CN113834626B - Six-component high-torque balance with unmatched loads - Google Patents
Six-component high-torque balance with unmatched loads Download PDFInfo
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- CN113834626B CN113834626B CN202110997608.6A CN202110997608A CN113834626B CN 113834626 B CN113834626 B CN 113834626B CN 202110997608 A CN202110997608 A CN 202110997608A CN 113834626 B CN113834626 B CN 113834626B
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The invention belongs to the technical field of wind tunnel aerodynamic force measuring devices, and particularly relates to a six-component high-torque balance with unmatched loads, which comprises the following components: the device comprises a model connecting piece (1), a measuring element assembly (11) and a fixed connecting piece (6); the measuring element assembly (11) is arranged between the model connecting piece (1) and the fixed connecting piece (6); the measuring element assembly (11) comprises: a moment measuring element, a first force measuring element, a second force measuring element, a first transition (8), a second transition (9) and a third transition (10); the tail end of the first transition section (8), the starting end of the second transition section (9), the tail end of the second transition section (9) and the starting end of the third transition section (10) are arranged in an end-to-end connection; the moment measuring elements are arranged at the beginning end of the first transition section (8), the first force measuring elements are arranged at the beginning end and the tail end of the second transition section (9), and the second force measuring elements are arranged at the tail end of the third transition section (10).
Description
Technical Field
The invention belongs to the technical field of wind tunnel aerodynamic force measuring devices, and particularly relates to a six-component high-torque balance with unmatched loads.
Background
At present, an internal six-component rod balance is commonly adopted in wind tunnel force measurement tests, and measuring elements of the balance are symmetrically arranged in front of and behind a balance calibration center, and the common characteristics are that: the balance calibration center coincides with the model press center or the distance is smaller, the matching performance of the component loads of the balance is better, the force is larger than the moment load, and the ratio of the force to the moment load is different from several to tens. For the case that the balance calibration center is far from the model press center, the balance bears a large moment load, but the force load of the balance is usually smaller, so that the ratio of the moment to the force load of the balance is larger. For wind tunnel tests with large moment load and large moment-to-force load ratio, the internal six-component rod balance cannot meet the measurement requirements of small force load and large moment load, so that the measurement of large moment load and small force load of a model in the wind tunnel test is difficult.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a six-component high-torque balance with unmatched loads, and solves the problems of high model torque load and difficult measurement of small force load in a wind tunnel test.
The invention provides a six-component high-torque balance with unmatched loads, which comprises the following components: the device comprises a model connecting piece, a measuring element assembly and a fixed connecting piece;
the measuring element assembly is arranged between the model connecting piece and the fixed connecting piece;
the measuring element assembly includes: a moment measuring element, a first force measuring element, a second force measuring element, a first transition section, a second transition section, and a third transition section;
the tail end of the first transition section, the starting end of the second transition section, the tail end of the second transition section and the starting end of the third transition section are connected end to end with each other to form a serial structure;
the moment measuring element is arranged at the beginning end of the first transition section, the first force measuring element is arranged at the beginning end and the tail end of the second transition section, and the second force measuring element is arranged at the tail end of the third transition section.
As one of the improvements of the above-described aspects, the torque measuring element includes: pitch and roll measurement elements and yaw measurement elements;
the first force measuring element comprises a lateral force Z component measuring element and an axial force X component measuring element;
the second force measuring element comprises a normal force Y component measuring element;
the initial end of the first transition section is connected with the model connecting piece through a pitching and rolling measuring element and a yawing measuring element which are arranged on the initial end of the first transition section, and the pitching and rolling measuring element and the yawing measuring element are circumferentially distributed;
the left side and the right side of the starting end of the second transition section are respectively provided with a lateral force Z component measuring element; the upper side and the lower side of the tail end of the second transition section are respectively provided with an axial force X component measuring element;
and at least one plurality of groups of hyperstatic beams are sleeved on the third transition section and sleeved in the fixed connecting piece to form an integral non-detachable spoke type structure, and the at least one plurality of groups of hyperstatic beams are close to the fixed connecting piece.
