A method and system for mooring a hovercraft during a thrust test

Abstract

The application relates to the technical field of ship testing, and particularly discloses a mooring method and system for air cushion ship thrust testing, which comprises the following steps: parking an air cushion ship at a testing position on a land test field; fixing four mooring buoys on the bow left, the bow right, the stern left and the stern right of the air cushion ship along the left-right direction of the air cushion ship through four mooring ropes to limit the left-right position of the air cushion ship and avoid the air cushion ship moving left and right after cushioning during the test; connecting a first tow rope with the mooring buoy on the stern left and a second tow rope with the mooring buoy on the stern right; connecting the first end of a third tow rope with the first tow rope and the second tow rope, passing the second end of the third tow rope through a tow rope guide device, and sequentially connecting the second end of the third tow rope, a tension sensor, a fourth tow rope and a ground anchor; after the air cushion ship is cushioned, the first tow rope, the second tow rope and the air cushion ship can be kept horizontal, the air cushion ship can be prevented from being tilted and pulled to affect safety, and the accuracy of testing data can be ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of ship testing, and in particular to a cable fastening method and a cable fastening system for a hovercraft thrust test. Background Art

[0002] A hovercraft is a vessel between a displacement ship and an aircraft. To measure the thrust generated by its propulsion system, a thrust test is required. Similar to a conventional ship towing pile test, a hovercraft thrust test requires the vessel to be connected to a mooring point via a cable. With the hovercraft in a raised position, the propulsion main engine is operated at a certain power according to the test procedure, and the thrust is measured using a dynamometer connected to the cable. However, test accuracy is easily affected by the height of the hovercraft after being raised, as well as its tendency to drift side to side after being raised. Therefore, the harbor or dock towing facilities (including mooring towers, dock conditions, etc.) of typical shipyards are unlikely to meet the thrust test requirements for hovercraft.

[0003] Therefore, there is an urgent need for a cable securing method and a cable securing system for a hovercraft thrust test to solve the above technical problems. Summary of the Invention

[0004] The object of the present invention is to provide a cable fastening method and a cable fastening system for a hovercraft thrust test, so as to ensure the test accuracy of the hovercraft thrust.

[0005] In one aspect, the present invention provides a method for securing a cable for a hovercraft thrust test, the method comprising:

[0006] Parking the hovercraft at the test location on the land test site;

[0007] Fixing a first mooring bollard located on the left bow of the hovercraft, a second mooring bollard located on the right bow of the hovercraft, a third mooring bollard located on the left stern of the hovercraft, and a fourth mooring bollard located on the right stern of the hovercraft in sequence along the left and right directions of the hovercraft by four mooring cables;

[0008] Connecting the first end of the first streamer to the third bollard, and connecting the first end of the second streamer to the fourth bollard;

[0009] connecting the second end of the first streamer and the second end of the second streamer to the first end of the third streamer, wherein the connection points of the second end of the first streamer and the second end of the second streamer to the first end of the third streamer are located on the amidships line of the hovercraft and behind the hovercraft;

[0010] Passing the second end of the third streamer through the streamer guide device along the front-rear direction of the hovercraft and then connecting it to the first end of the tension sensor, and when the hovercraft is lifted, the first streamer and the second streamer can remain horizontal;

[0011] connecting the second end of the tension sensor to the first end of the fourth streamer;

[0012] The second end of the fourth streamer is connected to a ground anchor.

[0013] As a preferred technical solution for the cable fastening method for the hovercraft thrust test, the hovercraft is further provided with a first guide device and a second guide device. Along the front-rear direction of the hovercraft, the first guide device is located directly behind the third cable bollard, and the second guide device is located directly behind the fourth cable bollard.

[0014] Connecting the second end of the first streamer and the second end of the second streamer to the first end of the third streamer includes:

[0015] First, pass the second end of the first streamer through the first guide device, and pass the second end of the second streamer through the second guide device;

[0016] The second end of the first streamer and the second end of the second streamer are then connected to the first end of the third streamer.

[0017] As a preferred technical solution for the cable fastening method for the hovercraft thrust test, the first cable bollard located on the left bow of the hovercraft is fixed along the left and right directions of the hovercraft by the cable, including:

[0018] Along the left and right directions of the hovercraft, a first cable is used to connect a first cable bitt located on the left side of the bow of the hovercraft and a first mooring tower located on the left side of the bow of the hovercraft, respectively. The first cable maintains a set slack, and when the hovercraft is lifted, the height of the first cable bitt is the same as the height of the first mooring tower.

