CN106768817A - A kind of roll angle measurement method of non-axis symmetry model in wind tunnel - Google Patents
A kind of roll angle measurement method of non-axis symmetry model in wind tunnel Download PDFInfo
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- CN106768817A CN106768817A CN201611241302.3A CN201611241302A CN106768817A CN 106768817 A CN106768817 A CN 106768817A CN 201611241302 A CN201611241302 A CN 201611241302A CN 106768817 A CN106768817 A CN 106768817A
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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
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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Abstract
The invention discloses a kind of roll angle measurement method of non-axis symmetry model in wind tunnel, belong to wind-tunnel technique field.Method is accurately connected by devising a kind of rolling angle measurement frock of non-axis symmetry model in wind tunnel with model cooperation, measuring table is designed with device, it is convenient and reliable using the method by wind tunnel test with the roll angle of the indirect measurement model of the angle of quadrant measuring table.
Description
Technical field
The invention belongs to test aerodynamic scope, it is related to a kind of rolling angle measurement of non-axis symmetry model in wind tunnel
Method.
Background technology
It is with the method for the lateral aerodynamic characteristics of angle of attack mechanism coupling measurement test model by converting different roll angles
A kind of conventional wind tunnel test methods.For axisymmetric model, along the circumferential angle groove at regular intervals of model, using height gauge
The method for measuring groove measures the roll angle of test model, usual when roll angle is little for model of the top with plane
Roll angle is measured using quadrant measurement plane, and above-mentioned side cannot be then used for the nonaxisymmetric model that top does not have plane
Method measures roll angle.
The content of the invention
The problem to be solved in the present invention is to overcome the deficiencies in the prior art, there is provided one kind measurement non-axis symmetry wind tunnel test mould
The method of type roll angle.
The technical scheme is that：A kind of roll angle measurement method of non-axis symmetry model in wind tunnel, step is as follows：
The first step, designs frock, the disc structure of an outwardly platform, platform interior centered on described frock main body
Processing coordinates inner chamber for coordinating with non-axis symmetry model in wind tunnel, and observation window is processed on disk and positioned at the outside of platform,
Platform is used to provide the plane that quadrant measures roll angle；
Second step, determines the Working position of the outside column pin hole on disk and positioned at platform, it is ensured that frock and described mould
When type is installed in place, during one of plateau levels of platform, the roll angle of model is 0 °, and marks and put down on the basis of the plane
Face；
3rd step, inner chamber is coordinated and therebetween by installed in column pin hole by the assembling face of cylinder insertion of described model
Interior pin is firmly connected；
4th step, determines that plane minimum with horizontal plane angle on platform installs quadrant as measurement plane, and judging should
Plane whether on the basis of plane, if datum plane, then the instruction directly according to quadrant determines the current roll angle of model, no
Then, the instruction according to quadrant is combined according to the position relationship between current measurement plane and datum plane, is determined that model is current
Roll angle；
Whether 5th step, judgment models current roll angle needs roll angle to be mounted when being experiment, if so, then current
Position assembling model and balance simultaneously lay down frock；Otherwise, the 6th step is turned；
6th step, calculates the angle for needing rotation, judges whether the angle can be rotated in place in current measurement plane, if
Can, then the angle that the instruction rotation according to quadrant needs, in place after assembling model and balance and lay down frock；If current measurement
Plane can not be rotated in place, then rotating model and record the angle of rotation in the range of current measurement plane, reselect afterwards
Minimum plane installs quadrant as measurement plane with horizontal plane angle, repeats the 6th step.
A kind of roll angle measurement method of non-axis symmetry model in wind tunnel, step is as follows：
The first step, designs frock, the disc structure of an outwardly platform, platform interior centered on described frock main body
Processing coordinates inner chamber for coordinating with non-axis symmetry model in wind tunnel, and observation window is processed on disk and positioned at the outside of platform,
Platform is used to provide the plane that quadrant measures roll angle；
Second step, determines the Working position of the outside column pin hole on disk and positioned at platform, it is ensured that frock and described mould
When type is installed in place, during one of plateau levels of platform, the roll angle of model is 0 °, and marks and put down on the basis of the plane
Face；According to the position relationship between other planes and datum plane, determine that each plane can measure the scope of roll angle；
3rd step, inner chamber is coordinated and therebetween by installed in column pin hole by the assembling face of cylinder insertion of described model
Interior pin is firmly connected；
4th step, each plane can measure roll angle in needing model roll angle to be mounted and second step during according to experiment
Scope, it would be desirable to the model roll angle of installation be in measurement range plane as measurement plane；
5th step, measurement plane is rotated to level and quadrant is installed, according to current measurement plane and datum plane it
Between position relationship combine according to the instruction of quadrant, determine the current roll angle of model；
6th step, needs roll angle to be mounted during according to the current roll angle binding tests of model, calculating needs rotation
Angle, then the angle that the instruction rotation according to quadrant needs, in place after assembling model and balance and lay down frock.
