CN115014632A - Testing device and testing method for pulsating load of surrounding shell area of underwater vehicle - Google Patents
Testing device and testing method for pulsating load of surrounding shell area of underwater vehicle Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
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- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The invention provides a device and a method for testing pulsating load of an underwater vehicle surrounding shell area, and belongs to the field of ship and ocean engineering testing. It includes the underwater vehicle model, circulation tank, adapting unit, supporting component and fixed part, adapting unit includes prelude connecting rod and afterbody connecting rod, prelude connecting rod and afterbody connecting rod set up the head and the tail both sides at underwater vehicle model top respectively, prelude connecting rod and afterbody connecting rod all link to each other with supporting component, supporting component passes through the fixed part and links to each other with circulation tank's lateral wall, the circulation tank both sides all are provided with the guide plate, underwater vehicle model encloser sets up along erectting the orientation downwards, be provided with the radome fairing on the underwater vehicle model, the radome fairing sets up between prelude connecting rod and afterbody connecting rod, be provided with acceleration sensor and pressure sensor on the underwater vehicle model. The method is mainly used for testing the multi-working-condition pulsating load in the surrounding shell area of the underwater vehicle.
Description
Technical Field
The invention belongs to the field of ship and ocean engineering tests, and particularly relates to a device and a method for testing pulsating load of an underwater vehicle surrounding shell area.
Background
The vibration and flow-induced noise conditions of the underwater vehicle during submarine navigation have important significance for sound stealth research. The pulsating pressure and the vibration acceleration response on the surface of the underwater vehicle model are measured through an underwater vehicle model pulsating load test, and the formation and propagation rules of the flow-induced noise can be analyzed, so that the method has guiding significance for reducing the flow-induced noise of the underwater vehicle and improving the concealment and the navigation safety of the underwater vehicle. Meanwhile, the underwater vehicle flow excitation test can find the acoustic problem existing in the ship structure design in advance, and the ship acoustic design is performed with half the effort.
The circulating water tank is a large-scale test device consisting of an oscillating mechanism, a driving motor control system and a data acquisition system. An operator can send an instruction to the driving motor through the flow velocity control console, and the rotating speed of the motor is adjusted, so that the required flow velocity is obtained to perform a flow stimulation test, and the water in the water tank is recycled. The circulating water tank has the advantages of good flow rate control effect, large size of a working section and the like, and is common equipment for underwater model tests. Therefore, the testing device for the pulsating load of the surrounding shell area of the underwater vehicle based on the development and design of the circulating water tank has wide application prospect and great application value.
Through the literature search of the prior art, no relevant technology related to the testing device and the testing method for the pulsating load of the underwater structure in the circulating water tank is found.
Disclosure of Invention
In view of the above, the present invention is directed to a device and a method for testing pulsating load in an underwater vehicle hull region, so as to solve the problems in the background art.
In order to achieve the purpose, the invention adopts the following technical scheme: a device for testing the pulsating load of the hull region of an underwater vehicle comprises an underwater vehicle model, a circulating water tank, a connecting part, a supporting part and a fixing part, wherein the connecting part comprises a head connecting rod and a tail connecting rod which are respectively arranged at the head and tail sides of the top of the underwater vehicle model, the head connecting rod and the tail connecting rod are both connected with the supporting part, the supporting part is connected with the side wall of the circulating water tank through the fixing part, guide plates are arranged at both sides of the circulating water tank, the head of the underwater vehicle model faces the incoming flow direction of the circulating water tank, a hull is arranged on the underwater vehicle model and downwards arranged along the vertical direction, a fairing is arranged on the underwater vehicle model and is arranged between the head connecting rod and the tail connecting rod, and an acceleration sensor and a pressure sensor are arranged on the underwater navigation body model.
Furthermore, the supporting component comprises a head supporting rod and a tail supporting rod, the head supporting rod is vertically connected with the head connecting rod, the tail supporting rod is vertically connected with the tail connecting rod, and the head supporting rod and the tail supporting rod are respectively connected with the side wall of the circulating water tank through the fixing component.
Furthermore, the fixing part comprises a fixing iron block and a G-shaped woodworking clamp, the fixing iron blocks are arranged at two ends of the head supporting rod and the tail supporting rod, and the G-shaped woodworking clamp clamps the fixing iron block and the edge of the side wall of the circulating water tank.
