CN109974963B - Sailing boat wind tunnel experimental device - Google Patents
Sailing boat wind tunnel experimental device Download PDFInfo
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- CN109974963B CN109974963B CN201910303610.1A CN201910303610A CN109974963B CN 109974963 B CN109974963 B CN 109974963B CN 201910303610 A CN201910303610 A CN 201910303610A CN 109974963 B CN109974963 B CN 109974963B
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- 238000002474 experimental method Methods 0.000 claims abstract description 9
- 238000000429 assembly Methods 0.000 claims abstract description 8
- 230000000712 assembly Effects 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 230000000087 stabilizing effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- G01M9/04—Details
-
- 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
- G01M9/08—Aerodynamic models
Abstract
The sailing boat wind tunnel experimental device comprises a floor horizontally arranged in a wind tunnel, wherein a through hole is formed in the middle of the floor, a cover plate is erected on the through hole through a connecting mechanism, a turntable is arranged on the wind tunnel below the floor, the floor is arranged on the turntable through a connecting rod, a strain balance is arranged on the turntable, and the strain balance is connected with a computer; the strain balance is horizontally provided with a supporting platform, clamping assemblies are arranged on two sides of the supporting platform, the middle of the supporting platform is provided with a supporting assembly, the clamping assemblies and the supporting assembly are both positioned below a floor, and an electric winch is further arranged on the floor. According to the sailing ship wind tunnel experimental device, the structure is adopted, and when wind tunnel experiments are carried out on sailing ships with the ballast keels and the stabilizing plates, the ships can be placed in the sailing ship wind tunnel experimental device, so that the effect of fixing the ships is achieved, and the sailing ship with the ballast keels and the stabilizing plates can also carry out wind tunnel experiments.
Description
Technical field:
the invention relates to the field of ships, in particular to a sailing ship wind tunnel experimental device.
The background technology is as follows:
sailboats are vessels that advance mainly using sails as power. Sailing of sailing boats is a recreational, exploratory and technical water recreation and sports. Modern sailing boat sports have become one of the most popular and pleasure sports activities in coastal countries and regions of the world, and are also important content for people in all countries to communicate with sports culture. The sailing boat has the advantages of delicate appearance, strong operability, entertainment and experience, environment friendliness and no pollution, depends on the sails as power, is suitable for long-time sailing on the sea, and has taste and fun, and represents quality life. The sailing boat utilizes the sail to provide power, so whether the aerodynamic performance of the sail is good is very important, the aerodynamic performance test of the sail is the wind tunnel test at present mainly, but for the sailing boat with the ballast keels and the stabilizing plates, the wind tunnel test cannot be carried out, because the ballast keels and the stabilizing plates are arranged at the bottom of the boat, the stable placement cannot be carried out, the smooth performance of the test cannot be ensured, and the working conditions of different wind direction angles of the boat and different windward angles of the sail cannot be simulated.
The invention comprises the following steps:
the invention provides a sailing boat wind tunnel experimental device which is reasonable in structural design and solves the problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the sailing boat wind tunnel experimental device comprises a floor horizontally arranged in a wind tunnel, wherein a through hole is formed in the middle of the floor, a cover plate is erected on the through hole through a connecting mechanism, a turntable is arranged on the wind tunnel below the floor, the floor is arranged on the turntable through a connecting rod, a strain balance is arranged on the turntable, and the strain balance is connected with a computer; the strain balance is horizontally provided with a supporting platform, clamping assemblies are arranged on two sides of the supporting platform, the middle of the supporting platform is provided with a supporting assembly, the clamping assemblies and the supporting assembly are both positioned below a floor, and an electric winch is further arranged on the floor.
The clamping assembly comprises a plurality of L-shaped clamping rods arranged on two sides of the supporting platform, and the transverse rods and the vertical rods of the L-shaped clamping rods are telescopic rods with adjustable lengths.
The number of the L-shaped clamping rods is four, and two L-shaped clamping rods are respectively arranged on two sides of the supporting platform.
