CN104977148A - Detecting device and detecting method for rotation center of angle-of-attack mechanism of wind tunnel test section - Google Patents

Detecting device and detecting method for rotation center of angle-of-attack mechanism of wind tunnel test section Download PDF

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Publication number
CN104977148A
CN104977148A CN201510459287.9A CN201510459287A CN104977148A CN 104977148 A CN104977148 A CN 104977148A CN 201510459287 A CN201510459287 A CN 201510459287A CN 104977148 A CN104977148 A CN 104977148A
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China
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location
detection
attack
measurement
angle
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CN201510459287.9A
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Chinese (zh)
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CN104977148B (en
Inventor
杜江
黄平
帅龙飞
杨光
孙东华
蒋于红
王定清
马斌
蒋晓林
祝俊川
林楠
何希
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四川省工业设备安装公司
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Publication of CN104977148A publication Critical patent/CN104977148A/en
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Abstract

The invention relates to a detecting device and a detecting method for a rotation center of an angle-of-attack mechanism of a wind tunnel test section. The detecting device comprises a supporting positioning structure with a horizontal extending structure. The supporting positioning structure is provided with a guiding structure which can make the horizontal extending structure move vertically. The extending end of the horizontal extending structure is provided with a detecting positioning structure, and a measuring device which is arranged on the bent cutter supporting plate of the angle-of-attack mechanism of the wind tunnel test section correspondingly with the detecting positioning structure and can perform positive and negative angle-of-attack arc movement of the bent cutter supporting plate. The detecting device and detecting method for the rotation center of the angle-of-attack mechanism of the wind tunnel test section realize more visual and quick measurement process and furthermore establish a standard with small error and high stability. Furthermore the detecting device and the detecting method have advantages of remarkably shortening an application period, reducing number of operators, reducing labor intensity, and greatly reducing cost at each aspect.

Description

The pick-up unit of test chamber angle of attack mechanism rotation center and method

Technical field

The present invention relates to pick-up unit and the method for test chamber angle of attack mechanism rotation center.

Background technology

In aerospace field, many flying qualities all need the simulation test acquisition first being carried out high-altitude and the outer space by wind-tunnel facilities.A crucial portion section in wind-tunnel is test section, and the core apparatus of the inside of test section is angle of attack mechanism, and can the effective utilization being detected wind-tunnel by angle of attack mechanism reliably for the development of aircraft be accurately shaped, and its effect is irreplaceable.Angle of attack mechanism is in the middle part of test section, and as shown in Figure 1, include the tulwar support plate 1 be made up of upper bracket 11, middle bracket 12 and lower bracket 13 in angle of attack mechanism, tulwar support plate 1 is held in upper and lower rail bracket.Aircraft is scaled be made into test model after, first be arranged on high-precision standard pole, the middle bracket 12 center pit internal fixtion of tulwar support plate 1 is injected again together with standard pole cover, getting on the right track under the oil cylinder pushing in frame, angle of attack mechanism along the accurate arc guide rail on upper and lower rail bracket in test section against the temporary punching discharged in wind-tunnel or continuous flow, do positive and negative angle of attack running accurately along the direction of arrow in Fig. 1.

The positive negative angle of attack running of above-mentioned tulwar support plate refers to be parallel to the vertical elevation of wind-tunnel axis as benchmark, round the center of circle be on wind-tunnel axis, the circular motion (as illustrated by the arrows in fig. 1) done in the vertical guide at wind-tunnel axis place.In test section installation process, its upper and lower guide rail bracket assembly precision is higher, under the arc guide rail clamping of angle of attack mechanism in its both sides, the rotation center done when circular arc runs gets over the place-centric close to theory, so, be installed on aerodynamic data that dummy vehicle in the middle bracket 12 of tulwar support plate 1 collected by sophisticated sensor in wind tunnel simulation flow field just more close to time of day, this is tested to from model the cycle that product is born by greatly shortening aircraft.