Furthermore, a pressure sensor threaded hole is formed in the outer surface of the underwater navigation body model, a sensor mounting large opening is formed in the bottom of the underwater navigation body model, an acceleration sensor stud is arranged inside the underwater navigation body model, the pressure sensor is connected with the outer surface of the underwater navigation body model through the pressure sensor threaded hole, and the acceleration sensor is mounted on the acceleration sensor stud through the sensor mounting large opening.
Furthermore, the outer side of the large opening for installing the sensor is provided with a curved plate, threaded holes are formed in the underwater navigation body model, the fairing and the curved plate are connected with the underwater navigation body model through the matching of the threaded holes and screws, and rubber gaskets are arranged between the large opening for installing the sensor and the curved plate and between the fairing and the underwater navigation body model.
Furthermore, cables of the pressure sensor and the acceleration sensor penetrate out through the fairing.
Furthermore, the top of the underwater navigation body model is provided with a connecting rod threaded hole, the bottom ends of the head connecting rod and the tail connecting rod are both provided with connecting threads, and the connecting threads are matched and connected with the connecting rod threaded hole.
Furthermore, a supporting hole is formed in the head connecting rod, a long circular supporting hole is formed in the tail connecting rod, the supporting hole and the long circular supporting hole are opposite to the side wall of the circulating water tank, the head supporting rod penetrates through the supporting hole, the tail supporting rod penetrates through the long circular supporting hole, threads are arranged on the tail supporting rod, the tail supporting rod and the tail connecting rod are fixed in position through matching of the threads and a hexagon nut, and scale marks are arranged on one side of the long circular supporting hole.
Furthermore, the head connecting rod, the tail connecting rod, the head supporting rod and the tail supporting rod are all of hollow tube structures, and the cross sections of the fairing, the head connecting rod and the tail connecting rod are streamline.
The invention also comprises a method for testing the pulsating load of the surrounding shell area of the underwater vehicle, which comprises the following steps:
step 1: installing a pressure sensor and an acceleration sensor at a preset position of an underwater navigation body model through a pressure sensor threaded hole and an acceleration sensor stud, sealing a sensor installation large opening, fixing a fairing on the underwater navigation body model, and exposing the fairing out of the water surface during testing;
step 2: fixing a head connecting rod and a tail connecting rod with the underwater vehicle model, respectively penetrating a head supporting rod and a tail supporting rod through a supporting hole and a long circular supporting hole, screwing and fixing the tail supporting rod and the tail connecting rod through nuts, enabling a supporting part to stretch across the side wall of the circulating water tank, and fixing the supporting part on the circulating water tank through a fixing part;
and step 3: regulating the flow velocity in the water tank by using a flow velocity control console of the circulating water tank, and after the flow velocity is stable, performing data acquisition of pulsating pressure and vibration acceleration by using a data acquisition instrument and matched test software;
and 4, step 4: when the pitching angle of the underwater navigation body model is changed, the fixing part is loosened, the position of the head supporting rod is kept still, and the tail supporting rod is adjusted to penetrate through different positions of the oblong supporting hole and then fixed; when the incident flow angle of the underwater navigation body model is changed, the included angles between the head supporting rod and the side wall of the circulating water tank and the included angles between the tail supporting rod and the side wall of the circulating water tank are changed.
Compared with the prior art, the invention has the beneficial effects that: the invention can flexibly adjust the incident flow angle and the pitching angle of the underwater vehicle surrounding shell area according to the test requirements. Meanwhile, the influence of the connecting device and the rectifying device on the flow field of the test area is reduced, and the test precision and accuracy are improved. And measuring the pulsating pressure and the vibration acceleration of the surrounding shell area of the underwater vehicle under different working conditions. The invention has simple structure, convenient maintenance, good adaptability and wide application range, and reduces the test difficulty of the pulsating load in the surrounding shell area of the underwater vehicle.