[0019] As a preferred technical solution for the cable fastening method for the hovercraft thrust test, the second cable bollard located on the right bow of the hovercraft is fixed along the left and right directions of the hovercraft by the cable, including:

[0020] Along the left and right directions of the hovercraft, a second cable is used to connect the second cable pile located on the right side of the bow of the hovercraft and the second mooring tower located on the right side of the bow of the hovercraft, and the second cable maintains a set slack. When the hovercraft is lifted, the height of the second cable pile is the same as the height of the second mooring tower.

[0021] As a preferred technical solution for the cable fastening method of the hovercraft thrust test, the third cable bollard located on the left stern of the hovercraft is fixed along the left and right directions of the hovercraft by the cable, including:

[0022] The third hawser is used to connect the third hawser bitt on the starboard side of the hovercraft and the third mooring tower on the starboard side of the hovercraft in the left-right direction of the hovercraft, and the third hawser maintains a set slack, and the height of the third hawser bitt is the same as that of the third mooring tower after the hovercraft is lifted.

[0023] The fourth hawser is used to connect the fourth hawser bitt on the starboard side of the hovercraft and the fourth mooring tower on the starboard side of the hovercraft in the left-right direction of the hovercraft, and the fourth hawser maintains a set slack, and the height of the fourth hawser bitt is the same as that of the fourth mooring tower after the hovercraft is lifted.

[0024] The fourth hawser is used to connect the fourth hawser bitt on the starboard side of the hovercraft and the fourth mooring tower on the starboard side of the hovercraft in the left-right direction of the hovercraft, and the fourth hawser maintains a set slack, and the height of the fourth hawser bitt is the same as that of the fourth mooring tower after the hovercraft is lifted.

[0025] The fourth hawser is used to connect the fourth hawser bitt on the starboard side of the hovercraft and the fourth mooring tower on the starboard side of the hovercraft in the left-right direction of the hovercraft, and the fourth hawser maintains a set slack, and the height of the fourth hawser bitt is the same as that of the fourth mooring tower after the hovercraft is lifted.

[0026] The hovercraft is lifted;

[0027] After the hovercraft is stabilized, the main propeller of the hovercraft is started;

[0028] When the current working condition of the main propeller meets the test requirements, the test value of the tension sensor is read as the thrust of the main propeller under the current working condition.

[0029] In another aspect, the application provides a hawser fixing system for hovercraft thrust test, which is used to implement the hawser fixing method for hovercraft thrust test according to any of the above-mentioned schemes, and comprises a first mooring tower, a second mooring tower, a third mooring tower, a fourth mooring tower, an anchor and a towline guide device arranged on land, and a first hawser, a second hawser, a third hawser, a fourth hawser, a first towline, a second towline, a third towline, a tension sensor, a fourth towline and an anchor.

[0030] The first mooring tower is arranged on the port side of the hovercraft, the second mooring tower is arranged on the starboard side of the hovercraft, the third mooring tower is arranged on the port side of the stern of the hovercraft, the fourth mooring tower is arranged on the starboard side of the stern of the hovercraft, the towline guide device and the anchor are arranged behind the hovercraft.

[0031] The first belt cable is used to connect the first mooring tower and a first mooring bollard located on the bow left of the hovercraft; the second belt cable is used to connect the second mooring tower and a second mooring bollard located on the bow right of the hovercraft; the third belt cable is used to connect the third mooring tower and a third mooring bollard located on the stern left of the hovercraft; the fourth belt cable is used to connect the fourth mooring tower and a fourth mooring bollard located on the stern right of the hovercraft;

[0032] The first end of the first streamer is used to connect to the third bollard, and the second end of the first streamer is used to connect to the first end of the third streamer; the first end of the second streamer is used to connect to the fourth bollard, and the second end of the second streamer is used to connect to the first end of the third streamer, the second end of the third streamer is used to pass through the streamer guide device and connect to the first end of the tension sensor, the second end of the tension sensor is used to connect to the first end of the fourth streamer, and the second end of the fourth streamer is used to connect to the ground anchor. When the hovercraft is lifted, the first streamer and the second streamer can remain horizontal.

[0033] As a preferred technical solution for the cable mooring system for the hovercraft thrust test, the tension sensor communicates wirelessly with a display device, and the display device is used to display the reading of the tension sensor.