To sum up can find out, on wind-tunnel axis, after installation, all will survey out the actual position of angle of attack mechanism rotation center at test section, to check the registration of itself and theoretical center.If registration is overproof, then illustrate that the installation accuracy on test section relevant position does not reach requirement, just need analyze test section installation procedure and implement associated mounting location to reducing reinstalling and adjusting, until the deviation of angle of attack mechanism rotation center and theoretical center controls within the scope of designing requirement in registration bias direction for reason.

In existing detection method, DJ1 optical theodolite can be adopted to measure in conjunction with DS1 class precision spirit-leveling instrument.Data that the method is surveyed affect comparatively large by tulwar support plate location status, the rotary middle point simulated can only be informative.Thus, according to the result that this measuring method draws, can only be used as to judge that trend carrys out adjustment test section installment state by rule of thumb, be not data completely accurately.

A kind of method is also had to be positioned by plug to detect in tulwar support plate center pit.It is more convenient than upper one that the method operates, but because plug is often longer, the distortion that the forming residual stress itself contained causes is comparatively large, and the measurement declination error that this kind of mode implements caused may exceed first method, and the data drawn also can only be for reference.

Also have in addition a kind of method be occur in the recent period carry out testing with laser tracker.This metering system is accurate, the result drawn and time of day kissing right higher.But the method can only be used as the inspection of final products, the foundation being unsuitable for using for reference as the moment in test section adjustment is installed checks the process variations of generation.This is because this kind of mode image data point is numerous, also just will can go out result through computer to the data analysis gathered, the whole link cycle is long, can not meet in test section installation process the instantaneous demand measured.

Summary of the invention

The invention provides a kind of pick-up unit and method of test chamber angle of attack mechanism rotation center, make measuring process more directly perceived, simple and direct, and it is little to set up out error, the benchmark that stability is high, make engineering technical personnel be convenient to paying attention adjustment degree in force, and clearly can eliminate the measure that deviation should take.

The pick-up unit of test chamber angle of attack mechanism rotation center of the present invention, comprise the supporting and location structure with horizontal extensions, supporting and location structure is provided with the guide frame that horizontal extensions can be made to do vertically movement, the elongated end of horizontal extensions is provided with detection and location structure, and the tulwar support plate place that be arranged at test chamber angle of attack mechanism corresponding with described detection and location structure can make the measurement mechanism of positive negative angle of attack arcuate movement with tulwar support plate.

When detecting angle of attack mechanism rotation center, can realize the theoretical rotation center hypostazation of angle of attack mechanism by the detection and location structure of horizontal extensions elongated end, intuitively theoretical rotation center be show in the space of test chamber, its method set up is very simple and direct to be suitable for, precision is high, good stability, then measure detection and location structure and be located at the distance between the measurement mechanism on angle of attack mechanism tulwar support plate, and with designed distance comparison, within the scope of permissible error, whether judge whether the rotation of angle of attack mechanism has deviation according to measuring distance.Pick-up unit of the present invention greatly simplify measurement operation, and the times influence that can not be adjusted, can reuse, until complete the accurate adjustment of test section, compare existing various method and often adjust the complicated processes once all needing again to set up instrument, again centering, significantly decrease operating personnel, shorten the implementation cycle, reduce labour intensity, save cost, and this pick-up unit can be applied to the various determination across, the supersonic wind tunnel angle of attack mechanism centre of gyration in wind-tunnel, highly versatile.

Specifically, supporting and location structure in above-mentioned detection device can comprise the stationary base mount being connected with horizontal extensions, horizontal extensions comprises can along the take-up housing of the vertical guide frame movement on stationary base mount, and fixes with take-up housing and be provided with the sounding rod of described detection and location structure at elongated end.Such as, stationary base mount can be a kind of try square shape structure be made up of the L-square of joist steel upright and bottom, and the web surface of joist steel upright is vertical windward side in wind-tunnel, and web has described guide frame along its longitudinal centre line finishing.Take-up housing can move up and down adjustment height along the guide frame on stationary base mount.Located at the space three-dimensional of vertical position in horizontal, lengthwise position and take-up housing by stationary base mount, the detection and location structure on the sounding rod fixed with take-up housing just can be made to be positioned the theoretical rotation center place of angle of attack mechanism in test chamber space.