As an improvement of the foregoing aspect, the pitch and roll measurement element further includes: a first measuring element and a second measuring element; the first measuring element and the second measuring element jointly measure a pitching moment Mz component load and a rolling moment Mx component load of the pneumatic load;
the yaw measurement element further includes: a third measuring element and a fourth measuring element; wherein the third measuring element and the fourth measuring element measure the yaw moment My component load of the aerodynamic load together;
the first measuring element, the second measuring element, the third measuring element and the fourth measuring element are distributed at 0 degrees in the circumferential direction, and the first measuring element, the second measuring element, the third measuring element and the fourth measuring element are all arranged at the starting end of the first transition section.
As one of the improvements of the above technical solutions, the lateral force Z component measuring element is used for measuring the lateral force Z component load of the pneumatic load;
the axial force X component measuring element is used for measuring the axial force X component load of the pneumatic load.
As one of the improvement of the technical scheme, the pitch and roll measuring element, the yaw measuring element, the lateral force Z component measuring element, the axial force X component measuring element and the normal force Y component measuring element are respectively provided with resistance strain gauges to form a Wheatstone full bridge to form a measuring circuit.
As one of the improvements of the technical scheme, the cross section of the second transition section is in a cylindrical structure, the left side and the right side of the initial end of the second transition section along the horizontal direction are provided with first L-shaped platforms, and the upper side and the lower side of the tail end of the second transition section along the vertical direction are respectively provided with second L-shaped platforms;
each first L-shaped platform is provided with a lateral force Z component measuring element; each second L-shaped platform is provided with an axial force X component measuring element;
the lateral force Z component measuring element and the axial force X component measuring element are of a multi-piece hyperstatic beam structure.
As one of the improvements of the technical scheme, the lateral force Z component measuring element comprises 4 overstatic beams which are arranged in a left-right symmetrical manner and are arranged in a superposition manner;
the axial force X component measuring element comprises 4 overstatic beams which are arranged in an overlapping mode and are symmetrically arranged up and down.
As one of the improvements of the above technical solution, in the spoke-type structure, the third transition section is an inner circle, the fixed connecting piece is an outer circle, a plurality of groups of overstatic beams distributed circumferentially are arranged between the inner circle and the outer circle of the spoke-type structure, a plurality of groups of overstatic beams on the same section are distributed in a "m" -shaped structure, and at least one group of overstatic beams distributed circumferentially are arranged on the same section along the axis direction in a common distribution manner;
of 8 groups of hyperstatic beams distributed in a'm' -shape, 4 groups of hyperstatic beams positioned at the 'X' -shape position are used as normal force Y component measuring elements 7, namely measuring beams, for measuring pneumatic load of normal force Y components;
4 groups of hyperstatic beams positioned at the cross-shaped positions are used as supporting beams to play a supporting role.
The measuring element assembly specifically includes: the normal force Y component measuring element, the pitching moment Mz component measuring element (first measuring element), the axial force X component measuring element, the rolling moment Mx component measuring element (second measuring element), the lateral force Z component and the yaw moment My component measuring element, wherein the pitching moment Mz component measuring element (first measuring element), the rolling moment Mx component measuring element (second measuring element) and the yaw measuring element are arranged close to a model connecting piece as moment measuring elements, the design center of the whole balance is arranged at the center position of the measuring unit, the lateral force Z component measuring element and the axial force X component measuring element are connected with the moment measuring element, the axial force X component measuring element is followed by the normal force Y component measuring element, and the balance integral structure adopts a serial connection mode, so that the fixed end of the former measuring element is the free end of the latter measuring element. And a resistance strain gauge is stuck on each measuring element of the balance to form a Wheatstone bridge, and the resistance of the Wheatstone bridge is changed after the strain gauge is loaded so that the Wheatstone bridge loses electric balance to generate voltage output, and a relation between load and voltage output is established.
