Amphibious assault landing carrier and amphibious dock landing ship
By loading the amphibious assault vehicle in the rear compartment of the landing craft as the top pushing force, efficient water navigation of the amphibious assault vehicle is achieved, and a three-dimensional multi-layer dock bin is set up on the amphibious dock landing ship, the slow navigation speed of the amphibious assault vehicle is solved. The problem of insufficient number of landing vehicles for landing on the beach has achieved more efficient landing operations across the sea.
Patent Information
- Application Number
- CN202211744342.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-30
- Publication Date
- 2025-02-07
AI Technical Summary
The existing amphibious assault vehicles are sailing on the water due to the small length coefficient and the large wave resistance, which makes the speed difficult to increase. At the same time, the number of landing vehicles for landing on the beach is insufficient, resulting in the cross-sea landing operations requiring wave-by-wave delivery, which in turn extends the operation. process.
By loading the amphibious assault vehicle in the rear compartment of the landing craft as the top propulsion, the water navigation of the amphibious assault landing vehicle is realized, and a three-dimensional multi-layer dock warehouse is set up on the amphibious dock landing ship to increase the scale of single-ship force delivery.
Achieve higher water speeds of amphibious assault landing vehicles, reduce wave resistance, improve firepower and maneuverability of landing on the beach, and reduce costs, solve the problem of insufficient number of landing vehicles, and improve large-scale sea traversal. Efficiency of login combat.
Smart Images
Figure CN119388921A_ABST
Abstract
Description
[Technical field]
[0001] The present invention relates to an amphibious landing combat ship, and in particular to an amphibious assault landing vehicle and an amphibious dock landing ship equipped with the vehicle. [Background technology]
[0002] Increasing the water speed of amphibious assault vehicles is an important factor in reducing the probability of being damaged by enemy fire during the navigation phase.
[0003] Due to the limitation of the amphibious assault vehicle's body size and the interference of the land-based walking mechanism such as tracks and road wheels, its water navigation resistance is significantly greater than that of traditional displacement ships, especially the wave-making resistance and accessory resistance in the high-speed navigation stage are the key negative factors. Therefore, the existing technical route to reduce the water navigation resistance of amphibious assault vehicles is mainly based on the combination of water-skiing hull with front and rear water skis, supplemented by the retractable design of the land-based walking mechanism, thereby reducing the navigation resistance. Even so, under the existing power level, it is still difficult for water-skiing amphibious assault vehicles to break through the wave-making resistance barrier and achieve the ideal gliding state, resulting in its maximum speed being significantly lower than that of typical military ships. For example, my country's export-type VN16 amphibious assault vehicle is equipped with a 1,500 horsepower power and a power density of 50 horsepower / ton. Its maximum water speed is only 13.5 knots, while the power density of a typical frigate is only 5 horsepower / ton, and the power density of a destroyer is 10 horsepower / ton, and the corresponding maximum speeds can reach 25 knots and 30 knots respectively. It can be seen that the cost-effectiveness of the water-skiing technology route in reducing resistance and increasing speed is not ideal.
[0004] On the other hand, in order to reduce vehicle weight and increase water speed, the armor protection level of amphibious assault vehicles is weaker than that of typical armored vehicles, which is reflected in the reduction of armor thickness and the change of armor material from steel to aluminum alloy. In high-intensity amphibious landing assault operations, main battle tanks often cooperate with traditional heavy armored synthetic equipment such as infantry fighting vehicles to take landing craft, especially high-speed air cushion craft, to land and assault.
[0005] Corresponding to the large number of existing heavy-duty synthetic equipment, the number of vehicles used to carry heavy-duty synthetic equipment for beach landing, such as landing craft, especially new-type vehicles represented by high-speed hovercraft, is significantly small. This is directly related to the high cost of hovercraft, which uses gas turbines as power. For example, the LCAC hovercraft of foreign armies can carry an M1 main battle tank or two M2 infantry fighting vehicles at a time, and the cost is as high as 23 million US dollars, which is several times the cost of the main battle tank itself. The relative shortage of beach landing vehicles has resulted in the limitation that sea-crossing landing operations need to be deployed in waves, the combat process is prolonged, and the combat risk is increased.
[0006] Furthermore, the amphibious dock landing ships currently in service, which are used in conjunction with amphibious assault vehicles and beach landing vehicles, are all designed with single-deck docks, and the number of amphibious assault vehicles or beach landing craft that can be carried is limited. Under the demand for large-scale amphibious sea crossing landing operations, there is still room for improvement in the troop delivery capability of a single ship. [Summary of the invention]
[0007] Based on the above-mentioned deficiencies of the prior art, the present invention provides an amphibious assault landing vehicle, which uses an amphibious assault vehicle as a jacking force, carries a main battle tank and an infantry fighting vehicle to carry out beach landing assault operations, and its water speed is faster than the independent navigation speed of the amphibious assault vehicle.
[0008] The present invention further provides an amphibious dock landing ship that can carry the aforementioned amphibious assault landing vehicle. The amphibious dock landing ship is provided with a three-dimensionally arranged multi-layer dock. The scale of troop deployment of a single ship can be increased from the existing battalion level to the brigade level.
[0009] An amphibious assault landing vehicle, comprising:
[0010] A landing craft, the landing craft comprising: a front cabin, a rear cabin, and a detachable partition between the front and rear cabins;
[0011] An amphibious assault vehicle, the amphibious assault vehicle comprising: a water jet propulsion device;
[0012] The amphibious assault vehicle is loaded in the rear cabin of the landing craft, and the amphibious assault landing vehicle realizes water navigation by means of the water thruster as a top propulsion force;
[0013] Compared with the prior art, the above-mentioned amphibious assault landing vehicle has at least the following beneficial effects:
[0014] (1) The amphibious assault vehicle is both a vehicle and a ship, which is its core feature. Its external dimensions are subject to the rigid requirement of ensuring land mobility. The length-to-width ratio of the vehicle body is about 2:1. This ratio is too small for a ship, or the slenderness coefficient is too small. The weight of the vehicle body is not fully distributed along the length direction, which is the primary factor that makes it difficult to reduce the wave-making resistance when sailing at high speed. At the same time, the land walking system of the amphibious assault vehicle generates resistance as an accessory when sailing on water, which is also an important aspect that makes it difficult to increase the speed. Different from the prior art, the present invention loads the amphibious assault vehicle on the rear cabin of the landing craft as a top propulsion source to push the amphibious assault landing vehicle as a whole to sail on the water, thereby avoiding the two negative factors of the slenderness coefficient being too small and the wave-making resistance being too large when the amphibious assault vehicle sails alone in the water, and the land walking system is exposed to the water to generate additional resistance, thereby achieving a higher speed than the amphibious assault vehicle sailing alone on the water. When sailing on water, the amphibious assault landing vehicle as a whole has an aspect ratio closer to that of a slender, high-speed displacement ship, that is, it has a smaller wave-making resistance coefficient; when approaching the shore, the amphibious assault vehicle separates from the landing craft and goes ashore on its own, and quickly recovers its inherent land maneuverability.
[0015] (2) The amphibious assault landing vehicle can achieve the effect of coordinated landing assault with the amphibious assault vehicle as the top propulsion force and carrying main battle tanks and infantry fighting vehicles, thereby achieving a rebalance in the firepower, water mobility, land mobility and comprehensive protection of beach assault combat equipment, thereby improving the effect of coordinated combat and reducing combat losses.
[0016] (3) Compared with traditional landing craft, especially hovercraft, the amphibious assault landing vehicle has a significant low-cost advantage. The amphibious assault vehicles that constitute the amphibious assault landing vehicle are existing equipment and do not need to be purchased separately; since the landing craft has no power propulsion device, the cost is mainly concentrated in the hull steel and welding process. The overall cost is estimated to be around one million RMB, which is equivalent to several rounds of ammunition for a main battle tank; compared with the hovercraft, which is several times the cost of a main battle tank, the low-cost advantage is prominent. The post-war residual value of the landing craft is also high.
[0017] (4) The amphibious assault landing vehicle is inexpensive and easy to mass-produce. When equipped with the existing main battle tanks and amphibious assault vehicles, it will help eliminate the long-standing problem of large-scale sea crossing landing operations, such as too many vehicles and too few ships, and the need to deploy troops in waves, which will prolong the battle process. Take the example of a one-way amphibious crossing distance of 40 nautical miles, carrying three main battle tanks to land: the hovercraft has a speed of 40 knots and can only carry one main battle tank at a time. The total round-trip distance for transporting three main battle tanks is 40×5=200 nautical miles, which takes 5 hours; if the three main battle tanks are equipped with the amphibious assault landing vehicle in a 1:1 ratio, one wave can be deployed without round trips. As long as its speed is above 8 knots, the overall delivery time can be shortened compared to the hovercraft. When the amphibious assault landing vehicle carries a main battle tank and an infantry fighting vehicle and uses the amphibious assault vehicle as a top propulsion force to cross the water, it can achieve a speed of nearly 18 knots. See the embodiment for details.
[0018] In one embodiment, the above-mentioned amphibious assault landing vehicle further includes:
[0019] The watertight compartments are respectively arranged on the left and right sides of the landing craft and below the front cabin deck.
[0020] In one embodiment, the above-mentioned amphibious assault landing vehicle further includes:
[0021] A gap filler is arranged in the front cabin of the landing craft, and the gap filler is an air bag or a lightweight foam material.
[0022] The beneficial effects are: watertight compartments, air bags or gap fillers made of foamed materials, together with the inherent sealing properties of the aforementioned amphibious assault vehicles, main battle tanks and infantry fighting vehicles, provide reserve buoyancy for the amphibious assault landing vehicles, preventing water from entering the deck due to waves.
[0023] Unlike traditional ships with sealed decks, the amphibious assault landing vehicle fills most of the open deck space and prevents water from entering through waves through the inherent sealed body of the amphibious assault vehicle carried in the rear cabin of the landing craft and the main battle tank and infantry fighting vehicle carried in the front cabin of the landing craft, and uses air bags or foam materials to fill a small amount of gaps.
[0024] An amphibious dock landing ship is provided with a dock, and the above-mentioned amphibious assault landing vehicle is loaded in the dock.
[0025] The beneficial effect is that the dock landing ship that can sail on the ocean is used in coordination with the amphibious assault landing vehicle which has a limited assault distance but can directly land on the beach.
[0026] In one embodiment, the dock of the amphibious dock landing ship is arranged in a multi-layer three-dimensional manner. The amphibious assault landing vehicles are arranged in the dock in a column, a horizontal column or an oblique column.
[0027] The beneficial effect is that through the three-dimensional multi-layer dock, the amphibious dock landing ship can load a large number of amphibious assault landing vehicles in three dimensions to achieve large-scale armored assault force landing. The amphibious dock landing ship can increase the scale of troop delivery from the existing battalion level to the brigade level.
[0028] In one embodiment, the amphibious assault landing vehicles are arranged in a column or an oblique row in the dock, that is, the length direction of the assault landing vehicles is parallel to or at a certain angle to the length direction of the dock landing ship, and the amphibious assault landing vehicles enter the water from the dock opening located at the bow of the amphibious dock landing ship.
[0029] In one of the embodiments, the amphibious assault landing vehicles are arranged in a horizontal formation in the dock, that is, the length direction of the assault landing vehicles is perpendicular to the length direction of the dock landing ship, and the amphibious assault landing vehicles enter the water from an open dock hatch in the side direction of the amphibious dock landing ship, which is beneficial to shortening the overall unloading speed and shortening the enemy's reaction time.
Brief Description of the Drawings
[0030] Figure 1 A schematic diagram of a mid-longitudinal section of an amphibious assault landing vehicle in one embodiment of the present invention;
[0031] Figure 2 A schematic top view of an amphibious assault landing vehicle in one embodiment of the present invention;
[0032] Figure 3 A line drawing of a landing craft in one embodiment of the present invention;
[0033] Figure 4 A schematic diagram of a mid-longitudinal section of an amphibious dock landing ship in one embodiment of the present invention;
[0034] Figure 5 A schematic diagram of a mid-longitudinal section of an amphibious dock landing ship in one embodiment of the present invention;
[0035] Figure 6 It is a schematic plan view of an odd-numbered dock of an amphibious dock landing ship in one embodiment of the present invention;
[0036] Figure 7 It is a schematic plan view of an even-numbered-layer dock of an amphibious dock landing ship in one embodiment of the present invention; [Specific implementation method]
[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0038] The amphibious assault vehicle described in the present invention includes a family of vehicle equipment using the same type of chassis, power and water propulsion system, including at least an amphibious assault gun, an amphibious infantry fighting vehicle, an amphibious armored command vehicle, an amphibious armored repair vehicle, an amphibious obstacle-clearing vehicle, etc.
[0039] Figure 1-3 A first embodiment of the present invention is shown.
[0040] like Figure 1 , 2 As shown, the amphibious assault landing vehicle 1 includes a landing craft 11, the landing craft 11 includes a front cabin 111, a rear cabin 112, and a detachable partition 113 between the front and rear cabins; an amphibious assault vehicle 21, the amphibious assault vehicle 21 includes a water jet propeller 211; the amphibious assault vehicle 21 is loaded in the rear cabin 112 of the landing craft 11, and the amphibious assault landing vehicle 1 uses the water jet propeller 211 as a top propulsion force to achieve water navigation; when sailing on the water, the amphibious assault landing vehicle 1 as a whole has an aspect ratio closer to that of a slender high-speed displacement ship, that is, it has a smaller wave-making resistance coefficient, and achieves a higher speed than the amphibious assault vehicle 21 sailing on the water alone; when approaching the beach, the amphibious assault vehicle 21 separates from the landing craft 11 and goes ashore on its own, and quickly restores its inherent land mobility. The front cabin 111 of the landing craft carries a main battle tank 41 and an infantry fighting vehicle 31 for coordinated beach assault.
[0041] The watertight compartments 115, 116, the airbags or the gap fillers 51 of the foamed material, together with the inherent sealing properties of the aforementioned amphibious assault vehicle 21, main battle tank 41, and infantry fighting vehicle 31, provide reserve buoyancy for the amphibious assault landing vehicle 1 to prevent water from entering the deck due to waves.
[0042] In this embodiment, the landing craft 11 further includes a water inlet 114 located at the bottom of the rear cabin 112. Water flows into the water jet propulsion device 211 through the water inlet 114 and is accelerated to be ejected backwards, thereby propelling the amphibious assault landing vehicle 1 as a whole to navigate in the water.
[0043] Figure 3 The line drawing of the landing craft 11 described in this embodiment is shown, and the corresponding ship type data is as follows:
[0044]
[0045]
[0046] In this embodiment, the amphibious assault vehicle 21 is equipped with a 1500 horsepower engine, that is, 1103KW, and the efficiency of the water jet propulsion device 211 is 60%. The potential flow method + ITTC57 method is used to calculate the overall navigation resistance of the amphibious assault landing vehicle 1 in water, and the speed is predicted to be above 18 knots under given power conditions. The relevant data are as follows:
[0047] Speed.knot 15 16 17 18 18.5 Speed.m / s 7.72 8.23 8.74 9.26 9.52 Length Froude number 0.44 0.46 0.49 0.52 0.54 Displacement Froude number 1.12 1.19 1.27 1.34 1.38 Friction coefficient 0.001875 0.001858 0.001843 0.001828 0.001822 Viscosity subsidy 0.000800 0.000800 0.000800 0.000800 0.000800 Residual drag coefficient 0.003934 0.003853 0.003928 0.004045 0.004078 Total resistance coefficient of bare ship 0.006609 0.006511 0.006571 0.006673 0.006700 Total resistance.KN 42.39 47.51 54.13 61.63 65.37 Effective power.KW 327.1 391.1 473.4 570.7 622.1
[0048] Figure 4 A second embodiment of the present invention is shown.
[0049] The amphibious dock landing ship 2 includes two vertically arranged docks 221 and 222, and the amphibious assault landing vehicle 1 is loaded in the docks 221 and 222. In this embodiment, the amphibious dock landing ship 2 also includes a ballast water tank 21 and a vehicle roll-on / roll-off passage 22. By adjusting the ballast draft, the docks 221 and 222 reach the waterline respectively to implement the loading and unloading of the amphibious assault landing vehicle 1.
[0050] In this embodiment, the amphibious assault landing vehicles 1 are arranged in a column in the dock and enter and exit the dock through a hatch in the stern direction.
[0051] Figure 5 A third embodiment of the present invention is shown.
[0052] The amphibious dock landing ship 2 includes six-layer docks 221 to 226 arranged vertically in the midship, and the amphibious assault landing vehicle 1 is loaded in the docks 221 to 226. In this embodiment, the amphibious dock landing ship 2 also includes a ballast water tank 21 and a vehicle roll-on / roll-off passage 22. By adjusting the ballast draft, the docks 221 to 226 reach the waterline respectively to implement the loading and unloading of the amphibious assault landing vehicle 1.
[0053] In this embodiment, the amphibious assault landing vehicles 1 are arranged in a horizontal row in the dock, that is, the length direction of the amphibious assault landing vehicles 1 is perpendicular to the length direction of the amphibious dock landing ship 2, and the amphibious assault landing vehicles 1 enter and exit the dock through the hatch on the side of the amphibious dock landing ship 2.
[0054] Figure 6-7 A fourth embodiment of the present invention is shown.
[0055] Different from the third embodiment, in this embodiment, the arrangement of the amphibious assault landing vehicles 1 in their respective docks is an oblique formation, that is, the length direction of the assault landing vehicles 1 and the length direction of the dock landing ship 2 are uniformly at a certain angle, but the directions of the amphibious assault landing vehicles 1 carried in the upper and lower adjacent docks are at a 90-degree angle, that is, the bows of the amphibious assault landing vehicles 1 in the odd-numbered docks 221, 223, and 225 are close to the starboard side of the dock landing ship 2, and a vehicle passage 2211 is left on the port side, such as Figure 6 The bow of the amphibious assault landing vehicle 1 in the docks at even-numbered levels 222, 224, and 226 is close to the port side of the dock landing ship 2, and a vehicle passage 2221 is left on the starboard side, as shown in FIG. Figure 7 As shown. In this way, the loads on the left and right sides of the amphibious landing ship 2 are kept balanced. In this embodiment, the amphibious assault landing vehicle 1 enters and exits the dock through the hatch at the bow of the amphibious dock landing ship 2.
Claims
1. An amphibious assault landing vehicle, characterized in that: include: A landing craft, the landing craft comprising: a front cabin, a rear cabin, and a detachable partition between the front and rear cabins; An amphibious assault vehicle, the amphibious assault vehicle comprising: a water jet propulsion device; The amphibious assault vehicle is loaded in the rear cabin of the landing craft, and the amphibious assault landing vehicle realizes water navigation by means of the water thruster as a jacking force.
2. The amphibious assault landing vehicle according to claim 1, characterized in that: Also includes: The watertight compartments are respectively arranged on the left and right sides of the landing craft and below the front cabin deck.
3. The amphibious assault landing vehicle according to any one of claims 1-2, characterized in that: Also includes: A gap filler is arranged in the front cabin of the landing craft, and the gap filler is an air bag or a lightweight foam material.
4. An amphibious dock landing ship, characterized in that: The dock landing ship is provided with a dock, and the amphibious assault landing vehicle described in any one of claims 1 to 3 is loaded in the dock.
5. The amphibious dock landing ship according to claim 4, characterized in that: The dock is arranged in a multi-layered three-dimensional manner.
6. The amphibious dock landing ship according to any one of claims 4-5, characterized in that: The amphibious assault landing vehicles are arranged in the dock in a column, a horizontal column or an oblique column.