tunnel test
Efficiency.
The double rotary shaft yaw angle converting means of high accuracy for wind tunnel test of the present utility model, including rotary shaft one,
The gear unit of rotary shaft two, expanding cover locking unit and measuring unit, the rotary shaft one are L-shaped, its horizontal position for constituting L-shaped
It is fixed in two shaft coupling pieces by self-lubricating bearing respectively with rotary shaft two, the gear unit is passed including the worm and gear of axle one
Dynamic group and the Worm Wheel System group of axle two, the worm gear one of the Worm Wheel System group of axle one are fixed in rotary shaft one, the worm gear of axle two
The worm gear two of worm-drive group is fixed in rotary shaft two, and the horizontal position end of rotary shaft one and one end of rotary shaft two are distinguished
It is provided with expanding cover locking unit.
Used as further improvement of the utility model, the expanding cover locking unit includes expansion set overcoat, expansion set inner sleeve, expansion set
Lid, expansion set seat, expansion set overcoat are set in outside expansion set inner sleeve, and expansion set lid is arranged at the outside of expansion set inner sleeve, expansion set seat by bearing
It is located at the outer end of expansion set inner sleeve.Expanding cover locking unit is consequently formed, locking positioning is carried out to rotary shaft one and rotary shaft two, made
Two axles stop the rotation.
Used as further improvement of the utility model, the measuring unit is encoder.Can be quickly accurate by encoder
Detect the anglec of rotation of rotary shaft one and rotary shaft two.
Used as further improvement of the utility model, the worm screw one of the Worm Wheel System group of axle one and the worm and gear of axle two are passed
One end of the worm screw two of dynamic group is respectively equipped with handle.Rotary worm one and worm screw two are easy to by rotary handle, so as to drive two
Axle rotates.
As further improvement of the utility model, radome fairing is connected with the vertical position for constituting rotary shaft one.Pass through
Radome fairing carrys out combing and stops air-flow, is easy to the present apparatus smooth flight in wind-tunnel.
Used as further improvement of the utility model, the rotary shaft one is provided with thrust bearing.By thrust bearing come
Bear the axial force suffered by rotary shaft one.
Used as further improvement of the utility model, the end of the horizontal position of the rotary shaft one is provided with fiaring cone, whole
In the afterbody insertion expansion set seat of flow cone.Reduce the interference of wind tunnel experiment mechanism windward side by fiaring cone, due to rotary shaft two
Also to connect pole and the model involved by wind tunnel experiment mechanism, model is that windward, therefore its end need not install fiaring cone, institute
State the scale model that model is exactly the aircraft such as aircraft or guided missile.
The beneficial effects of the utility model are：The utility model is provided with two rotary shafts, and two rotary shafts pass through respectively
Self-lubricating bearing is serially connected in two shaft coupling pieces, can be rotated rotating around own axes, and two rotary shafts pass through itself
Rotation, realizes the continuous transformation of yaw angle in range ability, is specifically carried out in 0~8 ° of angular range arbitrarily angled
Continuous transformation.Yaw angle continuous transformation can obtain the actual value of any focus on trial curve, to discrete testing site
It is encrypted, overcoming solid block formula sideslip angle joint can only utilize a few click-through row interpolation to obtain the mistake that trial curve brings
Difference, so as to improve wind tunnel test accurate data degree.Encoder is provided with each rotary shaft, so as to ensure that angular transformation
Accuracy, meanwhile, be configured with expanding cover locking unit in the end of two rotary shafts, it is ensured that the He of rotary shaft one during blowing test
The stability of rotary shaft two.Device of the present utility model can obtain any side-slip angle in range ability, easy to operate, can
It is high by property；Two rotary shafts are installed from self-lubricating bearing, and physical dimension is small so that blockage percentage is small and non-maintaining；This reality
With new gear unit from double helical pitches Worm Wheel System group, its sideshake easily adjusts, ease of assembly and maintenance；This practicality is new
Rotation of the type using expanding cover locking unit to two axles carries out locking positioning, in concrete operations, only needs forward and reverse rotation expansion set seat
To fasten the fastening of two axles or release to two axles, its is easy to operate, time saving and energy saving.
Brief description of the drawings：
Fig. 1 is conventional 8 degree solid block joint schematic diagram；
Fig. 2 is cross-sectional view of the present utility model；
Fig. 3 is the profile of A-A in Fig. 1；
Fig. 4 is the profile of B-B in Fig. 1；
Fig. 5 is the structural representation of expanding cover locking unit；
Fig. 6 is the schematic diagram of expansion set inner sleeve.
