CN113092000B - Calibration method of sheet type hinge moment balance with external bridge correction - Google Patents
Calibration method of sheet type hinge moment balance with external bridge correction Download PDFInfo
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- CN113092000B CN113092000B CN202110369449.5A CN202110369449A CN113092000B CN 113092000 B CN113092000 B CN 113092000B CN 202110369449 A CN202110369449 A CN 202110369449A CN 113092000 B CN113092000 B CN 113092000B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
- G01L25/003—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency for measuring torque
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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
- G01M9/062—Wind tunnel balances; Holding devices combined with measuring arrangements
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a calibration method of a sheet type hinge moment balance with an external bridge for correction, belongs to the field of wind tunnel pneumatic tests, and aims to solve the problem that the existing correction method of external bridge trimming signals of the sheet type hinge moment balance is complex. In the application, each component of the sheet type hinge moment balance is loaded through a loading point of a loading head, and a main item coefficient of each component of the sheet type hinge moment balance and an interference coefficient of other components (including an external bridge component) are obtained; loading the external bridge component through a wing loading device to obtain a main item of the external bridge component and an interference coefficient to each component of the sheet type hinge moment balance; and solving a balance working formula with the external bridge correction to finish the calibration of the chip hinge moment with the external bridge correction.
Description
Technical Field
The application relates to the technical field of wind tunnel pneumatic tests, in particular to a calibration method of a sheet type hinge moment balance with an external bridge correction. The invention realizes the calibration of the chip hinge moment balance with the external bridge correction, and is suitable for the accurate measurement of the hinge moment of the control surface of the aircraft with high-speed wind tunnel and large aspect ratio.
Background
The hinge moment balance is mainly used for measuring the hinge moment acting on an aircraft control surface (aileron and rudder) or a full-motion airfoil surface (horizontal tail and canard) model. At present, with the continuous development of aircraft technology, the aircraft that uses large aspect ratio is more and more common, and the precision requirement to hinge moment component measurement is higher and higher simultaneously. The high aspect ratio aircraft is characterized in that: the model has long wing, thin wing profile and poor wing rigidity, and is seriously deformed by stress in a wind tunnel test, thereby seriously influencing the accurate measurement of the hinge moment of the control surface.
Due to the limitation of the size of the model, the hinge moment balance has small geometric dimension, so that the hinge moment is a sheet type balance under most conditions, and the measurement accuracy of the sheet type hinge moment balance is low.
In recent years, intensive research on a sheet type hinge moment balance discovers that an external bridge is corrected in a wind tunnel test of a high-aspect-ratio aircraft model, and the method has a positive effect of improving the measurement accuracy of the hinge moment of a control surface. An external bridge signal correction method for a blade type hinge torque balance is disclosed, wherein main signals of all components of the blade type hinge torque balance are corrected by using external bridge signals, the corrected signals are substituted into a balance working formula, a measurement result of the blade type balance is obtained, and the measurement accuracy of the balance is improved. However, this method is inherently complex.
To this end, a new method and/or apparatus is urgently needed to solve the above problems.
Disclosure of Invention
The invention of this application aims at: aiming at the existing problems, the calibration method of the sheet type hinge moment balance with the external bridge correction is provided.
In order to achieve the purpose, the following technical scheme is adopted in the application:
a calibration method of a sheet type hinge moment balance with external bridge correction is disclosed, wherein the device adopted by the method comprises a calibration support rod, a wing model, the sheet type hinge moment balance, an external bridge, a sliding block, a loading head and a wing loading device;
which comprises the following steps:
(1) Fixedly connecting a conical end of a calibration support rod with a balance calibration frame, connecting a plane end of the calibration support rod with a wing model in a surface contact manner, integrally processing the wing model and a sheet type hinge moment balance, and arranging an external bridge at the joint of the hinge moment balance and the wing model; the sheet type hinge moment balance is in plane contact with the sliding block, positioned by the pin and fixedly connected; the loading head is provided with a boss, the sliding block is in surface contact with the loading head, and the sliding block is positioned through the inner bottom surface of the loading head and two sides of the boss; after the axial adjustment of the sliding block and the loading head is completed, the sliding block and the loading head are fixedly connected through a screw or a bolt; the wing model is provided with a loading hole, the wing loading device is connected with the wing model through the loading hole and can load the wing model, and the installation of the calibration device of the chip hinge moment balance with external bridge correction is completed;
(2) Loading each component of the sheet type hinge moment balance through a loading point of a loading head to obtain a main item coefficient of each component of the sheet type hinge moment balance and an interference coefficient of other components (including an external bridge component);
(3) Loading the wings through a wing loading device to obtain a main term coefficient of an external bridge component and an interference coefficient of each component of the sheet type hinge moment balance;
(4) And solving a balance working formula with external bridge correction.
The slide block is connected with the loading head in a sliding mode and can move axially along the balance relative to the loading head.