[0034] As a preferred technical solution for the cable mooring system for the hovercraft thrust test, the cable mooring system for the hovercraft thrust test also includes a first guide device and a second guide device for installation on the hovercraft. Along the front-to-back direction of the hovercraft, the first guide device is located directly behind the third cable bollard, and the second guide device is located directly behind the fourth cable bollard. The second end of the first streamer is used to pass through the first guide device and be connected to the first end of the third streamer, and the second end of the second streamer is used to pass through the second guide device and be connected to the first end of the third streamer.

[0035] The cable fastening method for hovercraft thrust testing provided by the present invention has at least the following beneficial effects:

[0036] The cable securing method for the hovercraft thrust test includes:

[0037] The beneficial effects of the present invention are as follows:

[0038] The present invention provides a cable fastening method and a cable fastening system for a hovercraft thrust test. The cable fastening method for a hovercraft thrust test comprises: parking the hovercraft at a position to be tested in a land test site; fixing a first cable bollard located on the left bow of the hovercraft, a second cable bollard located on the right bow of the hovercraft, a third cable bollard located on the left stern of the hovercraft, and a fourth cable bollard located on the right stern of the hovercraft in sequence along the left and right directions of the hovercraft using four cables; connecting the first end of the first towline to the third cable bollard, connecting the first end of the second towline to the fourth cable bollard; and The second end of the first streamer and the second end of the second streamer are both connected to the first end of the third streamer, and the connection points of the second end of the first streamer and the second end of the second streamer and the first end of the third streamer are located on the midship line of the hovercraft and behind the hovercraft; along the front and rear direction of the hovercraft, the second end of the third streamer is passed through the streamer guide device and connected to the first end of the tension sensor, and when the hovercraft is lifted, the first streamer and the second streamer can remain horizontal; the second end of the tension sensor is connected to the first end of the fourth streamer; and the second end of the fourth streamer is connected to the ground anchor. The cable fastening method for the hovercraft thrust test uses four cables to fix the first cable bollard located on the left bow of the hovercraft, the second cable bollard located on the right bow of the hovercraft, the third cable bollard located on the left stern of the hovercraft, and the fourth cable bollard located on the right stern of the hovercraft in sequence along the left and right directions of the hovercraft, thereby limiting the left and right position of the hovercraft and effectively solving the problem of the left and right movement of the hovercraft after being lifted during the test; by arranging the tow cable guide device, when the hovercraft is lifted, the first tow cable and the second tow cable can be kept horizontal, and the hovercraft can also be kept horizontal, thereby preventing the hovercraft cushion from being tilted and pulled, which may affect the safety of the hovercraft, and ensuring the accuracy of the hovercraft thrust test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Flowchart of a cable securing method for a hovercraft thrust test according to an embodiment of the present invention;

[0040] Figure 2 A side view of a cable securing system for a hovercraft thrust test according to an embodiment of the present invention;

[0041] Figure 3 FIG1 is a bow view of a cable mooring system for a hovercraft thrust test according to an embodiment of the present invention;

[0042] Figure 4 1. A top view of a cable securing system for a hovercraft thrust test according to an embodiment of the present invention.

[0043] In the picture:

[0044] 100. Hovercraft;

[0045] 1. First mooring tower; 2. Second mooring tower; 3. Third mooring tower; 4. Fourth mooring tower; 5. First bollard; 6. Second bollard; 7. Third bollard; 8. Fourth bollard; 9. Towline guide device; 91. Guide tower; 92. Guide wheel; 10. First belt cable; 11. Second belt cable; 12. Third belt cable; 13. Fourth belt cable; 14. First towline; 15. Second towline; 16. Third towline; 17. Tension sensor; 18. Fourth towline; 19. Ground anchor; 20. First guide device; 21. Second guide device. DETAILED DESCRIPTION

[0046] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0049] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0050] A hovercraft is a vessel between a displacement ship and an aircraft. To measure the thrust generated by its propulsion system, a thrust test is required. Similar to a conventional ship towing pile test, a hovercraft thrust test requires the vessel to be connected to a mooring point via a cable. With the hovercraft in a raised position, the propulsion main engine is operated at a certain power according to the test procedure, and the thrust is measured using a dynamometer connected to the cable. However, test accuracy is easily affected by the height of the hovercraft after being raised, as well as its tendency to drift side to side after being raised. Therefore, the harbor or dock towing facilities (including mooring towers, dock conditions, etc.) of typical shipyards are unlikely to meet the thrust test requirements for hovercraft.