The determination of datum plane is accomplished in the following manner：
First, the assembling face of cylinder insertion of model is coordinated into inner chamber, rotating model is 0 ° of state in roll angle, and revolves
Rotating tooling makes a certain plane of platform be in horizontality；The model and frock that above-mentioned condition will be met are connected；Then exist
At least 2 column pin holes are processed together with model on disk and positioned at the outside of platform 5, the above-mentioned plane in horizontality is
Datum plane.
Described platform is quadrangle or hexagon platform.
When platform is quadrangle, whether the basis for estimation that can be rotated in place is current measurement plane to current measurement plane
45 ° of the angle ＜ rotated with the angle+needs of horizontal plane.
When platform is hexagon, whether the basis for estimation that can be rotated in place is current measurement plane to current measurement plane
30 ° of the angle ＜ rotated with the angle+needs of horizontal plane.
Compared with the prior art, the invention has the advantages that：
Usual axisymmetric model is the installation requirement according to test mission to roll angle, and certain intervals are circumferentially portrayed along body
Angle and with the groove of diameter parallel, with height gauge be placed on reference platform measure groove installation interval angle integral multiple rolling
Angle, and using the method shortcoming one of groove be that groove portrays position precision and is difficult to ensure during nonaxisymmetric model, it is particularly bent
Face radian be difficult when larger ensure groove in same level, two be particularly flat appearance when height gauge measure when be difficult it is right
Quasi- groove, certainty of measurement can not meet installation requirement.The method of the present invention overcomes prior art by the means of indirect measurement
Deficiency, roll angle alignment error<3 ', meet requirement of the experiment to model installation accuracy.
Brief description of the drawings
Fig. 1 is the tool structure schematic diagram that the present invention is used；
Fig. 2 is the model mating surface structural representation coordinated with the device.
Specific embodiment
The present invention is described in further details below in conjunction with accompanying drawing and specific implementation example.
Embodiment 1
A kind of roll angle measurement method of non-axis symmetry model in wind tunnel, step is as follows：
The first step, designs frock, the disc structure of an outwardly platform 5 centered on described frock main body, in platform 5
Portion's processing coordinates inner chamber 1 for coordinating with non-axis symmetry model in wind tunnel, processes on disk 2 and positioned at the outside of platform 5 and sees
Window 4 is examined, platform 5 is used to provide the plane that quadrant measures roll angle, and platform is quadrilateral structure in this example.In observation window this example
Circumferential uniform 4, its effect is both used for mitigating the weight of platform, and for the position of pin-and-hole on observing and nursing counterface, just
Installation is aligned in pin-and-hole,
Second step, determines that the Working position of the outside column pin hole 3 on disk 2 and positioned at platform 5 (processes 2 posts in this example
Pin-and-hole), it is ensured that when frock is installed in place with described model, during one of plateau levels of platform 5, the roll angle of model is
0 °, and mark plane on the basis of the plane；
First, by the assembling face of cylinder 7 of model insert cooperation inner chamber 1, rotating model in the state that roll angle is 0 °, and
Rotary tooling makes a certain plane of platform be in horizontality；The model and frock that above-mentioned condition will be met are connected；Then
At least 2 column pin holes, the above-mentioned plane in horizontality are processed together with model on disk 2 and positioned at the outside of platform 5
As datum plane.
3rd step, inserts cooperation inner chamber 1, and frock is coordinated section 6 with model by the assembling face of cylinder 7 of described model
It is in close contact, and is firmly connected by the pin in column pin hole 3 therebetween；
4th step, determines that plane minimum with horizontal plane angle on platform installs quadrant as measurement plane, and judging should
Plane whether on the basis of plane, if datum plane, then the instruction directly according to quadrant determines the current roll angle of model, no
Then, the instruction according to quadrant is combined according to the position relationship between current measurement plane and datum plane, is determined that model is current
Roll angle；
Whether 5th step, judgment models current roll angle needs roll angle to be mounted when being experiment, if so, then tightening drawing
Tight bolt 8, model is compressed by pad 10, makes the model conical surface 9 and balance secure fit, then lays down frock, and model head
Portion loads onto, roll angle installation.；Otherwise, the 6th step is turned；
6th step, calculates the angle for needing rotation, judges whether the angle can be rotated in place in current measurement plane, example
If if the measurement plane in the 4th step in this example and the angle of horizontal plane are 10 °, for quadrangle platform, the measurement plane energy
Enough most 35 ° of anglecs of rotation for allowing；If can, the instruction according to quadrant rotates the angle for needing, in place rear assembling model
With balance and lay down frock；If current measurement plane can not be rotated in place, rotating model is simultaneously in the range of current measurement plane
The angle of rotation is recorded, the plane minimum with horizontal plane angle is reselected afterwards quadrant is installed as measurement plane, repeated
6th step.