During calibration, the slider and the loading head are fixed relatively.
The conical end of the calibration support rod is connected with the balance calibration frame through a bolt, and the plane end of the calibration support rod is connected with the wing model through a bolt.
The boss on the loading head is convex along the section perpendicular to the axial direction of the loading head.
The upper end of the wing loading device penetrates through a loading hole in the wing model and is fixed by a nut.
The device adopted by the invention comprises a calibration support rod, a wing model, a sheet type hinge moment balance, an external bridge, a sliding block, a loading head and a wing loading device. Wherein the conical end of the calibration support rod is connected with the balance calibration frame and tightened through a bolt; the plane end of the calibration support rod is in surface contact with the wing model and is connected with the wing model through a bolt; the wing model and the sheet type hinge moment balance are integrally processed, and the external electric bridge is arranged at the joint of the hinge moment balance and the wing model; the sheet type hinge moment balance is in plane contact with the sliding block, the pin is positioned, and the pin is tightened through the screw; the loading head is provided with a boss, the sliding block is in surface contact with the loading head, and the sliding block is positioned through the bottom surface of the inner side of the loading head and two sides of the boss and can relatively move along the axial direction of the balance; after the axial adjustment of the sliding block and the loading head is finished, the sliding block and the loading head are fixedly connected through a screw or a bolt; the wing model is provided with a loading hole, the wing loading device is connected with the wing model through the loading hole (in a specific example, the wing model is provided with the loading hole, the upper end of the wing loading device penetrates through the loading hole on the wing model and is fixed by a nut), and then the installation of the calibrating device of the sheet type hinge moment balance with the external bridge correction is completed.
After the calibration device is installed, loading each component of the sheet type hinge moment balance through a loading point of a loading head to obtain a main item coefficient of each component of the sheet type hinge moment balance and an interference coefficient of other components (including an external bridge component); loading the external bridge component through a wing loading device to obtain a main item of the external bridge component and an interference coefficient to each component of the sheet type hinge moment balance; and solving a balance working formula with the external bridge correction to finish the calibration of the chip hinge moment with the external bridge correction.
The calibration method has the advantages of being simple to operate and convenient to use, the calibration method of the sheet type hinge moment balance can be simplified, and the measurement accuracy of the sheet type hinge moment balance is effectively improved. By adopting the method and the device, the working efficiency can be effectively improved, and the method and the device have good application value and social benefit.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a top view of a method of calibrating a flat hinged moment balance with external bridge correction according to an embodiment;
FIG. 2 is a front view of the method of calibrating a flat-blade hinge moment balance with external bridge correction of an embodiment.
Reference numerals: 1. the device comprises a calibration support rod, 2 a wing model, 3 a sheet type hinge moment balance, 4 a sliding block, 5 a loading head, 6 an external bridge, 7 and a wing loading device.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Example 1
Referring to fig. 1-2, the present embodiment provides a calibration method for a flat hinged moment balance with external bridge correction. The calibration device adopted by the method comprises a calibration support rod 1, a wing model 2, a sheet type hinge moment balance 3, an external bridge 6, a slide block 4, a loading head 5 and a wing loading device 7. Wherein, the cone end of the calibration support rod 1 is connected with the balance calibration frame and tightened by a bolt. As shown, the planar end of the calibration strut 1 is in surface contact with the airfoil model 2, and the two are connected by bolts. In this embodiment, the wing model 2 and the plate hinge moment balance 3 are integrally processed, the plate hinge moment balance 3 is disposed on one side of the wing model 2 close to the rudder, and the external bridge 6 is disposed at a connection position of the hinge moment balance and the wing model 2. The sheet type hinge moment balance 3 is in plane contact with the sliding block 4, and is positioned by a pin and tightened by a screw. The loading head 5 is provided with a boss, the sliding block 4 is in surface contact with the loading head 5, the sliding block 4 is positioned through the bottom surface of the inner side of the loading head 5 and two sides of the boss and can move axially along the balance, and after the sliding block 4 and the loading head 5 are axially adjusted, the sliding block 4 and the loading head 5 are fixedly connected through a screw or a bolt. The wing model 2 is provided with a loading hole, the wing loading device 7 is connected with the wing model 2 through the loading hole, and the upper end of the wing loading device 7 penetrates through the loading hole on the wing model 2 and is fixed by a nut. To this end, the assembly of the calibration device of the flat-hinged moment balance 3 with the correction of the external bridge 6 is completed.
Then, each component of the sheet type hinge moment balance 3 is loaded through the loading point of the loading head 5, and the main term coefficient of each component of the sheet type hinge moment balance 3 and the interference coefficient of other components including the external bridge 6 are obtained.
And loading the component of the external bridge 6 by the wing loading device 7 to obtain a main term of the component of the external bridge 6 and an interference coefficient of each component of the sheet type hinge moment balance 3.