Compared with the prior art, the invention has the beneficial effects that:
1. the device well solves the problem that the force and the moment load are seriously unmatched under the condition of large moment, and realizes the accurate measurement of the pneumatic load of the test model in the wind tunnel;
2. the measuring element assembly adopts a serial structure, is divided into three sections of measuring elements, and utilizes each corresponding measuring element to respectively measure the pneumatic load of a certain component, so that the technical problems of large balance moment and small force are solved;
3. in the device, the lateral force Z component measuring element and the axial force X component measuring element which are provided with a plurality of hyperstatic beam structures are adopted to correspondingly measure the lateral force and the axial force of the pneumatic load, the moment load of the balance is 3000N.m, the ratio of the moment to the force is 3:1, the ratio of the moment to the force of the traditional conventional balance does not appear, and the sensitivity of each measuring element is improved under the condition that the overall rigidity of the balance is kept unchanged basically;
4. in the device, the normal force Y component measuring piece with a spoke type structure is adopted, so that the device can resist larger bending moment load and can measure larger or smaller force load; in the invention, the axial length of the spoke type structure is increased to the greatest extent in the installation space of the test model, and a plurality of groups of hyperstatic beam structures are arranged between the inner circle and the outer circle of the spoke type structure and are distributed in a shape of Chinese character 'mi'; the increase of the axial length of the spoke type structure further improves the overall rigidity of the balance, and can effectively reduce the interference of a large moment load on an hyperstatic beam; the hyperstatic beam at the X-shaped position in the'm' -shaped layout structure is used as a measuring beam, so that the interference of other component loads at the measuring element is further reduced.
Drawings
FIG. 1 is a front view of a six-component high torque balance with load mismatch provided by the present invention;
FIG. 2 is a top view of a six-component high torque balance with load mismatch provided by the present invention;
FIG. 3 is a three-dimensional view of a six-component high-torque balance with load mismatch provided by the present invention;
FIG. 4 is a three-dimensional cross-sectional view of a six-component high-torque balance with load mismatch provided by the present invention;
FIG. 5 is a cross-sectional view A-A of FIG. 1;
FIG. 6 is a sectional view B-B of FIG. 1;
FIG. 7 is a cross-sectional view of C-C of FIG. 1;
FIG. 8 is a D-D sectional view of FIG. 1;
FIG. 9 is a sectional view of E-E of FIG. 1;
FIG. 10 is a cross-sectional F-F view of FIG. 2;
fig. 11 is a left side view of fig. 1.
Reference numerals:
1. model connection 2, pitch and roll measuring element
3. Yaw measuring element 4, lateral force Z component measuring element
5. Axial force X component measuring element 6, fixed connection
7. Normal force Y component measuring element
21. First measuring element 22, second measuring element
31. Third measuring element 32, fourth measuring element
8. First transition section 9, second transition section
10. Third transition 11, measuring element assembly
Detailed Description
The invention will now be further described with reference to the accompanying drawings and examples.
As shown in fig. 1, 2, 3, 4 and 11, the invention provides a six-component high-torque balance with mismatched loads, which is a hollow steel piece integral cylindrical structure; it comprises the following steps: a model connection 1, a measuring element assembly 11 and a fixed connection 6;
the measuring element assembly 11 is arranged between the model connection 1 and the fixed connection 6; wherein each component of the measuring element assembly 11 is capable of measuring a component of the pneumatic load, solving the problems of large balance moment and small force load. The end part of the model connecting piece 1 is fixedly connected with an external model to be tested in a flange mode through 12M 10 high-strength bolts; the end part of the fixed connecting piece 6 of the balance is fixedly connected with an external wind tunnel supporting system in a flange connection mode through 12M 18 high-strength bolts.
The measuring element assembly 11 comprises: a moment measuring element, a first force measuring element, a second force measuring element, a first transition 8, a second transition 9 and a third transition 10;
the tail end of the first transition section 8, the starting end of the second transition section 9, the tail end of the second transition section 9 and the starting end of the third transition section 10 are arranged end to end with each other to form a serial structure;
moment measuring elements are provided at the beginning of the first transition 8, first force measuring elements are provided at the beginning and end of the second transition 9, and second force measuring elements are provided at the end of the third transition 10.
As shown in fig. 3, 4, 5, 6, 7, the torque measuring element comprises: a pitch and roll measurement element 2 and a yaw measurement element 3;
as shown in fig. 6 and 7, the first force measuring element comprises a lateral force Z component measuring element 4 and an axial force X component measuring element 5;
as shown in fig. 8, the second force measuring element comprises a normal force Y component measuring element 7;
the initial end of the first transition section 8 is connected with the model connecting piece 1 through a pitching and rolling measuring element 2 and a yawing measuring element 3 which are arranged on the initial end, and the pitching and rolling measuring element 2 and the yawing measuring element 3 are circumferentially distributed;
as shown in fig. 1, 4 and 5, the left and right sides of the start end of the second transition section 9 are respectively provided with a lateral force Z component measuring element 4; the upper side and the lower side of the tail end of the second transition section 9 are respectively provided with an axial force X component measuring element 5;
as shown in fig. 1, 6 and 7, at least one plurality of groups of hyperstatic beams are sleeved on the third transition section 10, and are sleeved in the fixed connecting piece 6 to form an integral non-detachable spoke type structure, and the at least one plurality of groups of hyperstatic beams are close to the fixed connecting piece 6.