[0051] In this regard, this embodiment provides a method for securing a cable for a hovercraft thrust test to solve the above problem. The method for securing a cable for a hovercraft thrust test can be implemented by a cable securing system for a hovercraft thrust test.

[0052] Specifically, if Figure 1 As shown, the cable fastening method for the hovercraft thrust test includes the following steps:

[0053] S100: Parking the hovercraft 100 at a test location on a land test site.

[0054] Since the hovercraft 100 can travel on land or in water, and the testing environment in water is more complex, the harbor or dock towing facilities of general shipyards are difficult to meet the requirements. Therefore, the hovercraft 100 can be tested in a land test site, and the testing environment on land is more stable.

[0055] S200: Using four cables, a first bollard 5 located on the left bow of the hovercraft 100, a second bollard 6 located on the right bow of the hovercraft 100, a third bollard 7 located on the left stern of the hovercraft 100, and a fourth bollard 8 located on the right stern of the hovercraft 100 are fixed in sequence along the left and right directions of the hovercraft 100.

[0056] Specifically, fixing the first bollard 5 located on the bow left of the hovercraft 100 with a cable along the left-right direction of the hovercraft 100 includes: connecting the first bollard 5 located on the bow left of the hovercraft 100 and the first mooring tower 1 located on the bow left of the hovercraft 100 with the first cable 10 along the left-right direction of the hovercraft 100, respectively, and maintaining a set slack in the first cable 10. When the hovercraft 100 is lifted, the height of the first bollard 5 is the same as the height of the first mooring tower 1. The height of the first bollard 5 is also the height of the connection point between the first cable 10 and the first bollard 5. The first cable 10 is connected to the top of the first mooring tower 1. The height of the first mooring tower 1 is the height of the connection point between the first cable 10 and the first mooring tower 1.

[0057] The second bollard 6 located at the bow right of the hovercraft 100 is fixed to the hovercraft 100 by a cable along the left-right direction of the hovercraft 100. The second bollard 6 located at the bow right of the hovercraft 100 and the second mooring tower 2 located at the bow right of the hovercraft 100 are connected to each other along the left-right direction of the hovercraft 100 by a second cable 11. The second cable 11 maintains a set slack. When the hovercraft 100 is lifted, the height of the second bollard 6 is the same as the height of the second mooring tower 2. The height of the second bollard 6 is the height of the connection point between the second cable 11 and the second bollard 6. The second cable 11 is connected to the top of the second mooring tower 2. The height of the second mooring tower 2 is the height of the connection point between the second cable 11 and the second mooring tower 2.

[0058] The method of securing the third bollard 7 located on the left stern of the hovercraft 100 with a cable along the left-right direction of the hovercraft 100 includes: connecting the third bollard 7 located on the left stern of the hovercraft 100 and the third mooring tower 3 located on the left stern of the hovercraft 100 with a third cable 12 along the left-right direction of the hovercraft 100, respectively. The third cable 12 maintains a set slack, and when the hovercraft 100 is lifted, the height of the third bollard 7 is the same as the height of the third mooring tower 3. The height of the third bollard 7 is the height of the connection point between the third cable 12 and the third bollard 7. The third cable 12 is connected to the top of the third mooring tower 3. The height of the third mooring tower 3 is the height of the connection point between the third cable 12 and the third mooring tower 3.

[0059] Fixing the fourth bollard 8 located at the right stern of the hovercraft 100 with a cable along the left-right direction of the hovercraft 100 includes: connecting the fourth bollard 8 located at the right stern of the hovercraft 100 and the fourth mooring tower 4 located at the right stern of the hovercraft 100 with a fourth cable 13 along the left-right direction of the hovercraft 100, respectively. The fourth cable 13 maintains a set slack, and when the hovercraft 100 is lifted, the height of the fourth bollard 8 is the same as the height of the fourth mooring tower 4. The height of the fourth bollard 8 is the height of the connection point between the fourth cable 13 and the fourth bollard 8. The fourth cable 13 is connected to the top of the fourth mooring tower 4. The height of the fourth mooring tower 4 is the height of the connection point between the fourth cable 13 and the fourth mooring tower 4.

