CN116609021A - Mobile floor balance force measuring system and test method for thermal environment wind tunnel - Google Patents
Mobile floor balance force measuring system and test method for thermal environment wind tunnel Download PDFInfo
- Publication number
- CN116609021A CN116609021A CN202310863818.5A CN202310863818A CN116609021A CN 116609021 A CN116609021 A CN 116609021A CN 202310863818 A CN202310863818 A CN 202310863818A CN 116609021 A CN116609021 A CN 116609021A
- Authority
- CN
- China
- Prior art keywords
- floor
- wind tunnel
- movable
- thermal environment
- balance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010998 test method Methods 0.000 title claims description 4
- 238000012360 testing method Methods 0.000 claims abstract description 51
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000005259 measurement Methods 0.000 claims description 10
- 238000007664 blowing Methods 0.000 claims description 6
- 238000007688 edging Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
Classifications
-
- 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
- G01M9/02—Wind tunnels
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
A mobile floor balance force measuring system and a testing method for a thermal environment wind tunnel belong to the technical field of aerodynamic wind tunnel tests of ground transportation means. The application solves the problem that the aerodynamic test cannot be carried out in the thermal environment wind tunnel in the prior art. The six-component floating frame balance comprises rectifying edge strips, a six-component floating frame balance, a model supporting mechanism, a turntable, fixed supporting legs, movable supporting legs and a movable floor, wherein the movable floor is arranged on the bottom surface of a wind tunnel through the fixed supporting legs and the movable supporting legs, the rectifying edge strips are arranged on the movable floor, the rectifying edge strips are arranged at the front end of the incoming flow side of the movable floor, the turntable is arranged on the bottom surface of the wind tunnel, the turntable is connected with the model supporting mechanism, the model supporting mechanism is used for supporting a test object, and the six-component floating frame balance is further arranged on the turntable. The thermal environment wind tunnel force measuring system and the testing method improve the flow field quality of a model test area, solve the problem that aerodynamic force test cannot be carried out in a thermal environment, and have the repeatability precision of the resistance coefficient within 0.002.
Description
Technical Field
The application belongs to the technical field of aerodynamic wind tunnel tests of ground transportation means, and particularly relates to a mobile floor balance force measuring system and a test method for a thermal environment wind tunnel.
Background
The wind tunnel is a pipeline-shaped experimental device which can manually generate and control air flow, measure the effect of the air flow on objects and observe the physical phenomenon of flow, and the automobile wind tunnel is the pipeline-shaped experimental device and is used for the experimental test of ground vehicles (or similar models). Automobile wind tunnels can be classified into thermal environment wind tunnels (or climate wind tunnels), acoustic wind tunnels, and aerodynamic wind tunnels. Compared with aerodynamic wind tunnels, the thermal environment wind tunnels are large equipment for performing reliability tests on test objects (vehicles) by simulating various climatic phenomena, and compared with aerodynamic wind tunnels, the thermal environment wind tunnels have low requirements on the quality of convection fields, when the test objects are installed in the thermal environment wind tunnels, the thermal environment wind tunnels have serious bracket interference and ground effect and cannot be directly used for aerodynamic tests, and the use efficiency of the thermal environment wind tunnels is limited.
Therefore, the application provides a movable floor balance force measuring system for a thermal environment wind tunnel, which realizes the expansion of the functions of the thermal environment wind tunnel and enriches the test means of the thermal environment wind tunnel.
Disclosure of Invention
The present application has been developed to solve the problem of the prior art that a thermal environment wind tunnel cannot be subjected to aerodynamic testing, and a brief overview of the application is provided below to provide a basic understanding of certain aspects of the application. It should be understood that this summary is not an exhaustive overview of the application. It is not intended to identify key or critical elements of the application or to delineate the scope of the application.