Preferably, described sounding rod is located by connecting with the cone matched and taper hole structure with take-up housing.Utilize the self-align and auto-lock function between cone and taper hole structure, accurate location can be realized very easily.

Further, horizontal extensions is provided with for keeping it stable and height-adjustable support bar.Support bar can be a termination screwed round steel type adjuster bar, is conducive to the stable and certain supplementary height regulating action to horizontal extensions.

Preferably, the detection and location structure of described sounding rod is sphere structure; Described measurement mechanism has the matrix of one end for being connected with tulwar support plate, and the other end is provided with the spherical measuring junction corresponding with the detection and location structure of sounding rod.Spheroid has the advantages that on end face, the radius of arbitrfary point is identical, therefore can determine very easily and detect the distance between the detection and location structure of sphere structure and the spherical measuring junction corresponding with detection and location structure.

Further, be located by connecting with the cone matched and taper hole structure between described measurement mechanism with tulwar support plate, can position measurement mechanism easily and efficiently and fix equally.

The method that the present invention adopts above-mentioned detection device to detect test chamber angle of attack mechanism rotation center, step comprises:

A. the detection and location structure of horizontal-extending in the supporting and location structure in above-mentioned detection device is placed in the theoretical rotary middle point of angle of attack mechanism on wind-tunnel axis by the three-dimensional adjustment in space;

B. the described measurement mechanism corresponding with the detection and location structure in supporting and location structure is located the center of the tulwar support plate being arranged at angle of attack mechanism;

C. measurement mechanism is made to make positive negative angle of attack arcuate movement with tulwar support plate, measure its distance in motion process and between the measurement point of detection and location structure, and by this distance and designed distance comparison, by the position of the detection and location structure of horizontal-extending in adjustment supporting and location structure, make the deviation of the spacing of the measurement point of itself and measurement mechanism designing in the scope allowed.

Further, when the detection and location structure of described horizontal-extending and measurement mechanism are sphere structure, make the spheroid horizontal-extending end points of the spheroid detection and location structure of horizontal-extending end be positioned at the theoretical rotary middle point of wind-tunnel, the horizontal-extending end points described in measurement and the distance between measurement mechanism measurement point are measure the distance between its two relative sphere.

The pick-up unit of test chamber angle of attack mechanism rotation center of the present invention and method, can by the theoretical rotation center hypostazation of angle of attack mechanism, make measuring process more directly perceived, simple and direct, and it is little to have set up out error, the benchmark that stability is high, greatly simplifies measurement operation, obviously shorten the implementation cycle, decrease operating personnel, reduce labour intensity, significantly save the cost of each side.And this pick-up unit can be applied to the multiple determination across, the supersonic wind tunnel angle of attack mechanism centre of gyration in wind-tunnel, highly versatile.

Below in conjunction with the embodiment of embodiment, foregoing of the present invention is described in further detail again.But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following example.Without departing from the idea case in the present invention described above, the various replacement made according to ordinary skill knowledge and customary means or change, all should comprise within the scope of the invention.

Accompanying drawing explanation

Fig. 1 is current test chamber angle of attack mechanism structural representation.

Fig. 2 is a kind of structural representation of the pick-up unit of test chamber angle of attack mechanism rotation center of the present invention.

Embodiment

The pick-up unit of test chamber angle of attack mechanism rotation center of the present invention as shown in Figure 2, comprise the supporting and location structure 4 with horizontal extensions, supporting and location structure 4 includes the stationary base mount connecting described horizontal extensions, and supporting and location structure 4 is provided with the guide frame that horizontal extensions can be made to do vertically movement.The rectangular chi shape of stationary base mount, is made up of the L-square of joist steel upright and bottom, and the web surface of joist steel upright is vertical windward side in wind-tunnel, web has along the accurately machined gathering sill of its longitudinal centre line.