The invention can flexibly change the position of the sensor according to the research requirement, can change the size of the device according to the test site condition, completes the test of the pulsating pressure and the vibration acceleration of the underwater vehicle under different working conditions, and provides data support for the research of the pulsating load characteristic of the underwater vehicle. The invention has the advantages of simple structure, convenient operation, wide application range and the like. The model attitude can be flexibly adjusted according to the actual test environment, and convenience in adjusting the working condition of the underwater navigation body model during the test of the pulsating load in the circulating water tank device is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic perspective view of a pulsating load testing device in the hull region of an underwater vehicle according to the present invention;
FIG. 2 is a schematic view of the connection structure of the model of the underwater vehicle according to the present invention;
FIG. 3 is a schematic view of a three-dimensional structure of an underwater vehicle model according to the present invention;
FIG. 4 is a schematic view of the lower structure of the model of the underwater vehicle according to the present invention;
FIG. 5 is a schematic view of a connecting member according to the present invention;
FIG. 6 is a schematic view of a tail support rod according to the present invention;
FIG. 7 is a schematic view of a curved plate structure according to the present invention;
FIG. 8 is a schematic view of a G-clamp according to the present invention;
fig. 9 is a schematic view of a baffle according to the present invention.
1-underwater navigation body model, 2-fairing, 3-head connecting rod, 4-tail connecting rod, 5-head supporting rod, 6-tail supporting rod, 7-fixed iron block, 8-pressure sensor threaded hole, 9-sensor installation large opening, 10-connecting rod threaded hole, 11-acceleration sensor stud, 12-supporting hole, 13-long round supporting hole, 14-connecting thread, 15-thread, 16-hexagon nut, 17-curved plate, 18-threaded hole, 19-rubber gasket, 20-G type carpenter clamp and 21-guide plate.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely explained below with reference to the drawings in the embodiments of the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict, and the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments.
Referring to fig. 1-8 to illustrate the embodiment, a device for testing pulsating load in an encloser area of an underwater vehicle comprises an underwater vehicle model 1, a circulating water tank, a connecting part, a supporting part and a fixing part, wherein the connecting part comprises a head connecting rod 3 and a tail connecting rod 4, the head connecting rod 3 and the tail connecting rod 4 are respectively arranged at the head and tail sides of the top of the underwater vehicle model 1, the head connecting rod 3 and the tail connecting rod 4 are both connected with the supporting part, the supporting part is connected with the side wall of the circulating water tank through the fixing part, guide plates 21 are respectively arranged at both sides of the circulating water tank, the head of the underwater vehicle model 1 faces the incoming flow direction of the circulating water tank, an encloser is arranged on the underwater vehicle model 1, the encloser is arranged downwards along the vertical direction, and a fairing 2 is arranged on the underwater vehicle model 1, the fairing 2 is arranged between the head connecting rod 3 and the tail connecting rod 4, and the underwater navigation body model 1 is provided with an acceleration sensor and a pressure sensor.
This embodiment the supporting component includes prelude bracing piece 5 and afterbody bracing piece 6, and prelude bracing piece 5 and 6 length slightly more of afterbody bracing piece are greater than the circulating water tank width, prelude bracing piece 5 is connected with prelude connecting rod 3 is perpendicular, afterbody bracing piece 6 is connected with afterbody connecting rod 4 is perpendicular, prelude bracing piece 5 and afterbody bracing piece 6 link to each other with the lateral wall of circulating water tank through fixed part respectively.
The fixing part comprises a fixing iron block 7 and a G-shaped woodworking clamp 20, the fixing iron block 7 is arranged at each of two ends of the head support rod 5 and the tail support rod 6, the head support rod 5 and the tail support rod 6 penetrate through the fixing iron block 7, and the G-shaped woodworking clamp 20 clamps the fixing iron block 7 and the side wall edge of the circulating water tank.
The outer surface of the underwater navigation body model 1 is provided with a pressure sensor threaded hole 8, the bottom of the underwater navigation body model 1 is provided with a sensor installation large opening 9, an acceleration sensor stud 11 is arranged inside the underwater navigation body model 1, the pressure sensor is connected with the outer surface of the underwater navigation body model 1 through the pressure sensor threaded hole 8, the acceleration sensor is installed on the acceleration sensor stud 11 through the sensor installation large opening 9, the quantity of the acceleration sensor and the pressure sensor is a plurality of, and the pressure sensor for testing enables the surface of the sensor to be flush with the surface of the underwater navigation body model 1 through the pressure sensor threaded hole 8.