The support assembly comprises a Y-shaped support frame arranged in the middle of the support platform, and the Y-shaped support frame comprises a support piece arranged on the support platform and a Y-shaped frame detachably arranged on the support piece.
The number of the Y-shaped supporting frames is two.
The two sides of the supporting platform are respectively provided with a sliding groove, the bottom of the L-shaped clamping rod is slidably arranged in the sliding grooves through the U-shaped fixing piece, and a fastening bolt penetrates through the U-shaped fixing piece and the sliding grooves to fix the U-shaped fixing piece on the supporting platform.
The middle part of the supporting platform is provided with a moving groove along the length direction of the sliding groove, and the Y-shaped supporting frame is movably arranged in the moving groove.
The connecting mechanism comprises a plurality of clamping plate groups arranged on the floor, the clamping plate groups comprise two clamping plates symmetrically arranged on the floor close to the through holes, the distance between the two clamping plates is matched with the length of the cover plate, and the gap between the clamping plates and the floor is larger than the thickness of the cover plate.
According to the sailing wind tunnel experimental device, the structure is adopted, and for sailing ships with the ballast keels and the stabilizing plates, when wind tunnel experiments are carried out, the ship model can be placed in the sailing ship wind tunnel experimental device, the ship model is fixed, and the sailing ship with the ballast keels and the stabilizing plates can also carry out wind tunnel experiments; in addition, the wind direction angle of the ship and the windward angle of the sail can be automatically adjusted, so that the ship is controlled to carry out aerodynamic experiments under the action of different wind directions, manual adjustment is not needed, the experimental efficiency is greatly improved, and meanwhile, the accuracy of experimental data is also improved.
Description of the drawings:
fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the support platform of the present invention.
Fig. 3 is a schematic top view of the present invention.
In the figure, 1, a wind tunnel, 2, a floor, 3, through holes, 4, a cover plate, 5, a turntable, 6, a connecting rod, 7, a strain balance, 8, a supporting platform, 9, an electric winch, 10, an L-shaped clamping rod, 11, a Y-shaped supporting frame, 12, a sliding groove, 13, a moving groove, 14 and a clamping plate.
The specific embodiment is as follows:
in order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings.
As shown in figures 1-3 of the drawings,
the sailing boat wind tunnel experimental device comprises a floor 2 horizontally arranged in a wind tunnel 1, wherein a through hole 3 is formed in the middle of the floor 2, a cover plate 4 is arranged on the through hole 3 through a connecting mechanism, a rotary table 5 is arranged on the wind tunnel 1 below the floor 2, the floor 2 is arranged on the rotary table 5 through a connecting rod 6, a strain balance 7 is arranged on the rotary table 5, and the strain balance 7 is connected with a computer; the strain balance 7 is horizontally provided with a supporting platform 8, clamping assemblies are arranged on two sides of the supporting platform 8, a supporting assembly is arranged in the middle of the supporting platform, the clamping assemblies and the supporting assembly are both positioned below the floor 2, and an electric winch 9 is further arranged on the floor 2.
The clamping assembly comprises a plurality of L-shaped clamping rods 10 arranged on two sides of the supporting platform 8, and the transverse rods and the vertical rods of the L-shaped clamping rods 10 are telescopic rods with adjustable lengths.
The number of the L-shaped clamping rods 10 is four, and two L-shaped clamping rods 10 are respectively arranged on two sides of the supporting platform 8.
The support assembly comprises a Y-shaped support frame 11 arranged in the middle of the support platform 8, and the Y-shaped support frame 11 comprises a support piece arranged on the support platform 8 and a Y-shaped frame detachably arranged on the support piece.
The number of the Y-shaped supporting frames 11 is two.
The two sides of the supporting platform 8 are respectively provided with a sliding groove 12, the bottom of the L-shaped clamping rod 10 is slidably arranged in the sliding grooves 12 through a U-shaped fixing piece, and a fastening bolt penetrates through the U-shaped fixing piece and the sliding grooves 12 to fix the U-shaped fixing piece on the supporting platform 8.