Horizontal extensions comprises can along the take-up housing 6 of the vertical guide frame movement on stationary base mount, and to be located by connecting with the cone matched and taper hole structure with take-up housing 6 and to be provided with the sounding rod 5 of the detection and location structure 2 of sphere structure at elongated end; Also have and correspondingly with described detection and location structure 2 be arranged at tulwar support plate 1 place of test chamber angle of attack mechanism, the measurement mechanism 3 of positive negative angle of attack arcuate movement can be made with tulwar support plate 1.The inner chamber of take-up housing 6 is taper pilot hole structure, its end face not opening taper hole being processed with a guide ledges, for matching with the gathering sill on stationary base mount, can making the linear slide of microclearance wherein.The termination lower weld of take-up housing 6 perforate has a tapped pipe box, is connected with auxiliary slider seat 6 stablizes and height-adjustable support bar 7 by this pipe box.One end of sounding rod 5 is the cone adapted with the taper pilot hole on take-up housing 6; The other end is provided with the detection and location structure 2 of a sphere structure.

The measurement mechanism 3 corresponding with detection and location structure 2 has the matrix of one end for being connected with tulwar support plate 1, and inserts the center pit inner position of the middle bracket 12 of angle of attack mechanism tulwar support plate 1 equally with the cone matched and taper hole structure location by matrix.The other end of pick-up unit 3 is provided with the spherical measuring junction corresponding with the detection and location structure 2 of sounding rod 5.

When setting pick-up unit, the pedestal of first fixed support location structure 4: according to the technical parameter of design, extrapolate the position of rotation center on wind-tunnel axis of tulwar support plate in advance.On wind-tunnel axis after centering, namely set up out the rotary middle point of tulwar support plate, this process need by spirit-leveling instrument and transit, and process of establishing is simple.According to the position of this rotary middle point, with micrometer inside caliper carry out measuring, spacing is on the upper and lower wallboard face of nozzle section 9 inner chamber, determine the cross section that stationary base mount is located nozzle section 9 endpiece cavity planted agent, and mark the projection line in this cross section and the projection line of wind-tunnel axis, form longitudinal and transverse vertical right-angled intersection datum line; Then stationary base mount is installed on this cross section, make the longitudinal centre line of two of stationary base mount orthogonal facades, align with above-mentioned right-angled intersection datum line respectively, like this, stationary base mount is just located on horizontal and vertical, and to be on required cross section and to have kept aligning with wind-tunnel axis.

Again take-up housing 6 is installed to stationary base mount to get on temporarily, makes its guide ledges be in the gathering sill of stationary base mount, be supported in nozzle section 9 lower wall panels in support bar 7 precession pipe box.Then respectively with the upper and lower wallboard of nozzle section 9 for original bench mark, take-up housing 6 is fastening to (i.e. wind-tunnel center) on nozzle section 9 chamber central position along vertical gathering sill accurate adjustment, take-up housing 6, is located to applicable state rear support by adjustment support bar 7 height in nozzle section 9 lower wall panels on vertical.

Finally the vertebral foramen respective outer side edges of the conical section of sounding rod 5 and take-up housing 6 is installed, the center pit of matrix one end of measurement mechanism 3 and the middle bracket 12 of angle of attack mechanism tulwar support plate fixedly mounts.At this moment, namely the detection and location structure 2 of sounding rod 5 elongated end is in the theoretical rotation center when tulwar support plate angle of attack operates.

In the process detecting angle of attack mechanism rotation center, on the stroke that can rotate at angle of attack mechanism, pause in uniform selection 3 ~ 5 positions, air line distance between the theoretical rotary middle point place measuring detection and location structure 2 with internal diameter thousand points of bars 8 and the spherical measuring junction of measurement mechanism 3 being arranged in tulwar support plate middle bracket 12 center pit, compare with design size, check its deviation whether in allowed band, and accurately can infer the adjustment direction of angle of attack mechanism offset correction accordingly.

According to adopting the pick-up unit of the present embodiment and method, the cost that the installation of test chamber and check property adjustment process produce is analyzed, its financial cost saves nearly 20% than traditional approach, also significantly decrease operating personnel simultaneously, shorten the implementation cycle, and significantly improve the accuracy of detection.