The technical scheme of the application is as follows:
scheme one: the utility model provides a remove floor balance force measurement system for thermal environment wind tunnel, including rectification strake, six components float frame balance, model supporting mechanism, revolving stage, fixed leg, movable leg and removal floor, the removal floor passes through fixed leg and movable leg to be installed on the wind tunnel bottom surface, installs the rectification strake on the removal floor, the inflow side front end at the removal floor is arranged to the rectification strake, the revolving stage setting is on the wind tunnel bottom surface, the revolving stage is connected with model supporting mechanism, model supporting mechanism is used for supporting test object, still install six components float frame balance on the revolving stage.
Further, the movable floor comprises a floor frame and a floor, the floor frame is arranged on the bottom surface of the wind tunnel through a plurality of fixed supporting legs and movable supporting legs, adjacent floor frames are connected through quick connectors, the floor frame is provided with a floor, and rectifying edge strips are arranged at the front end of the incoming flow side of the floor frame.
Furthermore, the floor frame is provided with a guide plate, and the outline of the guide plate is streamline.
Further, install the carousel between model supporting mechanism and the test object, test object installs on the carousel, and the radial distance range of carousel and floor middle part round hole is 1mm ~2mm.
Furthermore, the front edges of the cross sections of the fixed support leg and the movable support leg are arc-shaped, and the rear edges are wedge-shaped.
Furthermore, the gap range between the rectifying edge strip and the air outlet is 0 mm-50 mm, and the rectifying edge strip is a streamline edge strip.
Further, the six-component floating frame balance comprises a strain beam, an elastic beam, an upper floating frame and a lower floating frame, wherein the strain beam is connected to the lower floating frame, the elastic beam is installed on the upper floating frame, and the strain beam is connected with the elastic beam.
Scheme II: the method for testing the mobile floor balance force measuring system for the thermal environment wind tunnel based on the scheme one comprises the following steps:
step one: the six-component floating frame balance is arranged on the turntable, and the turntable is positioned and fixed on the bottom surface of the wind tunnel;
step two: taking the positioned turntable as the center, sequentially positioning the movable floors, and ensuring that the distance between the first row of movable floors and the wind tunnel outlet ranges from 0mm to 50 mm;
step three: the floor frames of the movable floor are connected together through a quick connector, and the fixed support legs are fixed with the T-shaped grooves of the wind tunnel through T-shaped bolts;
step four: the rotating angle of the six-component floating frame balance is adjusted through the rotating disc, so that the resistance direction of the six-component floating frame balance is consistent with the axis of the wind tunnel;
step five: installing a test object on a turntable, collecting the zero point of a six-component floating frame balance, and then carrying out a blowing test;
step six: and fixing the camber angle of the test object at 30 degrees, and carrying out a blowing test at a wind speed of 120kg/h, wherein the repeatability of the resistance coefficient is lower than 0.0014, so that the aerodynamic test index requirement is met.
The application has the following beneficial effects:
according to the mobile floor balance force measuring system for the thermal environment wind tunnel, through the rectification action of the mobile floor and the rectification edge strips, the flow field quality of a model test area is improved, stable air flow capable of carrying out aerodynamic test is provided, the problem that the thermal environment wind tunnel cannot carry out aerodynamic test is solved, and the repeatability precision of the resistance coefficient can be within 0.002;
according to the application, the bottom of the floor frame of the movable floor balance force measuring system for the thermal environment wind tunnel adopts a drag reduction design, the cross sections of the fixed support leg and the movable support leg are designed into circular arcs, and the guide plate is designed into streamline shape, so that the pneumatic load of the frame is obviously reduced, and the stability of the test system is ensured;
the mobile floor balance force measuring system for the thermal environment wind tunnel is based on a modularized thought, each component is designed into a movable subassembly which is easy to transport, when aerodynamic force test is required to be carried out in the thermal environment wind tunnel, the test can be carried out after the movable subassembly is simply assembled and fixedly connected with a T-shaped groove in the wind tunnel, any structure in the original wind tunnel is not required to be changed, and the wind tunnel can be completely disassembled and removed.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a mobile floor balance force measurement system for a thermal environment wind tunnel;
FIG. 2 is a side view of a moving floor balance force measurement system for a thermal environment wind tunnel;
FIG. 3 is a schematic illustration of a turntable mounted on a floor;
FIG. 4 is a schematic view of a deflector mounted to a floor frame;
FIG. 5 is a schematic diagram of the mating relationship of the turntable, the mold support mechanism, and the turntable;
FIG. 6 is a top view of a six-component floating frame balance;
FIG. 7 is a front view of a six-component floating frame balance;
FIG. 8 is a schematic view of a fixed leg;
FIG. 9 is a schematic view of a movable leg;
FIG. 10 is a schematic cross-sectional view of a fixed leg;
FIG. 11 is a schematic cross-sectional view of a movable leg;
fig. 12 is a partial schematic view of fig. 1.