[0060] Maintaining a set slack in the first, second, third, and fourth ribbon cables 10, 11, 12, and 13 prevents them from being taut during the lift of the hovercraft 100, potentially affecting the test. The specific set slack can be adjusted based on actual needs, but generally speaking, at the set slack, the four ribbon cables have slight slack. For example, as the ribbon cables move from the set slack to being taut along the left and right sides of the hovercraft 100, the displacement of the hovercraft 100 can be within 5% of its width.

[0061] In this embodiment, the first ribbon cable 10 , the second ribbon cable 11 , the third ribbon cable 12 and the fourth ribbon cable 13 are of the same length, which can further prevent the hovercraft 100 from moving left and right after being lifted.

[0062] In this embodiment, mooring rings are provided on the tops of the first mooring tower 1 , the second mooring tower 2 , the third mooring tower 3 and the fourth mooring tower 4 , and four belt cables are respectively connected to the mooring rings on the tops of the four mooring towers.

[0063] S300 : Connecting the first end of the first streamer cable 14 to the third bollard 7 , and connecting the first end of the second streamer cable 15 to the fourth bollard 8 .

[0064] S400: Connect the second end of the first streamer 14 and the second end of the second streamer 15 to the first end of the third streamer 16, and the connection points of the second end of the first streamer 14 and the second end of the second streamer 15 and the first end of the third streamer 16 are located on the midship line of the hovercraft 100 and behind the hovercraft 100.

[0065] In this embodiment, the first bollard 5 and the second bollard 6 are symmetrically arranged about the amidships line of the hovercraft 100. The first streamer 14 and the second streamer 15 are of equal length and are also symmetrically arranged about the amidships line of the hovercraft 100. This ensures that when the hovercraft 100 is propelled forward, the combined force exerted by the first streamer 14 and the second streamer 15 on the hovercraft 100 is directed along the amidships line, preventing the hovercraft 100 from moving sideways.

[0066] Optionally, the hovercraft 100 is further provided with a first guide device 20 and a second guide device 21. In the fore-aft direction of the hovercraft 100, the first guide device 20 is located directly behind the third bollard 7, and the second guide device 21 is located directly behind the fourth bollard 8. Connecting the second end of the first streamer 14 and the second end of the second streamer 15 to the first end of the third streamer 16 includes first passing the second end of the first streamer 14 through the first guide device 20 and the second end of the second streamer 15 through the second guide device 21; then connecting the second ends of the first streamer 14 and the second end of the second streamer 15 to the first end of the third streamer 16. This arrangement allows the first and second streamers 14, 15 to be guided and supported by the first and second guide devices 20, 21, preventing the first and second streamers 14, 15 from scraping against the hull during testing.

[0067] The first guide device 20 and the second guide device 21 have the same structure. Taking the first guide device 20 as an example, it can be configured as a roller supported by a bracket, and the first towline 14 is supported by the roller.

[0068] S500: Along the front-rear direction of the hovercraft 100, the second end of the third streamer 16 is passed through the streamer guide device 9 and connected to the first end of the tension sensor 17. When the hovercraft 100 is lifted, the first streamer 14 and the second streamer 15 can remain horizontal.

[0069] Specifically, when the hovercraft 100 is lifted, the portion of the third streamer 16 between the streamer guide 9 and its first end can also remain horizontal. The portion of the third streamer 16 between its second end and the streamer guide 9 is tilted toward the ground, so that the combined force exerted on the hovercraft 100 by the first streamer 14 and the second streamer 15 is horizontal, preventing the bow of the hovercraft 100 from tilting when the hovercraft 100 moves forward.

[0070] The streamer guide device 9 includes a guide tower 91 and a guide wheel 92 provided on the guide tower 91 , and the third streamer 16 is supported by the guide wheel 92 .

[0071] S600 : Connect the second end of the tension sensor 17 to the first end of the fourth streamer 18 .

[0072] The tension sensor 17 communicates wirelessly with the display device, which is used to display the reading of the tension sensor 17. This can avoid the safety risk caused by close readings in dangerous areas of the test.

[0073] S700 : Connect the second end of the fourth streamer cable 18 to the ground anchor 19 .