Claims (8)

1. the pick-up unit of test chamber angle of attack mechanism rotation center, it is characterized by: comprise the supporting and location structure (4) with horizontal extensions, supporting and location structure (4) is provided with the guide frame that horizontal extensions can be made to do vertically movement, the elongated end of horizontal extensions is provided with detection and location structure (2), and tulwar support plate (1) place that be arranged at test chamber angle of attack mechanism corresponding with described detection and location structure (2) can make the measurement mechanism (3) of positive negative angle of attack arcuate movement with tulwar support plate (1).
2. pick-up unit as claimed in claim 1, it is characterized by: described supporting and location structure (4) comprises the stationary base mount being connected with horizontal extensions, horizontal extensions comprises can along the take-up housing (6) of the vertical guide frame movement on stationary base mount, and fix with take-up housing (6), and be provided with the sounding rod (5) of described detection and location structure (2) at elongated end.
3. pick-up unit as claimed in claim 2, is characterized by: described sounding rod (5) is located by connecting with the cone matched and taper hole structure with take-up housing (6).
4. pick-up unit as claimed in claim 1, is characterized by: be provided with on horizontal extensions for keeping it stable and height-adjustable support bar (7).
5. the pick-up unit as described in one of claim 2 to 4, is characterized by: the detection and location structure (2) of described sounding rod (5) is sphere structure; Described measurement mechanism (3) has the matrix of one end for being connected with tulwar support plate (1), and the other end is provided with the spherical measuring junction corresponding with the detection and location structure (2) of sounding rod (5).
6. pick-up unit as claimed in claim 5, is characterized by: be located by connecting with the cone matched and taper hole structure between described measurement mechanism (3) with tulwar support plate (1).
7. the detection method of test chamber angle of attack mechanism rotation center, is characterized by:
A. the detection and location structure (2) of upper for the supporting and location structure (4) in described for one of claim 1 to 6 pick-up unit horizontal-extending is placed in the theoretical rotary middle point of angle of attack mechanism on wind-tunnel axis by the three-dimensional adjustment in space;
B. the center of the tulwar support plate being arranged at angle of attack mechanism is located by with the described measurement mechanism (3) corresponding with the detection and location structure (2) in supporting and location structure;
C. measurement mechanism (3) is made to make positive negative angle of attack arcuate movement with tulwar support plate, measure its distance in motion process and between the measurement point of detection and location structure (2), and by this distance and designed distance comparison, by the position of the detection and location structure (2) of the upper horizontal-extending of adjustment supporting and location structure (4), make the deviation of the spacing of the measurement point of itself and measurement mechanism (3) designing in the scope allowed.
8. detection method as claimed in claim 7, it is characterized by: when the detection and location structure (2) of described horizontal-extending and measurement mechanism (3) are sphere structure, make the spheroid horizontal-extending end points of the spheroid detection and location structure (2) of horizontal-extending end be positioned at the theoretical rotary middle point of wind-tunnel, the detection and location structure (2) of measurement and the horizontal-extending described in comparison is measure the distance between its two relative sphere with the distance between measurement mechanism (3) measurement point.
CN201510459287.9A 2015-07-30 2015-07-30 The detection means and method of test chamber angle of attack mechanism pivot CN104977148B (en)

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CN105157949A (en) * 2015-10-16 2015-12-16 中国空气动力研究与发展中心低速空气动力研究所 Model attack angle mechanism
CN105890864A (en) * 2016-05-24 2016-08-24 湖北三江航天红阳机电有限公司 Yawing mechanism
CN106644361A (en) * 2016-09-30 2017-05-10 中国空气动力研究与发展中心高速空气动力研究所 Simple method for measuring transonic wind tunnel test section space flow field symmetry
CN106644361B (en) * 2016-09-30 2018-12-28 中国空气动力研究与发展中心高速空气动力研究所 A kind of simple and easy method measuring transonic wind tunnel test section space flow field symmetry
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CN109211515A (en) * 2018-08-06 2019-01-15 中国航天空气动力技术研究院 Model in wind tunnel posture caliberating device and scaling method

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