The test device comprises a 1-rectifying side bar, a 2-six-component floating frame balance, a 3-test object, a 4-model supporting mechanism, a 5-turntable, a 6-fixed support leg, a 7-movable support leg, an 8-floor frame, a 9-floor, a 10-turntable, an 11-deflector, a 12-strain beam, a 13-elastic beam, a 14-floating frame, a 15-floating frame and a 16-movable floor.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the present application is described below by means of specific embodiments shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the application. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present application.
The connection mentioned in the present application is divided into a fixed connection and a detachable connection, wherein the fixed connection (i.e. the non-detachable connection) includes, but is not limited to, a conventional fixed connection manner such as a hemmed connection, a rivet connection, an adhesive connection, a welded connection, etc., and the detachable connection includes, but is not limited to, a conventional detachable manner such as a threaded connection, a snap connection, a pin connection, a hinge connection, etc., and when the specific connection manner is not specifically limited, at least one connection manner can be found in the existing connection manner by default, so that the function can be realized, and a person skilled in the art can select the connection according to needs. For example: the fixed connection is welded connection, and the detachable connection is hinged connection.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Embodiment 1, the description of this embodiment with reference to fig. 1-11, a mobile floor balance force measuring system for a thermal environment wind tunnel of this embodiment, including rectifying edging 1, six-component floating frame balance 2, model supporting mechanism 4, rotary table 5, fixed leg 6, movable leg 7 and mobile floor 16, mobile floor 16 is installed on the wind tunnel bottom surface through fixed leg 6 and movable leg 7, the design has T-shaped groove on the former wind tunnel bottom surface, fixed leg 6 is fixed in T-shaped groove through T-shaped bolt, the mobile leg 7 bottom is provided with the wheel, mobile floor 16 is installed in the wind tunnel through fixed leg 6 and movable leg 7, rectifying edging 1 is installed to the incoming side front end of mobile floor 6, be provided with rotary table 5 on the wind tunnel bottom surface, rotary table 5 is connected with model supporting mechanism 4, model supporting mechanism 4 is used for supporting test object 3, test object 3 is the model of oil sludge, six-component floating frame balance 2 is installed on rotary table 5, install carousel 10 between model supporting mechanism 4 and test object 3, rectifying edging 1 designs, streamline coordinates are:
| X/mm | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 |
| Y/mm | 0 | 6.96 | 10.27 | 12.9 | 15.09 | 16.86 | 18.24 | 19.22 | 19.81 |
specifically, the movable floor 16 comprises a floor frame 8 and a floor 9, the bottoms of the floor frames 8 are connected with the fixed supporting legs 6 and the movable supporting legs 7, two adjacent floor frames 8 are connected through quick connectors, the floor 9 is installed on the floor frames 8, the rectifying edge strip 1 is installed at the front end of the incoming flow side of the floor frames 8, the rectifying edge strip 1 is used for preventing air flow separation, the gap range between the front edge rectifying edge strip 1 and the wind tunnel air outlet is 0 mm-50 mm, a circular hole is formed in the floor 9, a rotary disc 10 is arranged between the model supporting mechanism 4 and the test object 3, a radial gap is formed between the rotary disc 10 and the circular hole in the middle of the floor 9, and the radial gap range is 1 mm-2 mm;
specifically, the guide plates 11 are installed on different floor frames 8, the outer contours of the guide plates 11 after being spliced are streamline, the guide plates 11 surround the turntable 5, the six-component floating frame balance 2 and the model supporting mechanism 4, the influence of air flow is isolated, and streamline coordinates of the guide plates 11 are as follows:
| X/mm | 0 | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | 1000 | 1100 |
| Y/mm | 0 | 28.99 | 72.17 | 126.35 | 187.17 | 247.61 | 304.17 | 360.18 | 434.72 | 500.7 | 534.17 | 544.02 |
specifically, the front edges of the cross sections of the fixed support legs 6 and the movable support legs 7 are designed to be arc-shaped, the rear edges of the cross sections of the fixed support legs 6 and the movable support legs 7 are designed to be wedge-shaped, the radius of the arc is 17.5mm, the angle of the wedge is 50 degrees, the movable support legs 7 can be lifted and lowered to adjust the height of the floor 9 from the bottom surface of the wind tunnel, the pneumatic load of the frame can be reduced through the design of the fixed support legs 6 and the movable support legs 7, and the stability of a test system is ensured;
specifically, the six-component floating frame balance 2 comprises a strain beam 12, an elastic beam 13, an upper floating frame 14 and a lower floating frame 15, wherein the strain beam 12 is connected to the lower floating frame 15, the elastic beam 13 is installed on the upper floating frame 14, the strain beam 12 is connected with the elastic beam 13, the lower floating frame 15 is installed on the turntable 5, the upper floating frame 14 is contacted with the bottom surface of the floor 9, an electric resistance strain gauge is attached to the strain beam 12, and the load born by the balance is sensed through the electric resistance strain gauge.
Embodiment 2, referring to fig. 1-11, illustrates a method for testing a moving floor balance force measurement system for a thermal environment wind tunnel according to the present embodiment, comprising the steps of:
step one: the six-component floating frame balance 2 is arranged on the turntable 5, and the turntable 5 is positioned and fixed on the bottom surface of the wind tunnel;
step two: taking the positioned turntable 5 as a center, sequentially positioning the movable floors 16, and ensuring that the distance between the first row of movable floors 16 and the wind tunnel outlet ranges from 0mm to 50 mm;
step three: the floor frames 8 of the movable floor 16 are connected together through quick connectors, and the fixed support legs 6 are fixed with the T-shaped grooves of the wind tunnel through T-shaped bolts;
step four: the rotating angle of the six-component floating frame balance 2 is adjusted through the rotary disc 10, so that the resistance direction of the six-component floating frame balance is consistent with the axis of the wind tunnel;
step five: the test object 3 is arranged on the turntable 10, and a blowing test is carried out after the zero point of the six-component floating frame balance 2 is collected;
step six: and fixing the camber angle of the test object 3 at 30 degrees, and carrying out a blowing test at a wind speed of 120kg/h, wherein the repeatability of the resistance coefficient is lower than 0.0014, so that the aerodynamic test index requirement is met.
The present embodiment is only illustrative of the present patent and does not limit the scope of protection thereof, and those skilled in the art can also change the part thereof, which is within the scope of protection of the present patent without exceeding the spirit of the present patent.
Claims (8)
1. A mobile floor balance force measurement system for a thermal environment wind tunnel, characterized by: including rectification strake (1), six-component floating frame balance (2), model supporting mechanism (4), revolving stage (5), fixed leg (6), movable leg (7) and movable floor (16), movable floor (16) are installed on the wind-tunnel bottom surface through fixed leg (6) and movable leg (7), install rectification strake (1) on movable floor (16), the inflow side front end on movable floor (16) is arranged in rectification strake (1), revolving stage (5) set up on the wind-tunnel bottom surface, revolving stage (5) are connected with model supporting mechanism (4), model supporting mechanism (4) are used for supporting test object (3), six-component floating frame balance (2) are still installed on revolving stage (5).