[0074] The cable fastening method for the hovercraft thrust test provided in this embodiment uses four cables to fix the first cable bollard 5 located on the left bow of the hovercraft 100, the second cable bollard 6 located on the right bow of the hovercraft 100, the third cable bollard 7 located on the left stern of the hovercraft 100, and the fourth cable bollard 8 located on the right stern of the hovercraft 100 in sequence along the left and right directions of the hovercraft 100. This can restrict the left and right position of the hovercraft 100, effectively solving the problem of the hovercraft 100 moving left and right after being lifted during the test. By providing the tow cable guide device 9, when the hovercraft 100 is lifted, the first tow cable 14 and the second tow cable 15 can remain horizontal, and the hovercraft 100 can also remain horizontal, thereby preventing the hovercraft 100 from being tilted and pulled, which may affect the safety of the hovercraft 100, and ensuring the accuracy of the thrust test data of the hovercraft 100.

[0075] Optionally, the cable fastening method for the hovercraft thrust test further includes the following steps after S700 .

[0076] S800: Lift the hovercraft 100.

[0077] S900: After the hovercraft 100 remains stable, the propulsion main engine of the hovercraft 100 is turned on.

[0078] S1000: When the current working condition of the propulsion main engine meets the test requirements, the test value of the tension sensor 17 is read as the thrust of the propulsion main engine under the current working condition.

[0079] The current operating condition of the propulsion main engine meets the test requirements, and the current output power of the propulsion main engine can be kept stable, and the output power is equal to the power required by the test or the difference between the two is within the set range.

[0080] Through steps S800 to S1000 , the thrust of the hovercraft 100 can be tested, and the accuracy of the test values ​​read can be ensured.

[0081] This embodiment further provides a cable securing system for a hovercraft thrust test, and the cable securing system for a hovercraft thrust test is used to implement the above-mentioned cable securing method for a hovercraft thrust test.

[0082] like Figures 2 to 4As shown, the cable mooring system for the hovercraft thrust test includes a first mooring tower 1, a second mooring tower 2, a third mooring tower 3, a fourth mooring tower 4, a ground anchor 19 and a towline guide device 9, as well as a first ribbon 10, a second ribbon 11, a third ribbon 12, a fourth ribbon 13, a first towline 14, a second towline 15, a third towline 16, a tension sensor 17, a fourth towline 18 and a ground anchor 19, which are arranged at a land test site.

[0083] In the left-right direction of the hovercraft 100, a first mooring tower 1 is located on the left side of the bow of the hovercraft 100, a second mooring tower 2 is located on the right side of the bow, a third mooring tower 3 is located on the left side of the stern, and a fourth mooring tower 4 is located on the right side of the stern. A towline guide 9 and a ground anchor 19 are both located at the rear of the hovercraft 100. A first cable 10 is used to connect the first mooring tower 1 to a first bollard 5 located on the left side of the bow of the hovercraft 100; a second cable 11 is used to connect the second mooring tower 2 to a second bollard 6 located on the right side of the bow of the hovercraft 100; a third cable 12 is used to connect the third mooring tower 3 to a third bollard 7 located on the left side of the stern of the hovercraft 100; and a fourth cable 13 is used to connect the fourth mooring tower 4 to a fourth bollard 8 located on the right side of the stern of the hovercraft 100. In this way, the left and right positions of the hovercraft 100 can be restricted, which can effectively solve the problem of the hovercraft 100 moving left and right after being lifted during the test.

[0084] The first end of the first streamer 14 is connected to the third bollard 7, and the second end of the first streamer 14 is connected to the first end of the third streamer 16. The first end of the second streamer 15 is connected to the fourth bollard 8, and the second end of the second streamer 15 is connected to the first end of the third streamer 16. The second end of the third streamer 16 is connected to the first end of the tension sensor 17 after passing through the streamer guide 9. The second end of the tension sensor 17 is connected to the first end of the fourth streamer 18, and the second end of the fourth streamer 18 is connected to the ground anchor 19. By providing the streamer guide 9, when the hovercraft 100 is lifted, the first and second streamers 14 and 15 can remain horizontal, and the hovercraft 100 can also remain horizontal, preventing the hovercraft 100 from being tilted and pulled, which may affect the safety of the hovercraft 100, and ensuring the accuracy of the thrust test data of the hovercraft 100.

[0085] Specifically, the streamer guide device 9 includes a guide tower 91 and a guide wheel 92 mounted on the guide tower 91. The third streamer 16 is supported by the guide wheel 92. When the hovercraft 100 is lifted, the portion of the third streamer 16 between the streamer guide device 9 and its first end can also remain horizontal, and the first streamer 14 and the second streamer 15 can also remain horizontal. As a result, the combined force exerted on the hovercraft 100 by the first streamer 14 and the second streamer 15 is horizontal, preventing the bow of the hovercraft 100 from tilting when the hovercraft 100 moves forward.