The positions and the number of the pressure sensor threaded holes 8 and the acceleration sensor studs 11 are set according to actual measurement requirements, the sizes of the pressure sensor threaded holes 8 and the sizes of the acceleration sensor studs 11 are adjusted according to actual test sensor models, the underwater navigation body model 1 has symmetry, and the pressure sensor threaded holes 8 and the acceleration sensor studs 11 are respectively arranged on the left side and the right side of the underwater navigation body model 1.
The outer side of the large sensor installation opening 9 is provided with a bent plate 17, threaded holes 18 are formed in the underwater vehicle model 1, the fairing 2 and the bent plate 17 are connected with the underwater vehicle model 1 through the matching of the threaded holes 18 and screws, and rubber gaskets 19 are arranged between the large sensor installation opening 9 and the bent plate 17 and between the fairing 2 and the underwater vehicle model 1 for watertight treatment. The large sensor mounting opening 9 is provided with a matched sealing bent plate 17, after the sensor required by the test is mounted, the bent plate 17 is mounted at the large sensor mounting opening 9 through a screw, and a rubber gasket 19 is used between the two for sealing and waterproofing.
The fairing is to expose out of the water surface during the test, and the cables of the pressure sensor and the acceleration sensor penetrate out of the fairing 2, so that the cables of the sensor are prevented from being damaged by water flow. On the premise of ensuring that the sensor cable passes through the interior of the fairing 2, the size of the fairing 2 is as small as possible, and the influence of the fairing on a flow field is reduced.
The top of the underwater navigation body model 1 is provided with a connecting rod threaded hole 10, the bottom ends of the head connecting rod 3 and the tail connecting rod 4 are both provided with connecting threads 14, and the connecting threads 14 are matched and connected with the connecting rod threaded hole 10.
The head connecting rod 3 is provided with a supporting hole 12, the tail connecting rod 4 is provided with a long circular supporting hole 13, the supporting hole 12 and the long circular supporting hole 13 are opposite to the side wall of the circulating water tank, the head supporting rod 5 penetrates through the supporting hole 12, the tail supporting rod 6 penetrates through the long circular supporting hole 13, a thread 15 is arranged on the tail supporting rod 6, the tail supporting rod 6 and the tail connecting rod 4 are fixed in position through the matching of the thread 15 and a hexagon nut 16, a scale mark is arranged on one side of the long circular supporting hole 13, the angle can be conveniently adjusted, the offset distance d can also be recorded, the offset distance d can be adjusted according to the length L between the head connecting rod 3 and the tail connecting rod 4 and the pitch angle theta required by the test, and the specific calculation formula is as follows: d is L · tan θ.
Furthermore, the head connecting rod 3, the tail connecting rod 4, the head supporting rod 5 and the tail supporting rod 6 can use a hollow tube structure on the premise of ensuring the structural strength, so that the structural weight is reduced. The cross sections of the fairing 2, the head connecting rod 3 and the tail connecting rod 4 are streamline, so that the influence of the head connecting rod 3 and the tail connecting rod 4 on a test flow field is reduced.
Rivers are comparatively disorderly among the circulating water tank, for better regular test section fluid state, set up guide plate 21, improve the experimental result accuracy.