2. A moving floor balance force measurement system for a thermal environment wind tunnel according to claim 1, wherein: the movable floor (16) comprises a floor frame (8) and a floor (9), wherein the floor frame (8) is arranged on the bottom surface of the wind tunnel through a plurality of fixed supporting legs (6) and movable supporting legs (7), the adjacent floor frames (8) are connected through quick connectors, the floor (9) is arranged on the floor frame (8), and the rectifying edge strip (1) is arranged at the front end of the inflow side of the floor frame (8).
3. A moving floor balance force measurement system for a thermal environment wind tunnel according to claim 2, wherein: the floor frame (8) is provided with a guide plate (11), and the outline of the guide plate (11) is streamline.
4. A moving floor balance force measurement system for a thermal environment wind tunnel according to claim 1 or 3, wherein: a rotary table (10) is arranged between the model supporting mechanism (4) and the test object (3), the test object (3) is arranged on the rotary table (10), and the radial distance range between the rotary table (10) and a round hole in the middle of the floor (9) is 1 mm-2 mm.
5. A moving floor balance force measurement system for a thermal environment wind tunnel according to claim 4, wherein: the front edges of the cross sections of the fixed support leg (6) and the movable support leg (7) are arc-shaped, and the rear edges are wedge-shaped.
6. The mobile floor balance force measuring system for the thermal environment wind tunnel according to claim 2, wherein the gap between the rectifying edge strip (1) and the air outlet ranges from 0mm to 50mm, and the rectifying edge strip (1) is a streamline edge strip.
7. The mobile floor balance force measuring system for the thermal environment wind tunnel according to claim 5, wherein the six-component floating frame balance (2) comprises a strain beam (12), an elastic beam (13), an upper floating frame (14) and a lower floating frame (15), the strain beam (12) is connected to the lower floating frame (15), the elastic beam (13) is mounted on the upper floating frame (14), and the strain beam (12) is connected with the elastic beam (13).
8. A method of testing a moving floor balance force measurement system for a thermal environment wind tunnel according to claim 7, comprising the steps of:
step one: the six-component floating frame balance (2) is arranged on the rotary table (5), and the rotary table (5) is positioned and fixed on the bottom surface of the wind tunnel;
step two: taking the positioned turntable (5) as the center, sequentially positioning the movable floors (16), and ensuring that the distance between the first row of movable floors (16) and the wind tunnel outlet ranges from 0mm to 50 mm;
step three: the floor frames (8) of the movable floor (16) are connected together through quick connectors, and the fixed support legs (6) are fixed with the T-shaped grooves of the wind tunnel through T-shaped bolts;
step four: the rotating angle of the six-component floating frame balance (2) is adjusted through the rotary disc (10), so that the resistance direction of the six-component floating frame balance is consistent with the axis of the wind tunnel;
step five: the test object (3) is arranged on the turntable (10), and the blowing test is carried out after the zero point of the six-component floating frame balance (2) is collected;
step six: and fixing the camber angle of the test object (3) at 30 degrees, and carrying out a blowing test at a wind speed of 120kg/h, wherein the repeatability of the resistance coefficient is lower than 0.0014, so that the aerodynamic test index requirement is met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310863818.5A CN116609021A (en) | 2023-07-14 | 2023-07-14 | Mobile floor balance force measuring system and test method for thermal environment wind tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310863818.5A CN116609021A (en) | 2023-07-14 | 2023-07-14 | Mobile floor balance force measuring system and test method for thermal environment wind tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116609021A true CN116609021A (en) | 2023-08-18 |
Family