A moving groove 13 is arranged in the middle of the supporting platform 8 along the length direction of the sliding groove 12, and the Y-shaped supporting frame 11 is movably arranged in the moving groove 13.
The connecting mechanism comprises a plurality of clamping plate groups arranged on the floor 2, the clamping plate groups comprise two clamping plates 14 symmetrically arranged on the floor 2 close to the through holes 3, the distance between the two clamping plates 14 is matched with the length of the cover plate 4, and the gap between the clamping plates 14 and the floor 2 is larger than the thickness of the cover plate 4.
When the experiment is carried out, after the ship model to be tested is determined, the height of the supporting component is adjusted according to the size of the ballast keel of the ship model, the Y-shaped supporting frame 11 of the supporting component comprises a supporting piece arranged on a supporting platform and a Y-shaped frame detachably arranged on the supporting piece, the Y-shaped frame is fixed on the supporting piece through bolts, a plurality of fixing holes are formed in the supporting piece, and the height of the Y-shaped supporting frame can be realized through fixing the Y-shaped supporting frame on the fixing holes with different heights. Simultaneously, two Y type support frames 11 slidable mounting are in the removal groove 13, and the fixture block that cooperatees with the removal groove can be set up to the bottom of two Y type support frames 11, and Y type support frame 11 passes through fixture block slidable mounting in removal groove 13, and the distance between two Y type support frames 11 can be adjusted according to the size of boats and ships model.
Then according to the length of the height of ship model's size adjustment L type clamping lever 10 and L type clamping lever's horizontal pole, L type clamping lever 10's horizontal pole and montant are adjustable length's telescopic link, and horizontal pole and montant all are including the dead lever and the detachable pole that the cover was established together, are provided with a plurality of through-hole on the dead lever, and the detachable pole passes through the bolt fastening on the dead lever, can realize the regulation of horizontal pole and montant length through fixing on different through-holes. The length of the vertical rod is adjusted to meet the requirements of different ballast keel sizes, and the L-shaped clamping rod 10 can clamp the ship model through adjusting the length of the transverse rod. In addition, the L-shaped clamp bars 10 are fixed in the sliding grooves 12 by U-shaped fixing members, and the distance between the L-shaped clamp bars 10 can be adjusted according to the size of the ship model.
After the supporting component and the clamping component are adjusted, the ship model can be placed on the supporting platform 8, the upper part of the ship body extends to the upper part of the floor 2, and the floor 2 is used for simulating the sea level.
After placing the ship model, place apron 4 between ship model and floor 2, apron 4 can avoid in the in-process of test to wind through the through-hole on floor 2 enters into floor 2 below, influences the accuracy of experiment, and the both ends card of apron 4 is established between two cardboard 14 and floor 2, and cardboard 14's setting can avoid apron 4 to be lifted by the strong wind at the in-process of experiment. The cover plate 4 is close to the ship model but is not abutted against the ship model by moving the position of the cover plate 4, so that a margin is reserved for shaking of the ship model after the ship model is subjected to wind power in the testing process. Then, a plastic film is covered between the cover plate 4 and the ship model, and the plastic film is light, thin, elastic and tough, can be attached between the ship and the cover plate 4, keeps allowance for the shaking of the ship, and further prevents wind from entering below the floor 2.
Finally, the rope of the electric winch 9 is connected to the sail of the ship, completing the entire installation process of the ship model.
After the ship model is installed, the rotation of the turntable 5 can drive the ship model to rotate so as to adjust the wind direction angle of the ship model, and the electric winch 9 can be controlled so as to adjust the windward angle of the sail. After the specific angle is adjusted, the test of different wind powers can be implemented through the wind tunnel.