Specific embodiment：
Converting means of the present utility model is for carrying out carrying fixed to dummy vehicle in wind tunnel experiment, passing through
Angular transformation of the converting means of the present utility model in wind-tunnel makes dummy vehicle that angular transformation is carried out in wind-tunnel to reach
Purpose.
Reference picture 2, Fig. 3 and Fig. 4, this is used for the double rotary shaft yaw angle converting means of high accuracy of wind tunnel test, including rotation
Rotating shaft 1, rotary shaft 27, gear unit, expanding cover locking unit 3 and measuring unit 4, the rotary shaft 1 are L-shaped, its composition
The horizontal position and rotary shaft 27 of L-shaped are fixed in two shaft coupling pieces 6 by self-lubricating bearing 8 respectively, the water of rotary shaft 1
The axis at flat position and the axis of rotary shaft 27 are not parallel, and angle between the two is 8 °, and the gear unit includes axle
One Worm Wheel System group and the Worm Wheel System group of axle two, the worm gear 1 of the Worm Wheel System group of axle one are fixed on rotary shaft
On one 1, the worm gear 2 11 of the Worm Wheel System group of axle two is fixed in rotary shaft 27, the horizontal position end of rotary shaft 1 and
One end of rotary shaft 27 is respectively equipped with expanding cover locking unit 3.The worm screw 1 and the worm gear snail of axle two of the Worm Wheel System group of axle one
One end of the worm screw 2 19 of bar transmission group is respectively equipped with handle 12.Radome fairing is connected with the vertical position for constituting rotary shaft 1
5.The rotary shaft 1 is provided with thrust bearing 18, and thrust bearing 18 is located at the corner of rotary shaft 1.The measuring unit 4
It is encoder.
Reference picture 2, Fig. 5 and Fig. 6, the expanding cover locking unit 3 include expansion set overcoat 13, expansion set inner sleeve 14, expansion set lid 15,
Expansion set seat 17, expansion set overcoat 13 is set in outside expansion set inner sleeve 14, and expansion set lid 15 is arranged at the outer of expansion set inner sleeve 14 by bearing 16
Side, expansion set seat 17 is located at the outer end of expansion set inner sleeve 14.The end of the horizontal position of the rotary shaft 1 is provided with fiaring cone 9, whole
In the afterbody insertion expansion set seat 17 of flow cone 9.
The utility model is a kind of model in wind tunnel posture changing device, its be it is a kind of can be with continuous transformation yaw angle
2DOF mechanism.The α angles change of the device combination wind-tunnel attack angle mechanism, by itself two axles, i.e. rotary shaft 1 and rotation
The rotary motion of axle 27 come realize side-slip angle convert.When rotary shaft 24 rotates the angles of γ 1 from vertical state state, will rotate
Axle 27 is projected in X-Y and X-Z faces respectively, and projection is angle of attack angle of attack and yaw angle β with X-Y axles, the angle of X-Z.Pass through
Geometrical relationship can be obtained
According to geometrical relationship, have
Wherein, a is projected length of the axis of rotary shaft 27 in wind-tunnel X-Y plane；B is that rotary shaft 27 is in level or perpendicular
In wind-tunnel Y-Z plane projected length under straight state；α is the angle of attack；β is yaw angle；γ 1 is that double rotating shafts are vertical from just pre- inclined 8 ° of angles of attack
The angle that position rotates around axle one (wind-tunnel X axis).
Thus, it is possible to the angle of attack walking amount and the amount of spin of axle one under correspondence yaw angle are obtained, then by rotating rotary shaft
27 by the model leveling of the present apparatus.So realize change the attack angle mechanism angle of attack and double rotating shafts (rotary shaft one 1, rotary shaft
2 angle 7), it is achieved thereby that the replacing of model yaw angle.
