CN109307579B - Projection type point distribution positioning device for aircraft ground vibration test - Google Patents
Projection type point distribution positioning device for aircraft ground vibration test Download PDFInfo
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- CN109307579B CN109307579B CN201811448823.5A CN201811448823A CN109307579B CN 109307579 B CN109307579 B CN 109307579B CN 201811448823 A CN201811448823 A CN 201811448823A CN 109307579 B CN109307579 B CN 109307579B
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- card
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- film strip
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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- Manufacturing & Machinery (AREA)
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- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The application discloses projection formula stationing positioner of aircraft ground vibration test includes: a film strip provided with an airfoil profile line or a plurality of typical positioning points, and marked with sensor arrangement points at predetermined positions on the film strip; the card holder is used for fixedly mounting the slide film; the card adjusting mechanism is used for installing the card support and can drive the card support to move and/or rotate; and the light source projection device is used for projecting the light beam to the airfoil surface of the aircraft on which the sensor is to be arranged through the airfoil profile line or the typical positioning point on the film strip.
Description
Technical Field
The application belongs to the field of structural dynamics test, and particularly relates to a projection type point distribution positioning device for an aircraft ground vibration test.
Background
In order to grasp the structural dynamics of the aircraft, it is necessary to perform a ground vibration test (all-aircraft ground resonance test) and correct the theoretical calculation model using the test results. During the test, a large number of sensors are arranged on the surface of the aircraft to measure the frequency and the vibration mode of the whole aircraft. In the conventional aircraft ground vibration test, a tester needs to measure and position the sensor points one by one according to the provided coordinates to make marks for the next step of pasting the sensors. The method for marking and positioning one by one can meet the test requirements generally, but if a structure similar to an inclined vertical fin is adopted, great difficulty is brought to the marking process, because the height of the inclined vertical fin is high, the operation of testers is very inconvenient after the inclined vertical fin is inclined outwards, and much time is consumed in the marking process.
Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present application provides a projection type stationing and positioning device for an aircraft ground vibration test.
The application discloses projection formula stationing positioner of aircraft ground vibration test includes:
the film comprises a film body, a sensor positioning module and a control module, wherein the film body is provided with an airfoil profile line or a plurality of typical positioning points, and the sensor positioning points are marked at preset positions on the film body;
the card holder is used for fixedly mounting the slide film;
the card adjusting mechanism is used for installing the card support and can drive the card support to move and/or rotate;
a light source projection device for projecting a light beam through an airfoil contour line or a typical location point on a film strip onto an aircraft airfoil on which a sensor is to be disposed.
According to at least one embodiment of the application, the card adjusting mechanism comprises an outer sleeve and a telescopic supporting rod, the outer sleeve is sleeved outside the telescopic supporting rod, can stretch along the axis direction of the outer sleeve and rotate around the axis, penetrates through the outer sleeve through a second screw to fix the telescopic supporting rod, and one end, far away from the outer sleeve, of the telescopic supporting rod is provided with a shaft sleeve;
the bottom that the card held in the palm is equipped with the pivot, the pivot setting is in the axle sleeve, can stretch out and draw back along its axis direction and rotate around its axis to pass the axle sleeve through first screw in order to fix the pivot.
According to at least one embodiment of the present application, the light source projection device is a high pressure projection lamp.
According to at least one embodiment of the present application, the airfoil profile line or typical positioning point is located in the film strip middle region, reduced by a predetermined scale relative to the aircraft airfoil.
According to at least one embodiment of the present application, the slide film is fixedly connected to the card holder by a bolt.
The application has at least the following beneficial technical effects:
the projection type point distribution positioning device for the ground vibration test of the aircraft can position the position of the sensor on the airfoil of the aircraft for the ground resonance test at one time and quickly, greatly improves the positioning efficiency and precision of the airfoil sensor in the ground vibration test of the aircraft, and meets the requirement of test precision.
Drawings
FIG. 1 is a diagram illustrating an effect of a projection-type stationing and positioning apparatus according to a first embodiment of the present application;
fig. 2 is a view of a slide film structure of the present application;
FIG. 3 is a view of the slide film and card holder configuration of the present application;
FIG. 4 is a schematic view of the card adjustment mechanism of the present application;
FIG. 5 is a schematic structural diagram of a projection type stationing and positioning device for a ground vibration test of an aircraft according to the present application;
reference numerals:
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.
The projection type stationing and positioning device for the ground vibration test of the aircraft of the present application is further described in detail with reference to fig. 1 to 5.