Embodiment 2
A kind of roll angle measurement method of non-axis symmetry model in wind tunnel, step is as follows：
The first step, designs frock, the disc structure of an outwardly platform 5 centered on described frock main body, in platform 5
Portion's processing coordinates inner chamber 1 for coordinating with non-axis symmetry model in wind tunnel, processes on disk 2 and positioned at the outside of platform 5 and sees
Window 4 is examined, platform 5 is used to provide the plane that quadrant measures roll angle；
Second step, determines the Working position of the outside column pin hole 3 on disk 2 and positioned at platform 5, it is ensured that frock with it is described
When model is installed in place, during one of plateau levels of platform 5, the roll angle of model is 0 °, and on the basis of marking the plane
Plane；According to the position relationship between other planes and datum plane, determine that each plane can measure the scope of roll angle；
The determination reference embodiment 1 of datum plane, when platform is quadrangle, it is assumed that marked respectively clockwise with substantially planar
Remember that other planes are A, B, C；The scope that then datum plane can measure roll angle is -45 °~+45 °；The scope of A planes for-
90 °~-45 °, 45 °~90 °, the scope of B planes is -135 °~-90 °, 90 °~135 °；The scope of C planes be -180 °~-
135 °, 135 °~180 °.
3rd step, inserts the assembling face of cylinder 7 of described model cooperation inner chamber 1 and frock is coordinated section 6 with model
It is in close contact, and is firmly connected by the pin in column pin hole 3 therebetween；
4th step, each plane can measure roll angle in needing model roll angle to be mounted and second step during according to experiment
Scope, it would be desirable to the model roll angle of installation be in measurement range plane as measurement plane；
5th step, measurement plane is rotated to level and quadrant is installed, according to current measurement plane and datum plane it
Between position relationship combine according to the instruction of quadrant, determine the current roll angle of model；
6th step, needs roll angle to be mounted during according to the current roll angle binding tests of model, calculating needs rotation
Angle, the then angle that the instruction rotation according to quadrant needs, tightens turnbuckle 8 afterwards in place, and model is compressed by pad 10,
Make the model conical surface 9 and balance secure fit, then lay down frock, and dummy head is loaded onto, roll angle installation.
When wind tunnel test needs the repeatedly roll angle of adjustment model, frock is reinstalled after having carried out once experiment, pressed
Adjusted to required roll angle according to the above method.
Specific implementation example of the invention is the foregoing is only, the scope of the present invention is not limited to.Any this area
Technical staff, the equivalent variations made on the premise of design of the invention and principle is not departed from, modification and with reference to belonging to
The scope of protection of the invention.
Unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (6)
1. a kind of roll angle measurement method of non-axis symmetry model in wind tunnel, it is characterised in that step is as follows：
The first step, designs in frock, the disc structure of an outwardly platform (5) centered on described frock main body, platform (5)
Portion's processing coordinates inner chamber (1) for coordinating with non-axis symmetry model in wind tunnel, on disk (2) and positioned at the outside of platform (5)
Processing observation window (4), platform (5) measures the plane of roll angle for providing quadrant；
Second step, determines the Working position of the outside column pin hole (3) on disk (2) and positioned at platform (5), it is ensured that frock with it is described
Model when being installed in place, during one of plateau levels of platform (5), the roll angle of model is 0 °, and marks the plane to be
Datum plane；
3rd step, inner chamber (1) is coordinated and therebetween by installed in pin by the assembling face of cylinder (7) insertion of described model
Pin in hole (3) is firmly connected；
4th step, determines that plane minimum with horizontal plane angle on platform installs quadrant as measurement plane, judges the plane
Whether on the basis of plane, if datum plane, then the instruction directly according to quadrant determines the current roll angle of model, otherwise,
Instruction according to quadrant is combined according to the position relationship between current measurement plane and datum plane, the current rolling of model is determined
Corner；
Whether 5th step, judgment models current roll angle needs roll angle to be mounted when being experiment, if so, then in current location
Assembling model and balance simultaneously lay down frock；Otherwise, the 6th step is turned；
6th step, calculates the angle for needing rotation, judges whether the angle can be rotated in place in current measurement plane, if can,
The angle that then the instruction rotation according to quadrant needs, in place after assembling model and balance and lay down frock；If current measurement is flat
Face can not be rotated in place, then rotating model and record the angle of rotation in the range of current measurement plane, reselect afterwards with
The minimum plane of horizontal plane angle installs quadrant as measurement plane, repeats the 6th step.