The running of package unit is：
According to the yaw angle and direction to be converted, wind-tunnel attack angle mechanism stroke value and rotary shaft one 1, rotary shaft are determined
The angle value (previous calibration) of rotation required for 27.Rotary shaft 1 is driven to rotate using the Worm Wheel System group of axle one, it is ensured that
Encoder indicating value in rotary shaft 1 is corresponding with previous calibration value, the expanding cover locking unit 3 of locking rotary shaft 1 end, allows rotation
Rotating shaft 1 stops operating.Attack angle mechanism stroke is adjusted according to previous calibration table numerical value, the axis of rotary shaft 27 is in level
In face.The Worm Wheel System group of adjustment axis two so that model roll angle is zero (level), it zero refers to winged that model roll angle is
The both sides wing or missile wing corresponding point position of row device model are supplied in sustained height, the encoder count now recorded in rotary shaft 27
Subsequent reference, the expanding cover locking unit 3 of locking rotary shaft 27 end, allows rotary shaft 27 to stop operating.After the completion of above-mentioned work
Can be tested.
Claims (7)
1. a kind of double rotary shaft yaw angle converting means of high accuracy for wind tunnel test, including rotary shaft one (1), rotary shaft two
(7), gear unit, expanding cover locking unit (3) and measuring unit (4), the rotary shaft one (1) are L-shaped, its water for constituting L-shaped
Flat position and rotary shaft two (7) are fixed in two shaft coupling pieces (6) by self-lubricating bearing (8) respectively, the gear unit bag
The Worm Wheel System group of axle one and the Worm Wheel System group of axle two are included, the worm gear one (10) of the Worm Wheel System group of axle one is fixed on
In rotary shaft one (1), the worm gear two (11) of the Worm Wheel System group of axle two is fixed in rotary shaft two (7), rotary shaft one (1)
One end of horizontal position end and rotary shaft two (7) is respectively equipped with expanding cover locking unit (3).
2. a kind of double rotary shaft yaw angle converting means of high accuracy for wind tunnel test as claimed in claim 1, its feature
It is：The expanding cover locking unit (3) includes expansion set overcoat (13), expansion set inner sleeve (14), expansion set lid (15), expansion set seat (17),
Expansion set overcoat (13) is set in expansion set inner sleeve (14) outward, and expansion set lid (15) is arranged at the outer of expansion set inner sleeve (14) by bearing (16)
Side, expansion set seat (17) is located at the outer end of expansion set inner sleeve (14).
3. a kind of double rotary shaft yaw angle converting means of high accuracy for wind tunnel test as claimed in claim 1, its feature
It is：The measuring unit (4) is encoder.
4. a kind of double rotary shaft yaw angle converting means of high accuracy for wind tunnel test as claimed in claim 1, its feature
It is：One end difference of the worm screw one (2) of the Worm Wheel System group of axle one and the worm screw two (19) of the Worm Wheel System group of axle two
It is provided with handle (12).
5. a kind of double rotary shaft yaw angle converting means of high accuracy for wind tunnel test as claimed in claim 1, its feature
It is：Radome fairing (5) is connected with the vertical position for constituting rotary shaft one (1).
6. a kind of double rotary shaft yaw angle converting means of high accuracy for wind tunnel test as claimed in claim 1, its feature
It is：The rotary shaft one (1) is provided with thrust bearing (18).
7. a kind of double rotary shaft yaw angle converting means of high accuracy for wind tunnel test as claimed in claim 2, its feature
It is：The end of the horizontal position of the rotary shaft one (1) is provided with fiaring cone (9), the afterbody insertion expansion set seat of fiaring cone (9)
(17) in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621314627.5U CN206192622U (en) | 2016-12-02 | 2016-12-02 | A high accuracy double hinge formula angle of sideslip converting means for wind tunnel test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621314627.5U CN206192622U (en) | 2016-12-02 | 2016-12-02 | A high accuracy double hinge formula angle of sideslip converting means for wind tunnel test |
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| CN206192622U true CN206192622U (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621314627.5U Active CN206192622U (en) | 2016-12-02 | 2016-12-02 | A high accuracy double hinge formula angle of sideslip converting means for wind tunnel test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768801A (en) * | 2016-12-02 | 2017-05-31 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of double rotary shaft yaw angle converting means of high accuracy for wind tunnel test |
-
2016
- 2016-12-02 CN CN201621314627.5U patent/CN206192622U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768801A (en) * | 2016-12-02 | 2017-05-31 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of double rotary shaft yaw angle converting means of high accuracy for wind tunnel test |
| CN106768801B (en) * | 2016-12-02 | 2023-06-06 | 中国航空工业集团公司沈阳空气动力研究所 | High-precision double-rotating-shaft side slip angle conversion device for wind tunnel test |
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