As shown in fig. 1, 2, 9 and 10, the cross section of the second transition section 9 is in a cylindrical structure, the left and right sides of the initial end of the second transition section 9 along the horizontal direction are provided with a first L-shaped platform, and the upper and lower sides of the final end of the second transition section 9 along the vertical direction are respectively provided with a second L-shaped platform; the vertical paper surface in fig. 2 is outward to the right in the horizontal direction, and the vertical paper surface is inward to the left in the horizontal direction; the upper side in fig. 2 is the upper side in the vertical direction, and the lower book is the lower side in the vertical direction;
a lateral force Z component measuring element 4 is arranged on each first L-shaped platform; an axial force X component measuring element 5 is arranged on each second L-shaped platform;
the lateral force Z component measuring element 4 and the axial force X component measuring element 5 are of a multi-piece hyperstatic beam structure.
Wherein, as shown in fig. 4, the lateral force Z component measuring element 4 comprises 4 overstatic beams which are arranged in a left-right symmetrical manner and are arranged in a superimposed manner; the lateral force Z component measuring element 4 is used for measuring the lateral force Z component load of the pneumatic load;
as shown in fig. 5, the axial force X component measuring element 5 includes 4 superimposed hyperstatic beams arranged symmetrically up and down. The axial force X component measuring element 5 is used for measuring the axial force X component load of the pneumatic load.
The pitch and roll measurement element 2 further comprises: a first measuring element 21 and a second measuring element 22; wherein the first measuring element 21 and the second measuring element 22 together measure a pitch moment Mz component load and a roll moment Mx component load of the aerodynamic load;
the yaw measuring element 3 further comprises: a third measuring element 31 and a fourth measuring element 32; wherein the third measuring element 31 and the fourth measuring element 32 together measure the yaw moment My component load of the aerodynamic load;
the first measuring element 21, the second measuring element 22, the third measuring element 31 and the fourth measuring element 32 are distributed at 90 degrees in the circumferential direction, all being arranged at the beginning of the first transition 8.
Wherein each of the first measuring element 21, the second measuring element 22, the third measuring element 31 and the fourth measuring element 32 has a thickness of 6mm and a height of 20mm.
And resistance strain gauges are respectively arranged on the pitching and rolling measuring element 2, the yawing measuring element 3, the lateral force Z component measuring element 4, the axial force X component measuring element 5 and the normal force Y component measuring element 7 to form a Wheatstone full bridge to form a measuring circuit.
In order to ensure the whole rigidity of the balance axial force X component and the lateral force Z component and the proper sensitivity output of the patch area, based on the adopted multi-piece hyperstatic beam structure form, the lengths of 8 pieces of hyperstatic beams in the transverse and longitudinal directions are 25mm, the thickness is 1mm and the width is 60mm due to the fact that the loads of the lateral force Z and the normal force Y are the same.
As shown in fig. 6, 7 and 8, in the spoke-type structure, the third transition section 10 is an inner circle, the fixed connecting piece 6 is an outer circle, a plurality of groups of overstatic beams distributed circumferentially are arranged between the inner circle and the outer circle of the spoke-type structure, a plurality of groups of overstatic beams on the same cross section are distributed in a'm' -shaped structure, 8 groups of overstatic beams distributed circumferentially are distributed on the same cross section along the axis direction, and in the embodiment, 80 groups of overstatic beams are distributed on the same cross section along the axis direction in total; as shown in fig. 5, a total of 10 groups of hyperstatic beams are sleeved at the tail end of the third transition section 10, and every 5 groups of hyperstatic beams are taken as one group to form two groups, and the two groups are spaced apart, so that one group of hyperstatic beams close to the fixed connecting piece 6 can realize the measurement of the normal force Y component load of the pneumatic load.