[0086] Optionally, the tension sensor 17 is in wireless communication with a display device for displaying the reading of the tension sensor 17. In this way, the safety risk of close reading in the dangerous area of the test can be avoided.

[0087] Optionally, the first guide device 20 and the second guide device 21 are further included for being installed on the air cushion vehicle 100, the first guide device 20 is located right behind the third bollard 7 along the front-rear direction of the air cushion vehicle 100, and the second guide device 21 is located right behind the fourth bollard 8, the second end of the first tow rope 14 is used for being connected with the first end of the third tow rope 16 by passing through the first guide device 20, and the second end of the second tow rope 15 is used for being connected with the first end of the third tow rope 16 by passing through the second guide device 21. In this way, the first tow rope 14 and the second tow rope 15 can be guided and supported by the first guide device 20 and the second guide device 21, and the first tow rope 14 and the second tow rope 15 can be prevented from scratching the hull during the test.

[0088] Obviously, the above-mentioned embodiments of the present application are merely examples for clarity and are not intended to limit the embodiments of the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A method for securing a cable for a hovercraft thrust test, characterized in that: include: Parking the hovercraft (100) at a test location on a land test site; A first mooring bollard (5) located on the left bow of the hovercraft (100), a second mooring bollard (6) located on the right bow of the hovercraft (100), a third mooring bollard (7) located on the left stern of the hovercraft (100), and a fourth mooring bollard (8) located on the right stern of the hovercraft (100) are fixed in sequence along the left and right directions of the hovercraft (100) by four mooring bollards; Connecting the first end of the first towline (14) to the third bollard (7), and connecting the first end of the second towline (15) to the fourth bollard (8); The second end of the first streamer (14) and the second end of the second streamer (15) are connected to the first end of the third streamer (16), and the connection points of the second end of the first streamer (14) and the second end of the second streamer (15) and the first end of the third streamer (16) are located on the midship line of the hovercraft (100) and behind the hovercraft (100); Along the front-rear direction of the hovercraft (100), the second end of the third towline (16) is passed through the towline guide device (9) and connected to the first end of the tension sensor (17), and when the hovercraft (100) is lifted, the first towline (14) and the second towline (15) can be kept horizontal; connecting the second end of the tension sensor (17) to the first end of the fourth tow cable (18); Connecting the second end of the fourth streamer cable (18) to a ground anchor (19); A first mooring bollard (5) fixed on the left bow of the hovercraft (100) along the left-right direction of the hovercraft (100) by a mooring cable comprises: Along the left and right directions of the hovercraft (100), a first mooring bollard (5) located on the bow left of the hovercraft (100) and a first mooring tower (1) located on the bow left of the hovercraft (100) are respectively connected by a first cable (10), and the first cable (10) maintains a set slack, and when the hovercraft (100) is lifted, the height of the first mooring bollard (5) is the same as the height of the first mooring tower (1); A second mooring bollard (6) fixed to the right bow of the hovercraft (100) along the left-right direction of the hovercraft (100) by a mooring cable comprises: Along the left and right directions of the hovercraft (100), a second mooring bollard (6) located on the bow right of the hovercraft (100) and a second mooring tower (2) located on the bow right of the hovercraft (100) are respectively connected by a second cable (11), and the second cable (11) maintains a set slack, and when the hovercraft (100) is lifted, the height of the second mooring bollard (6) is the same as the height of the second mooring tower (2); The third mooring bollard (7) located at the left stern of the air cushion vessel (100) and fixed along the left and right directions of the air cushion vessel (100) by a mooring cable comprises: Along the left and right directions of the hovercraft (100), a third mooring bollard (7) located on the left side of the stern of the hovercraft (100) and a third mooring tower (3) located on the left side of the stern of the hovercraft (100) are respectively connected by a third cable (12), and the third cable (12) maintains a set slack, and when the hovercraft (100) is lifted, the height of the third mooring bollard (7) is the same as the height of the third mooring tower (3); The fourth mooring bollard (8) fixed to the right stern of the hovercraft (100) by a mooring cable along the left and right directions of the hovercraft (100) comprises: Along the left and right directions of the hovercraft (100), a fourth mooring bollard (8) located on the right side of the stern of the hovercraft (100) and a fourth mooring tower (4) located on the right side of the stern of the hovercraft (100) are respectively connected by a fourth cable (13), and the fourth cable (13) maintains a set slack, and when the hovercraft (100) is lifted, the height of the fourth mooring bollard (8) is the same as the height of the fourth mooring tower (4).