The embodiment is a method for testing pulsating load of an underwater vehicle surrounding shell area, which comprises the following steps:
arranging a sensor: installing a pressure sensor and an acceleration sensor at a preset position of an underwater navigation body model 1 through a pressure sensor threaded hole 8 and an acceleration sensor stud 11, coating glue or winding a raw material belt at a sensor hole of the underwater navigation body model 1 for waterproof treatment, penetrating out cables of the pressure sensor and the acceleration sensor through a fairing 2, sealing the sensor installation large opening 9 by using screws, fixing the fairing 2 on the underwater navigation body model 1, and exposing out of the water surface when testing the fairing 2;
assembling a testing device: the head connecting rod 3 and the tail connecting rod 4 are fixed with the underwater navigation body model 1 by threads, the supporting holes 12 and the long circular supporting holes 13 are ensured to be over against the side wall of the circulating water tank, the head supporting rod 5 and the tail supporting rod 6 respectively penetrate through the supporting holes 12 and the long circular supporting holes 13, the tail supporting rod 6 is screwed and fixed by a hexagonal nut 16, the head supporting rod 5 and the tail supporting rod 6 cross over the side wall of the circulating water tank, the fixed iron block 7 crosses over the head supporting rod 5 and the tail supporting rod 6 and is placed on the edge of the side wall of the circulating water tank, and the fixed iron block 7 and the edge of the side wall of the circulating water tank are clamped by a G-shaped carpenter clamp 20;
starting a test, adjusting the flow velocity in the water tank by using a flow velocity control console of the circulating water tank, and acquiring data of pulsating pressure and vibration acceleration by using a data acquisition instrument and matched test software after the flow velocity is stable;
adjusting the position of the model: when the pitching angle of the underwater navigation body model 1 is changed, the G-shaped carpenter clamp 20 is loosened, the position of the head support rod 5 is kept still, the hexagon nut 16 is loosened, and the tail support rod 6 is adjusted to penetrate through different positions of the long circular support hole 13 and is fixed through the hexagon nut 16; when the incident flow angle of the underwater navigation body model 1 is changed, the included angles between the head support rod 5 and the tail support rod 6 and the side wall of the circulating water tank are changed.
And (4) finishing the test: and after the measurement task is completed by repeating the steps, adjusting the flow velocity in the water tank to be 0 by using the flow velocity control console of the circulating water tank, and closing the flow velocity control system after the water flow in the circulating water tank is static.
Splitting the testing device: after the test is finished, the G-shaped woodworking clamp 20 is loosened, the head support rod 5 and the tail support rod 6 are lifted, the underwater vehicle model 1 is taken out of the circulating water tank, the pressure sensor and the acceleration sensor for the test are taken out, and other parts of the test device are disassembled.
The embodiments of the invention disclosed above are intended merely to aid in the explanation of the invention. The examples are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention.
Claims (10)
1. The utility model provides an area pulsation load testing arrangement of enclosuring of body under water which characterized in that: the underwater navigation body model comprises an underwater navigation body model (1), a circulating water tank, a connecting part, a supporting part and a fixing part, wherein the connecting part comprises a head connecting rod (3) and a tail connecting rod (4), the head connecting rod (3) and the tail connecting rod (4) are respectively arranged at the head side and the tail side of the top of the underwater navigation body model (1), the head connecting rod (3) and the tail connecting rod (4) are both connected with the supporting part, the supporting part is connected with the side wall of the circulating water tank through the fixing part, guide plates (21) are arranged at both sides of the circulating water tank, the head part of the underwater navigation body model (1) faces the incoming flow direction of the circulating water tank, an enclosing shell is arranged on the underwater navigation body model (1) and downwards arranged along the vertical direction, a fairing (2) is arranged on the underwater navigation body model (1), and the fairing (2) is arranged between the head connecting rod (3) and the tail connecting rod (4), and an acceleration sensor and a pressure sensor are arranged on the underwater navigation body model (1).
2. The device for testing the pulsating load in the area of the hull of the underwater vehicle as claimed in claim 1, wherein: the support component comprises a head support rod (5) and a tail support rod (6), the head support rod (5) is perpendicularly connected with the head connecting rod (3), the tail support rod (6) is perpendicularly connected with the tail connecting rod (4), and the head support rod (5) and the tail support rod (6) are respectively connected with the side wall of the circulating water tank through fixing components.
3. The device for testing the pulsating load of the hull region of the underwater vehicle as claimed in claim 2, wherein: the fixing part comprises a fixing iron block (7) and a G-shaped woodworking clamp (20), the fixing iron block (7) is arranged at the two ends of the head supporting rod (5) and the tail supporting rod (6), and the G-shaped woodworking clamp (20) clamps the fixing iron block (7) and the edge of the side wall of the circulating water tank.
4. The device for testing the pulsating load of the hull region of the underwater vehicle as claimed in claim 1, wherein: the underwater navigation body model is characterized in that a pressure sensor threaded hole (8) is formed in the outer surface of the underwater navigation body model (1), a sensor installation large opening (9) is formed in the bottom of the underwater navigation body model (1), an acceleration sensor stud (11) is arranged inside the underwater navigation body model (1), the pressure sensor is connected with the outer surface of the underwater navigation body model (1) through the pressure sensor threaded hole (8), and the acceleration sensor is installed on the acceleration sensor stud (11) through the sensor installation large opening (9).