Of 8 groups of hyperstatic beams distributed in a'm' -shape, 4 groups of hyperstatic beams positioned at the 'X' -shape position are used as normal force Y component measuring elements 7, namely measuring beams, for measuring pneumatic load of normal force Y components;
4 groups of hyperstatic beams positioned at the cross-shaped positions are used as supporting beams to play a supporting role.
The first measuring element 21 and the second measuring element measure the pitching moment Mz component together, the third measuring element 31 and the fourth measuring element 32 measure the yaw moment My component together, the four measuring elements are used as moment measuring elements, the moment measuring elements are arranged close to the model connecting piece 1, the center of the whole balance is arranged at the center position of the measuring element assembly 11, two lateral force Z component measuring elements 4 and two axial force X component measuring elements 5 are connected with the moment measuring elements, the normal force Y component measuring element 7 is connected with the moment measuring elements, and the fixed end of the former measuring element is the free end of the latter measuring element because the balance is in a serial connection mode. Wherein the lateral force Z component measuring element 4 is used for measuring the lateral force Z component of the pneumatic load; an axial force X component measuring element 5 for measuring the axial force X component of the aerodynamic load. A lateral force Z component measuring element 4 and two axial force X component measuring elements 5 serve as force measuring elements.
The torque measuring element includes: a first measuring element 21, a second measuring element 22, a third measuring element 31 and a fourth measuring element 32; a pitch moment Mz component, a roll moment Mx component, and a yaw moment My component for measuring aerodynamic loads; a lateral force Z component measuring element 4 and two axial force X component measuring elements 5 as force measuring elements for measuring the axial force X component and the lateral force Z component, respectively; the normal force Y component measuring element 7 is used as a normal force measuring element for measuring a normal force Y component;
the pitch and roll measuring element 2, the yaw measuring element 3, the lateral force Z component measuring element 4, the axial force X component measuring element 5 and the normal force Y component measuring element 7 are respectively provided with resistance strain gauges, the three measuring elements are utilized to form a Wheatstone bridge, namely, the resistance strain gauges are respectively stuck on the normal force, the pitch moment, the lateral force, the yaw moment, the axial force and the roll moment measuring elements to form a Wheatstone full bridge to form a measuring circuit, the 6 bridges are independent of each other, when pneumatic load of a certain component acts independently, only the bridge of the component has larger output, and the bridges of other components basically have no output. And (3) sticking a resistance strain gauge on each measuring element of the balance to form a Wheatstone bridge, and using the resistance of the strain gauge to change after loading to ensure that the formed Wheatstone bridge loses electric balance, so as to generate voltage output (y), and establishing a relation between load and voltage output:
y＝β*Fi；
where Fi is a standard load applied, and represents an input amount, y is a voltage value generated by applying the standard load, and represents an output amount, and β is a correlation matrix coefficient between y and Fi.
In the wind tunnel test, y 'is a voltage value generated by the pneumatic load, and represents an input quantity, fi' is the pneumatic load required to be calculated by the formula Fi '=αy', and represents an output quantity. Alpha is the inverse matrix coefficient of beta.
The balance adopts a serial structure, and the force measuring element and the moment measuring element are respectively arranged at different positions of the balance body and are used for measuring different moment components and load force components.
The balance adopts a multi-piece hyperstatic beam structure, so that the integral rigidity of the balance is ensured, and each measuring element has proper sensitivity output.
The fixed connecting piece 6 is rigidly connected with the wind tunnel bracket. The balance is in a serial connection type, the fixed end of the former measuring element is the free end of the latter measuring element, and in order to ensure the minimum mutual interference among the measuring elements, the length of a transition section between the connecting measuring units is maximized under the condition of allowing design conditions.
In the wind tunnel test process, the aerodynamic load acting on the aircraft model enables the normal force Y component and the pitching moment Mz component measuring element of the high-torque balance, the lateral force Z component and the yawing moment My component measuring element, the axial force X measuring element and the rolling moment Mx measuring element to generate corresponding deformation, so that the Wheatstone bridge formed by strain gauges stuck on the measuring elements is out of balance, electric signal output is generated, the pneumatic load on the model is calculated by using a balance static calibration obtaining relation formula, and the accurate measurement of the pneumatic load of the test model is realized.