The strain balance 7 is a kind of wind tunnel balance and consists of a balance element, a strain gauge and a measuring circuit. When wind tunnel force tests are performed, the strain balance 7 can measure aerodynamic loads acting on the model in the body shafting at the same time, namely three forces: normal force, axial force and transverse force; and three moments: pitching moment, yawing moment and pitching moment. In wind tunnel tests, the strain balance 7 is subjected to aerodynamic loads acting on the ship model. The balance element deforms under the load, and the strain is proportional to the magnitude of the external force. The strain gauge attached to the surface of the balance element is deformed at the same time, and the resistance value thereof is changed. This increase in resistance is proportional to the aerodynamic load value experienced by the strain balance. The resistance change is represented as voltage change after amplification by a measuring circuit, and the voltage signal is input to a computer for calculation after A/D conversion, so that the force and the moment on the model can be obtained.
And (3) adjusting different angles of the ship model, testing different wind powers of the ship model, and obtaining the force and moment received on the ship model under different angles through data obtained by the strain balance to obtain the overall aerodynamic performance of the ship model.
The above embodiments are not to be taken as limiting the scope of the invention, and any alternatives or modifications to the embodiments of the invention will be apparent to those skilled in the art and fall within the scope of the invention.
The present invention is not described in detail in the present application, and is well known to those skilled in the art.
Claims (5)
1. The utility model provides a sailing boat wind tunnel experiment device which characterized in that: the device comprises a floor horizontally arranged in a wind tunnel, wherein a through hole is formed in the middle of the floor, a cover plate is erected on the through hole through a connecting mechanism, a turntable is arranged on the wind tunnel below the floor, the floor is arranged on the turntable through a connecting rod, a strain balance is arranged on the turntable, and the strain balance is connected with a computer; the strain balance is horizontally provided with a supporting platform, clamping assemblies are arranged on two sides of the supporting platform, the middle of the supporting platform is provided with a supporting assembly, the clamping assemblies and the supporting assembly are both positioned below a floor, and an electric winch is further arranged on the floor;
the clamping assembly comprises a plurality of L-shaped clamping rods arranged on two sides of the supporting platform, and the transverse rods and the vertical rods of the L-shaped clamping rods are telescopic rods with adjustable lengths;
the support assembly comprises a Y-shaped support frame arranged in the middle of the support platform;
the two sides of the supporting platform are respectively provided with a sliding groove, the bottom of the L-shaped clamping rod is slidably arranged in the sliding grooves through the U-shaped fixing piece, and a fastening bolt penetrates through the U-shaped fixing piece and the sliding grooves to fix the U-shaped fixing piece on the supporting platform;
the middle part of the supporting platform is provided with a moving groove along the length direction of the sliding groove, and the Y-shaped supporting frame is movably arranged in the moving groove.
2. The sailing wind tunnel experimental device of claim 1, wherein: the number of the L-shaped clamping rods is four, and two L-shaped clamping rods are respectively arranged on two sides of the supporting platform.
3. The sailing wind tunnel experimental device of claim 1, wherein: the Y-shaped support frame comprises a support piece arranged on the support platform and a Y-shaped frame detachably arranged on the support piece.
4. A sailing wind tunnel experimental device according to claim 3, wherein: the number of the Y-shaped supporting frames is two.
5. The sailing wind tunnel experimental device of claim 1, wherein: the connecting mechanism comprises a plurality of clamping plate groups arranged on the floor, the clamping plate groups comprise two clamping plates symmetrically arranged on the floor close to the through holes, the distance between the two clamping plates is matched with the length of the cover plate, and the gap between the clamping plates and the floor is larger than the thickness of the cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910303610.1A CN109974963B (en) | 2019-04-16 | 2019-04-16 | Sailing boat wind tunnel experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910303610.1A CN109974963B (en) | 2019-04-16 | 2019-04-16 | Sailing boat wind tunnel experimental device |
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| Publication Number | Publication Date |
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| CN109974963A CN109974963A (en) | 2019-07-05 |
| CN109974963B true CN109974963B (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910303610.1A Active CN109974963B (en) | 2019-04-16 | 2019-04-16 | Sailing boat wind tunnel experimental device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115200828B (en) * | 2022-09-14 | 2022-11-15 | 中国航空工业集团公司沈阳空气动力研究所 | Follow-up turntable mechanism of sailboard simulation system of sailboat |
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