5. The device for testing the pulsating load in the area of the hull of the underwater vehicle as claimed in claim 4, wherein: the sensor installation is provided with bent plate (17) in big opening (9) outside, all be equipped with screw hole (18) on navigation body model (1), radome fairing (2) and bent plate (17) under water, radome fairing (2) and bent plate (17) all link to each other with navigation body model (1) under water through the cooperation of screw hole (18) and screw, all be provided with rubber gasket (19) between sensor installation big opening (9) and bent plate (17) and between radome fairing (2) and navigation body model (1) under water.
6. The device for testing the pulsating load of the hull region of the underwater vehicle as claimed in claim 1, wherein: and cables of the pressure sensor and the acceleration sensor penetrate out through the fairing (2).
7. The device for testing the pulsating load of the hull region of the underwater vehicle as claimed in claim 1, wherein: the underwater navigation body model is characterized in that a connecting rod threaded hole (10) is formed in the top of the underwater navigation body model (1), connecting threads (14) are arranged at the bottom ends of the head connecting rod (3) and the tail connecting rod (4), and the connecting threads (14) are matched and connected with the connecting rod threaded hole (10).
8. The device for testing the pulsating load of the hull region of the underwater vehicle as claimed in claim 2, wherein: support holes (12) are formed in the head connecting rod (3), long round support holes (13) are formed in the tail connecting rod (4), the support holes (12) and the long round support holes (13) are opposite to the side wall of the circulating water tank, the head supporting rod (5) penetrates through the support holes (12), the tail supporting rod (6) penetrates through the long round support holes (13), threads (15) are arranged on the tail supporting rod (6), the tail supporting rod (6) and the tail connecting rod (4) are fixed in position through the cooperation of the threads (15) and a hexagon nut (16), and scale marks are arranged on one side of each long round support hole (13).
9. The device for testing the pulsating load of the hull region of the underwater vehicle as claimed in claim 2, wherein: the nose connecting rod (3), the tail connecting rod (4), the nose supporting rod (5) and the tail supporting rod (6) are all hollow tube structures, and the cross sections of the fairing (2), the nose connecting rod (3) and the tail connecting rod (4) are streamline.
10. A method for testing the pulsating load testing device of the hull region of the underwater vehicle as claimed in claim 1, wherein: it comprises the following steps:
step 1: installing a pressure sensor and an acceleration sensor at a preset position of an underwater navigation body model (1) through a pressure sensor threaded hole (8) and an acceleration sensor stud (11), sealing the sensor and installing a large opening (9), fixing a fairing (2) on the underwater navigation body model (1), and exposing the fairing (2) out of the water surface during testing;
step 2: fixing a head connecting rod (3) and a tail connecting rod (4) with an underwater navigation body model (1), respectively penetrating a head supporting rod (5) and a tail supporting rod (6) through a supporting hole (12) and an oblong supporting hole (13), screwing and fixing the tail supporting rod (6), enabling a supporting part to stretch across the side wall of the circulating water tank, and fixing the supporting part on the circulating water tank through a fixing part;
and 3, step 3: regulating the flow velocity in the water tank by using a flow velocity control console of the circulating water tank, and after the flow velocity is stable, performing data acquisition of pulsating pressure and vibration acceleration by using a data acquisition instrument and matched test software;
and 4, step 4: when the pitching angle of the underwater navigation body model (1) is changed, the fixing part is loosened, the position of the head supporting rod (5) is kept still, and the tail supporting rod (6) is adjusted to penetrate through different positions of the long circular supporting hole (13) and then fixed; when the incident flow angle of the underwater navigation body model (1) is changed, the included angles between the head supporting rod (5) and the tail supporting rod (6) and the side wall of the circulating water tank are changed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210429616.5A CN115014632A (en) | 2022-04-22 | 2022-04-22 | Testing device and testing method for pulsating load of surrounding shell area of underwater vehicle |
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| CN202210429616.5A CN115014632A (en) | 2022-04-22 | 2022-04-22 | Testing device and testing method for pulsating load of surrounding shell area of underwater vehicle |
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