In this embodiment, the load of the balance can be measured by using the device of the present invention, specifically as follows: the normal force Y component is 30000N; the pitch moment Mz component is 3000n.m; the axial force X component is 1000N; the rolling moment Mx component is 500N.m; the lateral force Z component is 1000N; the yaw moment My component is 3000n.m.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and are not limiting. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the appended claims.
Claims (6)
1. A six-component high torque balance with load mismatch, comprising: the device comprises a model connecting piece (1), a measuring element assembly (11) and a fixed connecting piece (6);
the measuring element assembly (11) is arranged between the model connecting piece (1) and the fixed connecting piece (6);
the measuring element assembly (11) comprises: a moment measuring element, a first force measuring element, a second force measuring element, a first transition (8), a second transition (9) and a third transition (10);
the tail end of the first transition section (8), the starting end of the second transition section (9), the tail end of the second transition section (9) and the starting end of the third transition section (10) are arranged in an end-to-end connection to form a serial structure;
the moment measuring element is arranged at the initial end of the first transition section (8), the first force measuring element is arranged at the initial end and the tail end of the second transition section (9), and the second force measuring element is arranged at the tail end of the third transition section (10);
the torque measuring element includes: a pitch and roll measurement element (2) and a yaw measurement element (3);
the first force measuring element comprises a lateral force Z component measuring element (4) and an axial force X component measuring element (5);
the second force measuring element comprises a normal force Y component measuring element (7);
the initial end of the first transition section (8) is connected with the model connecting piece (1) through a pitching and rolling measuring element (2) and a yawing measuring element (3) which are arranged on the initial end, and the pitching and rolling measuring element (2) and the yawing measuring element (3) are circumferentially distributed;
the left side and the right side of the starting end of the second transition section (9) are respectively provided with a lateral force Z component measuring element (4);
the upper side and the lower side of the tail end of the second transition section (9) are respectively provided with an axial force X component measuring element (5);
at least one plurality of groups of hyperstatic beams are sleeved on the third transition section (10), and are sleeved in the fixed connecting piece (6) to form an integral non-detachable spoke type structure, and the at least one plurality of groups of hyperstatic beams are close to the fixed connecting piece (6);
the third transition section (10) is an inner circle, the fixed connecting piece (6) is an outer circle, at least one plurality of groups of overstatic beams which are distributed circumferentially are arranged between the inner circle and the outer circle of the spoke type structure, the plurality of groups of overstatic beams on the same cross section are distributed in a 'rice' -shaped structure, and 8 groups of overstatic beams which are distributed circumferentially are distributed on the same cross section along the axis direction;
of 8 groups of hyperstatic beams distributed in a'm' -shape, 4 groups of hyperstatic beams positioned at the 'X' -shape position are used as normal force Y component measuring elements (7), namely measuring beams, for measuring pneumatic load of normal force Y components;
4 groups of hyperstatic beams positioned at the cross-shaped positions are used as supporting beams.
2. A six-component high torque balance with load mismatch according to claim 1, characterized in that said pitch and roll measuring element (2) further comprises: a first measuring element (21) and a second measuring element (22); wherein the first measuring element (21) and the second measuring element (22) together measure a pitch moment Mz component load and a roll moment Mx component load of the aerodynamic load;
the yaw measurement element (3) further comprises: a third measuring element (31) and a fourth measuring element (32); wherein the third measuring element (31) and the fourth measuring element (32) together measure a yaw moment My component load of the aerodynamic load;
the first measuring element (21), the second measuring element (22), the third measuring element (31) and the fourth measuring element (32) are distributed at 90 degrees in the circumferential direction, and the first measuring element, the second measuring element, the third measuring element and the fourth measuring element are all arranged at the starting end of the first transition section (8).
3. A load-mismatched six-component high-torque balance according to claim 1, characterized by the lateral force Z-component measuring element (4) for measuring the lateral force Z-component load of a pneumatic load;
the axial force X component measuring element (5) is used for measuring the axial force X component load of the pneumatic load.
4. The six-component high-torque balance with mismatched loads according to claim 1, wherein the pitch and roll measuring element (2), the yaw measuring element (3), the lateral force Z component measuring element (4), the axial force X component measuring element (5) and the normal force Y component measuring element (7) are respectively provided with resistance strain gauges, so as to form a wheatstone full bridge to form a measuring circuit.