The application discloses projection formula stationing positioner of aircraft ground vibration test can include: a light source projection device 1, a slide film 2, a card holder 3, and a card adjusting mechanism 4.
The film strip 2 is provided with an airfoil profile 6 or a plurality of typical positioning points, and a sensor arrangement point 9 is marked at a preset position on the film strip 2; the card holder 3 is used for fixedly mounting the slide film 2; the card adjusting mechanism is used for installing the card support 3 and can drive the card support 3 to move and/or rotate; the light source projection device is used to project a light beam through the airfoil profile 6 or typical location points on the film strip 2 onto the aircraft airfoil 5 where the sensors are to be placed.
Specifically, the card adjusting mechanism may include an outer sleeve 11 and a telescopic support rod 12, wherein the outer sleeve 11 is sleeved outside the telescopic support rod 12 and can move along the axial direction thereof and rotate around the axial line; a second screw 8 passes through the outer sleeve 11 for fixing a telescopic strut 12, the telescopic strut 12 being provided with a bushing 14 at an end which can be remote from the outer sleeve 11. It will be appreciated that the telescopic strut 12 is used to adjust the card holder up and down height and steering.
The card holder 3 is provided with a rotating shaft 13, the rotating shaft 13 is partially positioned in a shaft sleeve 14 of the card adjusting mechanism 4, the rotating shaft 13 can move along the axial direction and rotate around the axial line, a first screw 7 penetrates through the shaft sleeve 14 for fixing the rotating shaft 13, and the card holder 3 is used for installing the film strip 2.
The film strip 2 is fixedly connected with the card holder 3, the film strip 2 is provided with an airfoil surface outline 6 or a typical positioning point, and is marked with a sensor arrangement point 9. The application is suitable for parts with smaller curvature and regular airfoil surfaces and the like.
The light source projection device 1 is used to project a light beam onto an aircraft airfoil 5 through an airfoil profile 6 or a typical positioning point on a slide film 2.
Advantageously, the light source projection device 1 is a high pressure projection lamp.
Advantageously, the airfoil profile 6 or typical positioning point is located in the middle region of the film strip 2, reduced by a predetermined ratio with respect to the aircraft airfoil 5. The reduction ratio can be in an integer ratio or any ratio.
Advantageously, the slide film 2 is fixedly connected to the card holder 3 by means of bolts.
The working principle is as follows:
a slide film for printing the outline of the wing surface and the position diagram of the sensor is made, the wing surface on the card is projected to the wing surface of the test airplane by a light source projection device (a high-pressure projection lamp and the like), the wing surface projected on the card is basically matched with the wing surface of the airplane through the outline size of the wing surface or the typical point positioning on the wing surface, and the position of the sensor projected on the card is marked on the surface of the airplane for the subsequent sticking of the sensor.
The calculation method comprises the following steps:
this application adopts the projection method, and the wing that the hypothesis slide film printed is 1 with aircraft wing proportion: n, when the positions of the sensors are marked on the airfoils like vertical tails, oblique vertical tails and the like, the placement method of the invention is as follows:
1) the film projector is shaped like a straight vertical tail and other wing surfaces, the film projector is vertical and is arranged in parallel with the vertical tail, and the light source projector is adjusted to be horizontally arranged. The film strip to vertical tail distance is L2, and the film strip to light source projection device distance L1 is calculated according to the following formula:
2) the angle alpha between the wing surface and the ground is formed by rotating the film strip through the card adjusting mechanism to form the angle alpha between the wing surface and the ground, the film strip is placed in parallel with the oblique vertical tail, and the projection direction of the light source projection equipment is adjusted to form the angle of 90-alpha between the light source projection equipment and the ground. The film strip to vertical tail distance is L2, and the film strip to light source projection device distance L1 is calculated according to the following formula:
the working process is as follows:
before the test is carried out, a film strip is prepared, and the outline lines or typical positioning points of the airfoil and the arrangement points of the sensors are printed on the film strip. In the test, the slide film is placed on the card support, and the card support is fixed on the card adjusting mechanism. And turning on a light source projection device, projecting the wing surface outline on the film on the aircraft wing surface to be marked, and matching the outlines of the wing surface outline and the aircraft wing surface outline by using a card adjusting mechanism. The positioning points of the sensors on the film are projected on the wing surface, and testers make marks one by using a marker pen or the like, or directly paste the sensors to the projection positions, so that the position determination of the sensor points is completed.