And (3) a balance working formula (shown in the following table 1) with the correction of the external bridge 6 is obtained, and the calibration of the moment of the sheet hinge with the correction of the external bridge 6 is completed.
TABLE 1 balance formula
In table 1: m x Is the balance roll moment component, Z is the balance lateral force component, M j Is a moment component of a balance hinge, and W is an external bridge component; at calibration of the balance, G Z The weight of the loading head; during wind tunnel testing, G Z Is the rudder model weight.
In conclusion, the calibration method is simple to operate and convenient to use, and improves the working efficiency.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (3)
1. A calibration method of a sheet type hinge moment balance with an external bridge for correction is characterized in that the device adopted by the method comprises a calibration support rod, a wing model, the sheet type hinge moment balance, the external bridge, a sliding block, a loading head and a wing loading device;
which comprises the following steps:
(1) Fixedly connecting a conical end of a calibration support rod with a balance calibration frame, connecting a plane end of the calibration support rod with a wing model in a surface contact manner, integrally processing the wing model and a sheet type hinge moment balance, and arranging an external bridge at the connection position of the hinge moment balance and the wing model; the sheet type hinge moment balance is in plane contact with the sliding block, positioned by the pin and fixedly connected; the loading head is provided with a boss, the sliding block is in surface contact with the loading head, and the sliding block is positioned through the inner bottom surface of the loading head and two sides of the boss; after the axial adjustment of the sliding block and the loading head is finished, the sliding block and the loading head are fixedly connected through a screw or a bolt; the wing model is provided with a loading hole, the wing loading device is connected with the wing model through the loading hole and can load the wing model, and the installation of the calibration device of the sheet type hinge moment balance with the external bridge correction is completed;
(2) Loading each component of the sheet type hinge moment balance through a loading point of a loading head to obtain a main item coefficient of each component of the sheet type hinge moment balance and an interference coefficient of other components including an external bridge component;
(3) Loading the wing through a wing loading device to obtain a main term coefficient of an external bridge component and an interference coefficient of each component of the sheet type hinge moment balance;
(4) Solving a balance working formula with external bridge correction;
the sliding block is connected with the loading head in a sliding mode and can move axially along the balance relative to the loading head;
during calibration, the slide block and the loading head are relatively fixed;
the boss on the loading head is convex along the section perpendicular to the axial direction of the loading head.
2. The method for calibrating a blade-type hinge moment balance with external bridge correction according to claim 1, wherein the conical end of the calibrating strut is connected to the balance calibrating frame by a bolt, and the planar end of the calibrating strut is connected to the wing model by a bolt.
3. The method for calibrating a plate hinge moment balance with external bridge correction according to claim 1 or 2, wherein the upper end of the wing loading device passes through a loading hole on the wing model and is fixed by a nut.
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| CN202110369449.5A CN113092000B (en) | 2021-04-06 | 2021-04-06 | Calibration method of sheet type hinge moment balance with external bridge correction |
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| CN202110369449.5A CN113092000B (en) | 2021-04-06 | 2021-04-06 | Calibration method of sheet type hinge moment balance with external bridge correction |
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| CN113092000B true CN113092000B (en) | 2023-01-10 |
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| CN116608989A (en) * | 2023-07-18 | 2023-08-18 | 中国航空工业集团公司沈阳空气动力研究所 | Three-component hinge moment balance calibration device and method |
| CN118243335B (en) * | 2024-05-27 | 2024-07-16 | 中国航空工业集团公司沈阳空气动力研究所 | Calibrating device suitable for high-load wing part hinge moment balance |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2551103A1 (en) * | 1974-11-22 | 1976-05-26 | Pye Ltd | CALIBRATING A CRANE LOAD DISPLAY DEVICE |
| CN204988678U (en) * | 2015-07-21 | 2016-01-20 | 中国空气动力研究与发展中心高速空气动力研究所 | Piece formula hinge moment balance |
| CN112504554A (en) * | 2020-10-19 | 2021-03-16 | 中国空气动力研究与发展中心高速空气动力研究所 | Calibration method of six-component high-precision micro-rolling torque measuring device |
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2021
- 2021-04-06 CN CN202110369449.5A patent/CN113092000B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2551103A1 (en) * | 1974-11-22 | 1976-05-26 | Pye Ltd | CALIBRATING A CRANE LOAD DISPLAY DEVICE |
| CN204988678U (en) * | 2015-07-21 | 2016-01-20 | 中国空气动力研究与发展中心高速空气动力研究所 | Piece formula hinge moment balance |
| CN112504554A (en) * | 2020-10-19 | 2021-03-16 | 中国空气动力研究与发展中心高速空气动力研究所 | Calibration method of six-component high-precision micro-rolling torque measuring device |
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| 基于外置电桥修正法的大展弦比机翼片式铰链力矩天平应用技术研究;贾巍 等;《实验流体力学》;20170831;第31卷(第4期);第1-2节 * |
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