2. a kind of roll angle measurement method of non-axis symmetry model in wind tunnel, it is characterised in that step is as follows：
The first step, designs in frock, the disc structure of an outwardly platform (5) centered on described frock main body, platform (5)
Portion's processing coordinates inner chamber (1) for coordinating with non-axis symmetry model in wind tunnel, on disk (2) and positioned at the outside of platform (5)
Processing observation window (4), platform (5) measures the plane of roll angle for providing quadrant；
Second step, determines the Working position of the outside column pin hole (3) on disk (2) and positioned at platform (5), it is ensured that frock with it is described
Model when being installed in place, during one of plateau levels of platform (5), the roll angle of model is 0 °, and marks the plane to be
Datum plane；According to the position relationship between other planes and datum plane, determine that each plane can measure the model of roll angle
Enclose；
3rd step, inner chamber (1) is coordinated and therebetween by installed in pin by the assembling face of cylinder (7) insertion of described model
Pin in hole (3) is firmly connected；
4th step, the model of roll angle can be measured according to each plane in need model roll angle to be mounted when testing and second step
Enclose, it would be desirable to which the model roll angle of installation is in the plane of measurement range as measurement plane；
5th step, measurement plane is rotated to level and quadrant is installed, according between current measurement plane and datum plane
Position relationship combines the instruction according to quadrant, determines the current roll angle of model；
6th step, needs roll angle to be mounted during according to the current roll angle binding tests of model, calculate the angle for needing rotation,
The angle that then the instruction rotation according to quadrant needs, in place after assembling model and balance and lay down frock.
3. method according to claim 1 and 2, it is characterised in that：The determination of datum plane is accomplished in the following manner：
First, the insertion of the assembling face of cylinder (7) of model is coordinated into inner chamber (1), rotating model in the state that roll angle is 0 °, and
Rotary tooling makes a certain plane of platform be in horizontality；The model and frock that above-mentioned condition will be met are connected；Then
At least 2 column pin holes (3) are processed together with model on disk (2) and positioned at the outside of platform (5), it is above-mentioned in horizontality
Plane be datum plane.
4. method according to claim 1 and 2, it is characterised in that：Described platform is quadrangle or hexagon platform.
5. method according to claim 4, it is characterised in that：When platform is quadrangle, whether current measurement plane can
The basis for estimation being enough rotated in place is 45 ° of the angle ＜ of current measurement plane and the angle+needs rotation of horizontal plane.
6. method according to claim 4, it is characterised in that：When platform is hexagon, whether current measurement plane can
The basis for estimation being enough rotated in place is 30 ° of the angle ＜ of current measurement plane and the angle+needs rotation of horizontal plane.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765027A (en) * | 2019-03-06 | 2019-05-17 | 哈尔滨工业大学 | Quadrangular mechanism formula High Angle of Attack support system |
| CN113639956A (en) * | 2021-10-18 | 2021-11-12 | 中国空气动力研究与发展中心高速空气动力研究所 | Calibration device and calibration method for model inclination angle measurement device |
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| CN202735850U (en) * | 2012-07-26 | 2013-02-13 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel test model roll control device |
| CN103389198A (en) * | 2013-07-22 | 2013-11-13 | 中国航天空气动力技术研究院 | Measuring device for hypersonic wind tunnel rolling dynamic test |
| CN105444983A (en) * | 2015-12-15 | 2016-03-30 | 中国空气动力研究与发展中心高速空气动力研究所 | High speed wind tunnel model roll angle measuring device |
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| JPH07167737A (en) * | 1993-12-13 | 1995-07-04 | Nippon Koku Uchu Kogyokai | Twist angle measuring instrument of wind tunnel testing model |
| JP2006208395A (en) * | 2006-03-22 | 2006-08-10 | Tech Res & Dev Inst Of Japan Def Agency | Dynamic wind tunnel testing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765027A (en) * | 2019-03-06 | 2019-05-17 | 哈尔滨工业大学 | Quadrangular mechanism formula High Angle of Attack support system |
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| CN113639956A (en) * | 2021-10-18 | 2021-11-12 | 中国空气动力研究与发展中心高速空气动力研究所 | Calibration device and calibration method for model inclination angle measurement device |
| CN113639956B (en) * | 2021-10-18 | 2022-01-18 | 中国空气动力研究与发展中心高速空气动力研究所 | Calibration device and calibration method for model inclination angle measurement device |
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