2. The cable fastening method for hovercraft thrust test according to claim 1, characterized in that: The hovercraft (100) is further provided with a first guide device (20) and a second guide device (21), wherein along the front-rear direction of the hovercraft (100), the first guide device (20) is located directly behind the third bollard (7), and the second guide device (21) is located directly behind the fourth bollard (8); Connecting the second end of the first streamer (14) and the second end of the second streamer (15) to the first end of the third streamer (16) comprises: First, pass the second end of the first streamer (14) through the first guide device (20), and pass the second end of the second streamer (15) through the second guide device (21); The second end of the first streamer (14) and the second end of the second streamer (15) are then connected to the first end of the third streamer (16).

3. The cable fastening method for hovercraft thrust test according to any one of claims 1-2, characterized in that: The cable fastening method for the hovercraft thrust test further includes, after connecting the second end of the fourth towline (18) to the ground anchor (19): Lifting the hovercraft (100); After the hovercraft (100) remains stable, the propulsion main engine of the hovercraft (100) is turned on; When the current working condition of the propulsion main engine meets the test requirements, the test value of the tension sensor (17) is read as the thrust of the propulsion main engine under the current working condition.

4. A cable securing system for a hovercraft thrust test, characterized in that: A method for securing a cable for a hovercraft thrust test according to any one of claims 1 to 3, wherein the cable securing system for the hovercraft thrust test comprises a first mooring tower (1), a second mooring tower (2), a third mooring tower (3), a fourth mooring tower (4), a ground anchor (19), and a towline guide device (9), as well as a first cable (10), a second cable (11), a third cable (12), a fourth cable (13), a first towline (14), a second towline (15), a third towline (16), a tension sensor (17), and a fourth towline (18); Along the left-right direction of the hovercraft (100), the first mooring tower (1) is arranged on the left side of the bow of the hovercraft (100), the second mooring tower (2) is arranged on the right side of the bow of the hovercraft (100), the third mooring tower (3) is arranged on the left side of the stern of the hovercraft (100), and the fourth mooring tower (4) is arranged on the right side of the stern of the hovercraft (100), and the towline guide device (9) and the ground anchor (19) are both arranged at the rear of the hovercraft (100); The first cable (10) is used to connect the first mooring tower (1) and a first mooring bollard (5) located on the bow left of the hovercraft (100); the second cable (11) is used to connect the second mooring tower (2) and a second mooring bollard (6) located on the bow right of the hovercraft (100); the third cable (12) is used to connect the third mooring tower (3) and a third mooring bollard (7) located on the stern left of the hovercraft (100); and the fourth cable (13) is used to connect the fourth mooring tower (4) and a fourth mooring bollard (8) located on the stern right of the hovercraft (100); The first end of the first towline (14) is used to connect to the third mooring bollard (7), and the second end of the first towline (14) is used to connect to the first end of the third towline (16); the first end of the second towline (15) is used to connect to the fourth mooring bollard (8), and the second end of the second towline (15) is used to connect to the first end of the third towline (16); the second end of the third towline (16) is used to pass through the towline guide device (9) and then connect to the first end of the tension sensor (17); the second end of the tension sensor (17) is used to connect to the first end of the fourth towline (18), and the second end of the fourth towline (18) is used to connect to the ground anchor (19). When the hovercraft (100) is lifted, the first towline (14) and the second towline (15) can remain horizontal.

5. The cable securing system for hovercraft thrust test according to claim 4, characterized in that: The tension sensor (17) communicates wirelessly with a display device, and the display device is used to display a reading of the tension sensor (17).

6. The cable securing system for hovercraft thrust test according to claim 4, characterized in that: The invention also includes a first guide device (20) and a second guide device (21) for being installed on the hovercraft (100). Along the front-rear direction of the hovercraft (100), the first guide device (20) is located directly behind the third mooring bollard (7), and the second guide device (21) is located directly behind the fourth mooring bollard (8). The second end of the first towline (14) is used to pass through the first guide device (20) and be connected to the first end of the third towline (16). The second end of the second towline (15) is used to pass through the second guide device (21) and be connected to the first end of the third towline (16).

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