Has the advantages that:
the method can greatly improve the positioning efficiency and precision of the airfoil sensor in the ground vibration test of the aircraft, is particularly suitable for positioning vertical tails, inclined vertical tails and other parts which are higher in the ground or inconvenient to measure manually, and can provide a convenient and efficient method for marking the position of the sensor in the ground vibration test. The application can be used for positioning the position of the sensor on the airfoil of the aircraft for the ground resonance test at one time and quickly, the marked position of the sensor meets the requirement of test precision, and the sensor is particularly suitable for structures which are inconvenient to position manually, such as an oblique vertical fin, a T-shaped fin and the like.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (3)
1. The utility model provides an aircraft ground vibration test's projection formula stationing positioner which characterized in that includes:
the film strip (2) is provided with an airfoil profile (6) or a plurality of typical positioning points, and sensor arrangement points (9) are marked at preset positions on the film strip (2);
the card holder (3), the said card holder (3) is used for fixing and installing the said slide film (2);
the card adjusting mechanism is used for installing the card support (3) and can drive the card support (3) to move and/or rotate;
the device comprises a light source projection device (1), wherein the light source projection device (1) is used for projecting a light beam to an aircraft airfoil (5) to be provided with a sensor through an airfoil contour line (6) or a typical positioning point on a slide film (2);
the card adjusting mechanism comprises an outer sleeve (11) and a telescopic supporting rod (12), the outer sleeve (11) is sleeved outside the telescopic supporting rod (12), can move along the axis direction of the outer sleeve and rotate around the axis, penetrates through the outer sleeve (11) through a second screw (8) to fix the telescopic supporting rod (12), and a shaft sleeve (14) is arranged at one end, far away from the outer sleeve (11), of the telescopic supporting rod (12);
the bottom of the card holder (3) is provided with a rotating shaft (13), the rotating shaft (13) is arranged in the shaft sleeve (14), can move along the axis direction and rotate around the axis, and penetrates through the shaft sleeve (14) through a first screw (7) to fix the rotating shaft (13);
the outer profile (6) or typical positioning point of the wing surface is positioned in the middle area of the film strip (2) and is reduced by a preset proportion relative to the wing surface (5) of the aircraft.
2. The projection type stationing and positioning device for the ground vibration test of the aircraft according to claim 1, wherein the light source projection equipment (1) is a high-pressure projection lamp.
3. The projection type distribution positioning device for the ground vibration test of the aircraft according to claim 1, wherein the slide film (2) is fixedly connected with the card holder (3) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811448823.5A CN109307579B (en) | 2018-11-28 | 2018-11-28 | Projection type point distribution positioning device for aircraft ground vibration test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811448823.5A CN109307579B (en) | 2018-11-28 | 2018-11-28 | Projection type point distribution positioning device for aircraft ground vibration test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109307579A CN109307579A (en) | 2019-02-05 |
| CN109307579B true CN109307579B (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811448823.5A Active CN109307579B (en) | 2018-11-28 | 2018-11-28 | Projection type point distribution positioning device for aircraft ground vibration test |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113639765B (en) * | 2021-07-12 | 2023-09-05 | 中国航空工业集团公司沈阳飞机设计研究所 | Aircraft mount projection calibration method |
| CN113654810B (en) * | 2021-07-29 | 2022-11-29 | 奇瑞汽车股份有限公司 | Projection device and test stake placing method adopting same |
Citations (2)
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| CN105580563A (en) * | 2014-11-17 | 2016-05-18 | 广东美景园林建设有限公司 | Method and device for generating lawn pattern |
| CN108168070A (en) * | 2017-12-26 | 2018-06-15 | 珠海格力电器股份有限公司 | Equipment installation method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1683986A (en) * | 2004-04-12 | 2005-10-19 | 黄耕 | Laser perspective projection method and its device |
| CN2809669Y (en) * | 2005-04-20 | 2006-08-23 | 何志军 | Installation for projecting advertisement on ground by using street lamp to irradiate transparent picture |
| EP2453205A1 (en) * | 2010-11-11 | 2012-05-16 | Leica Geosystems AG | Construction and measuring device for measuring and marking points along contour lines running horizontally across a surface |
| CN207607665U (en) * | 2017-12-13 | 2018-07-13 | 中国航空工业集团公司成都飞机设计研究所 | A kind of pneumatic rudder face caliberating device of aircraft based on machine vision |
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- 2018-11-28 CN CN201811448823.5A patent/CN109307579B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105580563A (en) * | 2014-11-17 | 2016-05-18 | 广东美景园林建设有限公司 | Method and device for generating lawn pattern |
| CN108168070A (en) * | 2017-12-26 | 2018-06-15 | 珠海格力电器股份有限公司 | Equipment installation method and device |
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| CN109307579A (en) | 2019-02-05 |
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