5. The six-component high-torque balance with unmatched loads according to claim 1, wherein the cross section of the second transition section (9) is in a cylindrical structure, the left side and the right side of the initial end of the second transition section (9) along the horizontal direction are provided with a first L-shaped platform, and the upper side and the lower side of the final end of the second transition section (9) along the vertical direction are respectively provided with a second L-shaped platform;
each first L-shaped platform is provided with a lateral force Z component measuring element (4); an axial force X component measuring element (5) is arranged on each second L-shaped platform;
the lateral force Z component measuring element (4) and the axial force X component measuring element (5) are of a multi-piece hyperstatic beam structure.
6. A six-component high-torque balance with mismatched loads according to claim 5, characterized in that the lateral force Z-component measuring element (4) comprises 4 superimposed hyperstatic beams arranged bilaterally symmetrically;
the axial force X component measuring element (5) comprises 4 overstatic beams which are arranged in an overlapping mode and are symmetrically arranged up and down.
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| CN202110997608.6A CN113834626B (en) | 2021-08-27 | 2021-08-27 | Six-component high-torque balance with unmatched loads |
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| CN114323546B (en) * | 2022-03-07 | 2022-05-17 | 中国空气动力研究与发展中心高速空气动力研究所 | High-sensitivity rod-type six-component wind tunnel test balance embedded with different materials |
| CN116242577B (en) * | 2023-05-06 | 2023-07-07 | 中国空气动力研究与发展中心低速空气动力研究所 | Wind tunnel cluster special balance and wind tunnel system for cluster measurement |
| CN116929702B (en) * | 2023-09-15 | 2023-12-29 | 中国人民解放军32806部队 | Aerodynamics test balance device and test method for aircraft |
| CN118090132B (en) * | 2024-04-23 | 2024-07-09 | 中国空气动力研究与发展中心低速空气动力研究所 | Test device and test method for measuring aerodynamic and operating characteristics of propeller |
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| JP2017166870A (en) * | 2016-03-14 | 2017-09-21 | 三菱重工業株式会社 | Balance for wind tunnel test and wind tunnel test device |
| CN105823615B (en) * | 2016-05-11 | 2018-02-23 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of small asymmetric reentry body aerodynamics force measurement device of mechanical bearing support |
| CN105806586B (en) * | 2016-05-11 | 2018-02-23 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of small asymmetric reentry body aerodynamics force measurement device of air-bearing support |
| CN106644367B (en) * | 2017-01-13 | 2023-06-16 | 中国空气动力研究与发展中心高速空气动力研究所 | Combined type high-resistance wind tunnel strain balance |
| US10267708B2 (en) * | 2017-05-18 | 2019-04-23 | The Boeing Company | Wind tunnel balance and method of use |
| CN108398230B (en) * | 2017-12-29 | 2020-03-24 | 中国航天空气动力技术研究院 | Sheet type six-component balance applied to force measurement of aircraft component |
| CN108181083B (en) * | 2018-01-16 | 2023-07-21 | 中国空气动力研究与发展中心超高速空气动力研究所 | Small-range high lift-drag ratio force balance applied to low-density wind tunnel |
| CN108195554B (en) * | 2018-01-16 | 2023-08-08 | 中国空气动力研究与发展中心超高速空气动力研究所 | Six-component optical fiber aerodynamic force measurement balance and output signal combination method |
| CN108709714B (en) * | 2018-08-08 | 2023-08-22 | 中国空气动力研究与发展中心高速空气动力研究所 | Balance with large rolling moment and small lateral force |
| RU2717746C1 (en) * | 2019-08-08 | 2020-03-25 | Федеральное государственное унитарное предприятие "Центральный аэрогидродинамический институт имени профессора Н.Е. Жуковского" (ФГУП "ЦАГИ)" | Multicomponent tensometric balance |
| CN111579205B (en) * | 2020-06-23 | 2024-05-28 | 中国空气动力研究与发展中心高速空气动力研究所 | Jet balance |
| CN112816175A (en) * | 2021-02-09 | 2021-05-18 | 中国航天空气动力技术研究院 | Small-size small-load six-component strain balance |
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