ID=87685655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310863818.5A Pending CN116609021A (en) | 2023-07-14 | 2023-07-14 | Mobile floor balance force measuring system and test method for thermal environment wind tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116609021A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568371A (en) * | 2015-01-04 | 2015-04-29 | 浙江大学 | Multifunctional lifting device for automobile wind tunnel test |
| CN105953999A (en) * | 2016-06-16 | 2016-09-21 | 吉林大学 | Automatic adjustable automobile wind tunnel testing platform with function of interference elimination |
| CN108489740A (en) * | 2018-04-18 | 2018-09-04 | 吉林大学 | A kind of vehicle single-wheel wind tunnel test platform and its control method |
| CN110031180A (en) * | 2019-05-15 | 2019-07-19 | 吉林大学 | A kind of wheelbase can automatic adjustable two-purpose car wind tunnel test platform and its control method |
| CN112556968A (en) * | 2021-02-23 | 2021-03-26 | 中国空气动力研究与发展中心低速空气动力研究所 | Three-quarter opening test section for acoustic wind tunnel test |
-
2023
- 2023-07-14 CN CN202310863818.5A patent/CN116609021A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568371A (en) * | 2015-01-04 | 2015-04-29 | 浙江大学 | Multifunctional lifting device for automobile wind tunnel test |
| CN105953999A (en) * | 2016-06-16 | 2016-09-21 | 吉林大学 | Automatic adjustable automobile wind tunnel testing platform with function of interference elimination |
| CN108489740A (en) * | 2018-04-18 | 2018-09-04 | 吉林大学 | A kind of vehicle single-wheel wind tunnel test platform and its control method |
| CN110031180A (en) * | 2019-05-15 | 2019-07-19 | 吉林大学 | A kind of wheelbase can automatic adjustable two-purpose car wind tunnel test platform and its control method |
| CN112556968A (en) * | 2021-02-23 | 2021-03-26 | 中国空气动力研究与发展中心低速空气动力研究所 | Three-quarter opening test section for acoustic wind tunnel test |
Non-Patent Citations (2)
| Title |
|---|
| 尹章顺等: "泛亚汽车缩比模型风洞性能与气动实验", 《空气动力学学报》, vol. 38, no. 5, pages 924 - 931 * |
| 朱明勇等: "基于CFD和混合配平算法的直升机旋翼地面效应模拟", 《航空学报》, vol. 37, no. 08, pages 2539 - 2551 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Landstrom et al. | Aerodynamic effects of different tire models on a sedan type passenger car | |
| CN104568094B (en) | Fixed train lifting overhauling device with complete train weighing function | |
| CN102788660B (en) | Universal mass and centroid measurement platform | |
| Watkins et al. | Aerodynamic drag reduction of goods trains | |
| CN116609021A (en) | Mobile floor balance force measuring system and test method for thermal environment wind tunnel | |
| CN106346235A (en) | Bogie assembling device | |
| US20240118155A1 (en) | Heavy-duty, high-power and large-torque chassis dynamometer for multi-environmental system | |
| US9146174B2 (en) | Apparatus for determining forces and moments acting on motor vehicles in a wind tunnel | |
| CN111337340B (en) | Testing arrangement of simply-supported stringer of side end test piece configuration | |
| CN213225923U (en) | Sandwich cabin board quick positioning assembly frock | |
| CN113310827B (en) | Multidirectional loading test device for driving axle housing of commercial vehicle | |
| CN205280324U (en) | Precision measurement wind -tunnel is device of local air current angle of declination of test section transonic speed | |
| CN115452307A (en) | Method and device for reducing blocking effect of icing wind tunnel on large-size test model | |
| CN210555579U (en) | Rainproof and dustproof device for inspection unmanned aerial vehicle | |
| CN210898781U (en) | Adjustable motor experiment support | |
| CN212253883U (en) | Detection tool for automobile front longitudinal beam assembly | |
| Mason Jr et al. | An Aerodynamic Test Facility for Scale-Model Automobiles | |
| CN209656267U (en) | A kind of rail traffic pod structural mechanics test fixture | |
| CN218628029U (en) | Automobile front grille decorative strip measuring gauge | |
| CN212605794U (en) | Unmanned aerial vehicle's damping device for nuclear power station | |
| CN113155406B (en) | Method for determining wind load body type coefficient of rod member of power transmission tower structure | |
| CN203489804U (en) | Detection tooling of outer doorsill decorative plate | |
| CN220449680U (en) | Lifting device of roller brake inspection bench | |
| CN114161065A (en) | Wind tunnel guide vane welding auxiliary device | |
| CN220572942U (en) | Building construction dust fall mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |