Improved amphibious vehicle

Abstract

The application discloses an improved amphibious small hovercraft, and relates to the technical field of hovercrafts, which comprises a main hull, an air cushion, a curtain, a propulsion system and a control system, wherein the main hull is divided into an upper hull layer, a middle hull layer and a lower hull layer from top to bottom; a driver cabin, a passenger cabin and a power fan are arranged from front to back on the upper hull layer; a supercritical CO2 power generation system, a switched reluctance speed regulation and a magnetic suspension centrifugal air compressor are arranged on the middle hull layer; a CO2 recovery chamber is arranged in the middle of the lower hull layer; and the air cushion and the curtain are arranged on the outer wall of the main hull. The application has high efficiency and strong adaptability, and can freely pass through water, marsh, ice and soft sand; the supercritical CO2 heat circulation system is not limited by temperature, and the improved hovercraft can replace fuel vehicles and new energy electric vehicles through technical innovation.

Description

Technical Field

[0001] This invention relates to the field of hovercraft technology, and specifically to an improved version of a small amphibious hovercraft. Background Technology

[0002] An air cushion vehicle (ACV) is an amphibious vehicle that relies on a high-pressure air cushion between its bottom and a supporting surface (water / land) to achieve levitation and travels at high speed through an air propulsion system. The core of the technology is to use air to replace water / land contact to eliminate frictional resistance. Its technological development has undergone hundreds of years of theoretical exploration.

[0003] In 1959, the British invented the hovercraft and successfully traversed the English Channel that same year. Hovercraft are highly specialized vehicles, with advantages in high speed, amphibious capability, and adaptability to complex terrain. However, their high energy consumption, high noise levels, high cost, and low reliability prevent them from becoming a mainstream land transportation mode. On land, they can only serve as special vehicles, playing a unique role in military rescue and specific geographical environments, and cannot replace efficient, economical, environmentally friendly, and mature mainstream transportation tools such as cars, trains, and buses. However, cars are prone to traffic jams and accidents due to road conditions and weather, and the US global petrodollar system further exacerbates the energy dilemma. Oil is a non-renewable energy source, resulting in fuel replenishment shortages. Various energy storage batteries share the common characteristic of intermittent energy transport, also exhibiting energy replenishment limitations.

[0004] The air cushion is generated and maintained by a high-powered air-lifting fan (driven by an aircraft / marine engine) that continuously injects high-pressure air into the air chamber at the bottom of the hull. The principle of the air cushion is that the high-pressure air forms a uniform pressure in the air chamber, lifting the hull upwards and creating a non-contact / micro-contact state between the hull and the supporting surface. The frictional resistance is reduced to less than 1 / 100 of that of traditional ships. A large-diameter air propeller is installed at the stern / top to generate thrust by ejecting airflow backwards. Therefore, hovercraft have high energy consumption and poor endurance, especially in small and medium-sized hovercraft, where this disadvantage is particularly prominent due to the limited space of the hull. Summary of the Invention

[0005] The purpose of this invention is to provide an improved version of a small amphibious hovercraft, which solves the problems of high energy consumption and poor range of hovercraft.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An improved amphibious small hovercraft includes a main hull, an air cushion, a curtain, a propulsion system, and a control system. The main hull is divided into an upper hull, a middle hull, and a lower hull from top to bottom. The upper hull houses a cockpit, a passenger cabin, and a power fan from front to back. The middle hull houses a supercritical CO2 power generation system in its center. Switched reluctance motors are connected to both ends of the supercritical CO2 power generation system. A magnetic levitation centrifugal air compressor is connected to the other end of each switched reluctance motor. A gas transmission pipe for downward transmission of high-pressure air is connected to the other end of the magnetic levitation centrifugal air compressor. A CO2 recovery chamber is located in the center of the lower hull. The lower end of the gas transmission pipe extends to the lower outer wall of the lower hull, and the pipe body is located on both sides of the CO2 recovery chamber.

[0008] The air cushion and curtain are provided on the lower outer wall of the main hull. The curtain is located outside the air cushion, and the lower part of the air cushion is provided with several air outlets.

[0009] Furthermore, in the upper channel of the supercritical CO2 power generation system, one-way valve one, one-way valve two, resistor one, and one-way valve three are arranged sequentially from front to back. Each of the one-way valve one, one-way valve two, and one-way valve three is equipped with a spring at its rear. The one-way valve three is conical in shape. A protective support ring is provided at the lower part of the CO2 recovery chamber.

[0010] Furthermore, the supercritical CO2 power generation system has a fan, a ratchet, and a second fan arranged sequentially from front to back on the central drive shaft. The inner wall of the front cavity of the first fan is provided with a small hole for strong wind cooling.

[0011] Furthermore, a console is located at the front of the inner side of the cockpit, and a steering wheel is located at the rear of the console. The lower shaft of the steering wheel is connected to the steering shaft via bevel gears. The steering shaft is connected to a transverse rack via bevel gears. Several steering gears are connected to the rear of the transverse rack, and the lower part of the steering gears is connected to a rudder via a steering connecting rod.

[0012] The main hull is equipped with pneumatic steering devices on both sides. Each pneumatic steering device includes a steering air guide pipe, a rotating disk, and a rotating air guide shaft. The air inlet of the steering air guide pipe is connected to the magnetic levitation centrifugal air compressor, and the air outlet of the steering air guide pipe is located outside the main hull. The rotating disk connected to the rotating air guide shaft is located in the middle of the steering air guide pipe. A gear is located at the other end of the rotating air guide shaft. Steering handles are located on both sides of the steering wheel. The lower part of the steering handles on the left and right sides is connected to a lower steering gear through a shaft. A steering wheel gear is located on the shaft at the bottom of the steering wheel.

[0013] A braking device is installed on the hull at the rear of the power fan. The braking device is equipped with a U-shaped metal frame. A lower rotating shaft is installed inside the lower frame. An upper rotating shaft with a shell is welded and fixed to the inner side of the upper part of the metal frame. A switched reluctance speed-regulating motor is connected to the left side of the lower rotating shaft. A forward and reverse controller is connected to the left side of the switched reluctance speed-regulating motor. A spring is installed inside the upper rotating shaft with a shell. Several nylon ropes are connected to the lower part of the spring. The lower part of the nylon ropes is fixed to the lower rotating shaft. An aluminum alloy roller shutter door is fixed to the lower side of the nylon ropes.

[0014] The power fan is driven by a high-power switched reluctance motor, which is advantageous due to its fast start-up response, ability to frequently and abruptly start and stop, and wide speed range (tens to hundreds of thousands of revolutions per minute). The improved hovercraft can achieve ultra-high speeds. Increasing the number of pole pairs in the switched reluctance motor reduces noise. The supercritical carbon dioxide power generation system's intake (carbon dioxide gas), exhaust (carbon dioxide gas), and carbon dioxide gas recovery chamber are all sealed together, eliminating gear transmission and making the entire system virtually silent. The improved hovercraft can be deployed in densely populated urban areas, replacing gasoline-powered vehicles and new energy electric vehicles.

[0015] The beneficial effects of this invention are as follows: This application combines high efficiency and strong adaptability, allowing it to freely traverse water surfaces, swamps, ice surfaces, and soft sand; its supercritical CO2 thermodynamic cycle system is not limited by temperature, enabling the opening of Arctic shipping routes without icebreakers. The modular hull design supports rapid replacement of power components and mission payloads, adapting to various scenarios such as emergency rescue, marine scientific research, and border patrol. It addresses the limitations of non-renewable fossil fuels and the shortcomings in resupply, and is also a breakthrough in dismantling the US petrodollar system hegemony and resolving the global energy dilemma.

[0016] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall lower layer structure according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the overall upper layer structure according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of component 5 shown in the present invention.

[0020] Figure 4 for Figure 2 The structural diagram shown in circle A.

[0021] Figure 5 This is a schematic diagram of the structure of component 6 shown in the present invention.

[0022] Explanation of reference numerals in the attached drawings: 1. Main hull; 2. Air cushion; 3. Curtain; 4. Air outlet; 5. Pneumatic steering device; 6. Braking device; 10. Upper hull; 11. Middle hull; 12. Lower hull; 50. Air duct; 51. Rotary disc; 52. Rotary air duct shaft; 53. Gear; 54. Lower steering gear; 55. Steering wheel gear; 60. Metal frame; 61. Lower rotating shaft; 62. Upper rotating shaft with shell; 63. Switched reluctance speed-regulating motor; 64. Forward and reverse controller; 65. Nylon rope; 66. Aluminum alloy roller shutter door; 100. Cockpit; 101. Passenger cabin; 10 2. Powered fan; 103. Control console; 104. Steering wheel; 105. Steering shaft; 106. Lateral rack; 107. Steering gear; 108. Rudder; 110. Supercritical CO2 power generation system; 111. Switched reluctance speed-regulating motor; 112. Magnetic levitation centrifugal air compressor; 113. Gas transmission pipe; 114. One-way valve I; 115. One-way valve II; 116. Resistor I; 117. One-way valve III; 120. CO2 recovery chamber; 121. Protective bracket; 122. Fan I; 123. Ratchet; 124. Fan II; 125. High-pressure cooling vent; Detailed Implementation

[0023] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0026] Please see Figure 1 An improved amphibious small hovercraft, as shown in a preferred embodiment of this application, includes a main hull 1, an air cushion 2, a curtain 3, a propulsion system, and a maneuvering control system. The main hull 1 is divided into an upper hull 10, a middle hull 11, and a lower hull 12 from top to bottom. The upper hull 10 has a cockpit 100, a passenger cabin 101, and a power fan 102 from front to back. A supercritical CO2 power generation system 110 is located in the middle of the middle hull 11. Two switched reluctance speed-regulating motors 111 are connected to the rear sides respectively. The other end of the switched reluctance speed-regulating motors 111 is connected to a magnetic levitation centrifugal air compressor 112. The other end of the magnetic levitation centrifugal air compressor 112 is connected to a gas transmission pipe 113 that transmits high-pressure air downwards. A CO2 recovery chamber 120 is provided in the middle of the lower layer 12 of the hull. The lower end of the gas transmission pipe 113 extends to the lower outer wall of the lower layer 12 of the hull. The pipe body of the gas transmission pipe 113 is located on the front and rear sides of the CO2 recovery chamber 120.

[0027] An air cushion 2 and a curtain 3 are provided on the lower outer wall of the main hull 1. The curtain 3 is located outside the air cushion 2, and several air outlets 4 are provided at the lower part of the air cushion 2.

[0028] In the upper channel of the supercritical CO2 power generation system 110, one-way valve 114, one-way valve 215, resistor 116, and one-way valve 317 are arranged sequentially from front to back. One-way valve 114, one-way valve 215, and one-way valve 317 are all equipped with springs at the rear. One-way valve 317 is conical. A protective bracket 121 is provided at the lower part of the CO2 recovery chamber 120.

[0029] The supercritical CO2 power generation system 110 has a fan 122, a ratchet 123, and a fan 2 124 arranged sequentially from front to back on the central drive shaft. The inner wall of the front cavity of the fan 122 is provided with a strong wind cooling hole 125.

[0030] A control console 103 is located at the front of the inner side of the cockpit 100. A steering wheel 104 is located at the rear of the control console 103. The lower shaft of the steering wheel 104 is connected to the steering shaft 105 via bevel gears. The steering shaft 105 is connected to the transverse rack 106 via bevel gears. Several steering gears 107 are connected to the rear of the transverse rack 106. The lower part of the steering gears 107 is connected to the rudder 108 via a steering connecting rod.

[0031] The main hull 1 is equipped with pneumatic steering devices 5 on both sides. The pneumatic steering devices 5 include a steering air guide pipe 50, a rotating disk 51, and a rotating air guide shaft 52. The air inlet end of the steering air guide pipe 50 is connected to the magnetic levitation centrifugal air compressor 112, and the air outlet end of the steering air guide pipe 50 is located outside the main hull 1. The middle of the steering air guide pipe 50 is equipped with a rotating disk 51 connected to the rotating air guide shaft 52. The other end of the rotating air guide shaft 52 is equipped with a gear 53. The steering wheel 104 is equipped with steering handles on both sides. The lower part of the steering handles on the left and right sides is connected to the lower steering gear 54 through the shaft. The lower shaft of the steering wheel 104 is equipped with a steering wheel gear 55.

[0032] The CO2 compressor on the left has a high rotational speed, a short piston stroke, and a large displacement, designed with a 10cm piston and a piston diameter of over 20cm. The phase change generator on the right has a piston diameter of 10cm and a piston stroke of 25cm, providing high torque for phase change power generation.

[0033] The piston on the left has a stroke of 10cm and a diameter of 20cm. The short piston stroke and large exhaust volume can provide the amount of working medium required for the phase change power generation on the right.

[0034] A brake device 6 is installed on the hull at the rear of the power fan 102. A U-shaped metal frame 60 is installed on the outside of the brake device 6. A lower rotating shaft 61 is installed in the lower frame of the metal frame 60. An upper rotating shaft 62 with a shell is welded and fixed to the upper inner side of the metal frame 60. A switched reluctance speed-regulating motor 63 is connected to the left side of the lower rotating shaft 61. A forward and reverse controller 64 is connected to the left side of the switched reluctance speed-regulating motor 63. A spring is installed inside the upper rotating shaft 62 with a shell. Several nylon ropes 65 are connected to the lower part of the spring. The lower part of the nylon ropes 65 is fixed to the lower rotating shaft 61. An aluminum alloy roller shutter door 66 is fixed to the lower side of the nylon ropes 65.

[0035] Figure 1 The CO2 compressors on the left and right sides have different speeds. The connection method is as follows: the inner circle of the ratchet is sleeved on the output shaft of the CO2 compressor, and the outer circle of the ratchet is embedded in the output shaft of the right piston.

[0036] The new supercritical carbon dioxide power generation technology uses CO2, which is flame-retardant, does not undergo chemical reactions, can undergo phase change to generate electricity, and can be recycled indefinitely, solving the problem of fuel supply shortage. As a power source for hovercraft, it has many advantages: replacing automobiles, inland waterway shipping, disaster relief, military rescue, low-altitude economy, marine economy, sightseeing tourism and other fields, and overcoming the technical defects of hovercraft.

[0037] Implementation Plan: Firstly, a double-layered, bright outer profile will be adopted, with both inner and outer layers featuring an uneven, honeycomb pattern. This design is inspired by a showerhead, which disperses the water pressure from a faucet, reducing the perceived impact of the water flow. It also reduces air resistance from the front and sides, particularly in windy conditions. For large military hovercraft, it will need to be equipped with laser weapons, sonic weapons, and electronic equipment for collecting, analyzing, and processing electromagnetic signal data to enhance combat effectiveness. Addressing the shortage of fuel supply and meeting the power demands of various electrical and electronic devices will also require the addition of propellers on both sides of the hovercraft. It will fly at sea-skimming altitudes, similar to a ground-effect vehicle, outside the detection range of enemy radar.

[0038] The air cushion layer suspends at a height of 10-30 cm, facilitating sharp turns. High-pressure airbags surround the hull. Resembling a drum in musical instruments, they bulge in the middle and taper inwards at the bottom, forming a circular outline with steel bars. External curtains are installed to prevent the leakage of large amounts of high-pressure air, which would generate high noise and dust. The curtains are relatively heavy; a small amount of high-pressure air cannot move them.

[0039] CO2 has a very low critical point, with a temperature of 31.1℃ and a pressure of 7.38MPa. It is easily compressed by a piston to obtain high-energy fluid power to drive another piston to generate electricity. The principle of starting a diesel engine in seconds is used, and it is assembled with a switched reluctance speed-regulating motor and a piston-connecting rod mechanism. CO2, as a working medium, is flame-retardant and does not undergo chemical reactions. However, at high temperatures, carbon cannot participate, so carbon steel is not used because carbon can reduce CO2 to CO at high temperatures. CO2 only undergoes a phase change, involving changes in volume and temperature, as well as the coexistence of gas and liquid, i.e., a supercritical state. This state contains high-energy fluid power. After cooling, it can be recycled and reused without the need for CO2 replenishment. CO2 can replace fossil fuels, addressing the shortcomings of non-renewable and unreplenishable fossil energy and achieving greater range. If supercritical CO2 is heated to 1000℃ and the pressure increased to over 32MPa, high-density energy supply can be achieved to meet high-energy-consuming demands.

[0040] The power generation module uses a switched reluctance motor. Because power generation is labor-saving and motors are highly efficient, switched reluctance motors are an energy feedback application, functioning as both a motor and a generator. Traditional generators' rotors, with their permanent magnets or windings, generate hysteresis and eddy current losses, as well as rotor copper or iron losses. The rotor of a switched reluctance motor is made of "passive" ferromagnetic material, generating torque solely through changes in magnetic reluctance, resulting in extremely low losses and no cogging torque. Since the rotor lacks permanent magnets, there is no attraction between the stator teeth (cogging effect), requiring less torque for starting and low-speed operation. The rotor consists only of a double salient pole junction made of stacked silicon steel sheets. The stator is more complex, uses direct current, has fewer leads, and a pair of radially opposite electromagnetic windings is called a "phase." Generally, it is divided into 6 / 4 (6 stator poles, 4 rotor poles) and 12 / 8 structures. A six-phase switched reluctance motor is used, requiring high-power applications with extremely high torque stability. The 12 / 8 structure requires high-density energy output, needing to meet the energy demands of two high-power magnetic levitation centrifugal air compressors and the thrust of a large fan. Its working principle is based on the magnetic flux closing along the shortest path, without cutting the magnetic flux lines, resulting in high electromagnetic torque and low starting current. When the starting current is 15% of the rated current, it can achieve 100% of the rated torque; when the starting current is 30% of the rated current, the starting torque can reach 250% of its rated torque. Furthermore, each phase winding and magnetic circuit is independent, generating electromagnetic torque within a certain shaft angle range, unlike traditional motors which require a rotating magnetic field to be generated by the combined action of the windings and magnetic circuits of each phase for proper operation. Traditional motors typically have a single energy source, unidirectional and irreversible energy conversion, and only one power switch. However, in switched reluctance motors, each phase winding and magnetic circuit is independent, with each phase operating independently. This allows each phase's circuit to be configured with an independent power switch and connected in parallel to a main power grid line. Because switched reluctance motors have strong single-phase fault operation capability and current regeneration capability, they are typical energy feedback power generation applications. Energy conversion is bidirectional, with both electrical and mechanical energy output. Power replacement can be performed without shutting down the machine, replacing the grid power supply according to the energizing sequence of each phase. This overcomes the limitations of a single source path for the magnetic field circuit and the unidirectional and irreversible nature of energy conversion. A fixed grid power supply is no longer needed, solving the energy problem for mobile applications. Because three types of high energy—electrical energy, mechanical energy, and supercritical high-energy fluid dynamics—coexist continuously, mutually generating and converting each other to form a complete closed loop, energy utilization efficiency is improved.

[0041] By adjusting the forward and reverse rotation controller to frequently and abruptly start and stop the switched reluctance speed-regulating motor, the rotating shaft can be driven to rotate in both directions. This works closely with the elastic potential energy of the spring to achieve braking by obstructing airflow.

[0042] In operation, the CO2 recovery chamber is first evacuated to a vacuum by the valve core, then filled with high-purity CO2 to reduce carbon dioxide formation. A motor in the front-end switching magneto-controlled speed motor unit is connected to the mains power supply, driving the CO2 compressor to draw CO2 from the recovery chamber into the compressor cylinder, reaching the critical point within seconds. Based on the starting principle of a diesel engine, the CO2 reaches the critical point within seconds using a tungsten-copper alloy resistance wire heating method to create a heating chamber. This ensures the CO2 at the critical point reaches a temperature of 1000℃ and a pressure of 32MPa, driving a piston at the rear to generate electricity. This piston has a striker at its top; in its initial state, the piston is stationary. After being heated for several minutes by a tungsten-copper alloy resistance wire to reach a temperature of 1000℃ and a pressure of 32MPa, the electrical connections at both ends are then made so that a motor at the rear can rotate to drive the piston to open the conical check valve. The temperature of 1000℃ and the pressure of 32MPa will violently and continuously push the piston at high speed to generate electricity. After the motor at the rear generates electricity, the power supply from the grid can be replaced with the power supply from the front end according to the energizing sequence of each phase. The grid power supply is no longer needed. However, each phase cannot be replaced at the same time. Each phase must be replaced one by one according to the energizing sequence of each phase. The direction of rotor rotation is not related to the direction of current, but to the energizing sequence of each phase. The operation is carried out without stopping the machine, and the rotation direction of the rotors at both ends must be kept consistent.

[0043] The operator gently pushes the steering wheel 104, causing the lower steering shaft 105 to move the transverse rack 106, which in turn drives the steering gear 107 to rotate, causing the rudder 108 to deflect, thereby precisely controlling the course of the hovercraft. At the same time, pressing the steering lever causes the shaft linked to the lower part of the steering lever to move the lower steering gear 54 downward, so that the lower steering gear 54 meshes with the gear 53 for transmission. The rotating air guide shaft 52 drives the rotating disk 51 to deflect synchronously, and the airflow in the steering air guide pipe 50 begins to pass through the rotating disk 51. The airflow reaction force immediately corrects the hull attitude. The switched reluctance speed-regulating motor 63 in the braking device 6 starts and stops precisely under the control of the forward and reverse controller 64, driving the lower rotating shaft 61 to wind and unwind the nylon rope 65, so that the aluminum alloy roller shutter door 66 can be raised and lowered smoothly. The spring-loaded energy release process is stable and controllable. The supercritical CO2 system is deeply coupled with the hovercraft's power chain. The CO2 recovery chamber 120 is deeply involved in the energy cycle, converting waste heat gradient into electrical energy. The switched reluctance speed-regulating motor 111 has a wide-frequency speed regulation characteristic that is highly matched with the speed curve of the supercritical CO2 turbine, achieving millisecond-level response in the kinetic energy recovery process and significantly improving energy utilization efficiency. The magnetically levitated centrifugal air compressor 112 provides a stable high-pressure airflow, ensuring its oil-free, low-vibration, and high-reliability characteristics.

[0044] In summary, this invention provides an improved amphibious small hovercraft that combines high efficiency and strong adaptability, allowing it to move freely on water, swamps, ice, and soft sand. Its supercritical CO2 thermodynamic cycle system is not limited by temperature, enabling it to open up Arctic shipping routes without icebreakers. The modular hull design supports rapid replacement of power components and mission payloads, adapting to various scenarios such as emergency rescue, marine scientific research, and border patrol. It addresses the limitations of non-renewable fossil fuels and the shortcomings in resupply, and is also a breakthrough in dismantling the US petrodollar system and resolving the global energy dilemma.

[0045] Now, the national highway network is widespread, with roads connecting every village. Roads are paved with cement or asphalt, extending to fields and roadsides. The roads are almost free of dust and mud, making them ideal for the widespread use of hovercraft.

[0046] It is recommended to adopt grade-separated transportation, with elevated bridges or tunnels built at intersections to prevent damage from vehicles that come from the side.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An improved version of a small amphibious hovercraft, comprising a main hull (1), an air cushion (2), a curtain (3), a propulsion system, and a maneuvering control system, characterized in that, The main hull (1) is divided into an upper hull (10), a middle hull (11), and a lower hull (12) from top to bottom. The upper hull (10) is equipped with a cockpit (100), a passenger cabin (101), and a power fan (102) from front to back. The middle hull (11) is equipped with a supercritical CO2 power generation system (110) in the middle. The supercritical CO2 power generation system (110) is connected to a switched reluctance speed-regulating motor (111) on both the front and rear sides. (111) is connected to a magnetically levitated centrifugal air compressor (112) at one end. The other end of the magnetically levitated centrifugal air compressor (112) is connected to a gas transmission pipe (113) that transmits high-pressure air downwards. A CO2 recovery chamber (120) is provided in the middle of the lower layer (12) of the hull. The lower end of the gas transmission pipe (113) extends to the lower outer wall of the lower layer (12) of the hull. The pipe body of the gas transmission pipe (113) is located on the front and rear sides of the CO2 recovery chamber (120). The air cushion (2) and curtain (3) are provided on the lower outer wall of the main hull (1). The curtain (3) is located on the outside of the air cushion (2). The lower part of the air cushion (2) is provided with several air outlets (4).

2. An improved version of the amphibious small hovercraft as described in claim 1, characterized in that, The supercritical CO2 power generation system (110) has a series of one-way valves arranged from front to back in the upper channel, including one-way valve 1 (114), one-way valve 2 (115), resistor 1 (116), and one-way valve 3 (117). Each of the one-way valves 1 (114), 2 (115), and 3 (117) has a spring at its rear. The one-way valve 3 (117) is conical. The CO2 recovery chamber (120) has a protective support ring (121) at its lower part.

3. An improved version of the amphibious small hovercraft as described in claim 2, characterized in that, The supercritical CO2 power generation system (110) has a fan 1 (122), a ratchet (123), and a fan 2 (124) arranged sequentially from front to back on the central drive shaft. The inner wall of the front cavity of the fan 1 (122) is provided with a strong wind cooling hole (125).

4. An improved version of the amphibious small hovercraft as described in claim 1, characterized in that, The cockpit (100) has a control console (103) at the front of its inner side, and a steering wheel (104) at the rear of the control console (103). The lower shaft of the steering wheel (104) is connected to the steering shaft (105) via bevel teeth. The steering shaft (105) is connected to the transverse rack (106) via bevel teeth. The rear of the transverse rack (106) is connected to several steering gears (107). The lower part of the steering gears (107) is connected to the rudder (108) via a steering connecting rod. The main hull (1) is provided with pneumatic steering devices (5) on both sides. The pneumatic steering devices (5) include a steering air guide pipe (50), a rotating disk (51), and a rotating air guide shaft (52). The air inlet end of the steering air guide pipe (50) is connected to the magnetic levitation centrifugal air compressor (112), and the air outlet end of the steering air guide pipe (50) is located outside the main hull (1). The rotating disk (51) connected to the rotating air guide shaft (52) is located in the middle of the steering air guide pipe (50). The other end of the rotating air guide shaft (52) is provided with a gear (53). The steering wheel (104) is provided with steering handles on both sides. The lower part of the steering handles on the left and right sides is connected to the lower steering gear (54) through the shaft. The lower part of the steering wheel (104) is provided with a steering wheel gear (55).

5. An improved version of the amphibious small hovercraft as described in claim 1, characterized in that, A brake device (6) is provided on the hull at the rear of the power fan (102). A U-shaped metal frame (60) is provided on the outside of the brake device (6). A lower rotating shaft (61) is provided in the lower frame of the metal frame (60). An upper rotating shaft (62) with a shell is welded and fixed on the upper inner side of the metal frame (60). A switched reluctance speed-regulating motor (63) is connected to the left side of the lower rotating shaft (61). A forward and reverse controller (64) is connected to the left side of the switched reluctance speed-regulating motor (63). A spring is provided inside the upper rotating shaft (62) with a shell. Several nylon ropes (65) are connected to the lower part of the spring. The lower part of the nylon ropes (65) is fixed on the lower rotating shaft (61). An aluminum alloy roller shutter door (66) is fixed to the lower side of the nylon ropes (65).

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