Ground effect vehicle based on water-skimming and its lifting method

Abstract

This invention relates to a ground effect vehicle (GEV) based on water-skimming lift and its lift-up method, belonging to the technical field of GEVs. It includes a hull, with GEVs fixedly mounted on both sides of the hull. Each GEV is connected to one side of a floating boat on its other end face, and side wings are mounted on the other side of the floating boat. A power system is fixedly mounted at the upper middle part of the hull, and a vertical stabilizer is fixedly mounted at the upper rear part of the hull, with its upper end face fixedly connected to the middle of a horizontal stabilizer. A water-skimming lift-up component is added to the bottom surface of the hull. By adding the water-skimming lift-up component, this invention allows the GEV to lift up during takeoff, with the forward gliding surface and the water-skimming lift-up component achieving the same angle of attack with the waterline. Furthermore, the water-skimming lift-up component increases the velocity and reduces the pressure of the water layer at the lower contact end, ultimately enabling the GEV to achieve a jump lift on the water surface.

Description

Technical Field

[0001] This invention relates to the field of ground effect vehicle technology, and in particular to a ground effect vehicle based on water-skimming assistance and its assistance method. Background Technology

[0002] Ground effect vehicles, as vehicles that utilize the ground effect to fly close to the water or ground, have the ability to fly stably at ultra-low altitudes over long distances within the ground effect zone and to fly high and overcome obstacles for short periods outside the ground effect zone.

[0003] However, the high-speed water flow generated during the takeoff and gliding of a ground effect vehicle (GEV) on water can create an adhesive force on the hull. Currently, a stepped hull can be used to help overcome this adhesive force, but takeoff of the GEV remains difficult. Existing methods simply address the problem by increasing engine power.

[0004] Therefore, there is an urgent need to develop a device to help improve the takeoff capability of ground effect vehicles. Summary of the Invention

[0005] In response to the shortcomings of the existing production technology, the applicant provides a ground effect vehicle based on water-skimming assisted takeoff and its takeoff assisted method, thereby helping to improve the takeoff capability of the ground effect vehicle and solving the problem of difficult takeoff of the ground effect vehicle.

[0006] The technical solution adopted in this invention is as follows: a ground effect vehicle based on water-skimming assistance includes a hull, ground effect wings are fixedly installed on both sides of the hull, and each ground effect wing is connected to one side of a floating boat on its other end face. Side wings are installed on the other side of the floating boat. A power system is fixedly installed at the upper middle part of the hull, and a vertical tail is fixedly installed at the upper rear part of the hull. The upper end face of the vertical tail is fixedly connected to the middle part of the horizontal tail. A water-skimming assistance component is added to the bottom surface of the hull.

[0007] As a further improvement to the above technical solution:

[0008] Preferably, the hull structure includes a front upper planing surface, an upper hull, a front lower planing surface, a front step, a rear planing surface, a rear step, and a device mounting assembly; the front upper planing surface is a tapered planing surface structure, the front lower planing surface is a smooth planing surface structure, and the front upper planing surface and the front lower planing surface together form the front planing surface; a front step is provided behind the front lower planing surface, and the rear planing surface and the rear step are sequentially provided along the length direction of the upper hull.

[0009] Preferably, a water-skimming assist component is installed between the front gliding surface and the front step, and a device mounting component is provided to match the water-skimming assist component.

[0010] Preferably, the structure of the device mounting assembly includes a structural perimeter plate, an upper sealing plate, a lower sealing plate opening, an upper sealing plate opening, a bearing mounting seat, and a lower sealing plate. The structural perimeter plate is fixedly connected to the hull structure around the bottom of the ship. The structural perimeter plate and the lower sealing plate together form a watertight structure at the opening of the forward sliding surface. The watertight structure is used to close the opening on the forward sliding surface that has been cut off at the front of the forward step. The upper sealing plate is fixedly connected to the top perimeter structure of the structural perimeter plate. The upper sealing plate and the lower sealing plate together form a gear compartment. A bearing mounting seat is provided above the lower sealing plate. An upper sealing plate opening is provided on the upper sealing plate, and a lower sealing plate opening is provided on the lower sealing plate.

[0011] Preferably, the structure of the water-skimming assist component comprises a small gear, a large gear, a hydraulic motor, bearings, and a water-skimming turntable. The hydraulic motor drives the large gear, and small gears are arranged on both sides of the large gear for gear transmission. Each small gear is connected to a corresponding bearing to rotate the water-skimming turntable. Both the small gear and the large gear are spur gears, and the large gear drives the two small gears on both sides to rotate in opposite directions.

[0012] Preferably, the structure of the water-skimming turntable includes a cylindrical disk, a spherical crown, a key, and a mounting shaft; the spherical crown is a curved surface structure, which integrates and fixes the cylindrical disk and the spherical crown to form a turntable shape; the mounting shaft is fixed at the center of the cylindrical disk, and a key is provided on the mounting shaft and connected to a pinion through the key.

[0013] A method for assisting the lift of a ground effect vehicle based on water-skimming lift includes the following steps:

[0014] Step 1: Raise your head during takeoff as the boat taxis, creating an angle of attack between the front skid surface of the hull and the waterline;

[0015] Step 2: The water-skimming turntable is perpendicular to the forward sliding surface, so that the spherical crown of the water-skimming turntable also has the same angle of attack as the horizontal plane;

[0016] Step 3: The two water float turntables on both sides rotate in opposite directions, and the water layer at the contact end with the water float turntable is driven by the water float turntable, increasing the flow velocity;

[0017] Step 4: According to Bernoulli's law in fluid mechanics, the greater the flow velocity, the lower the pressure. When the ground effect vehicle skims across the water surface, the rotation of the water-skimming turntable will increase the flow velocity of the water layer at the contact end below, thereby reducing the pressure. However, the water below the surface is stationary and generates a high pressure, which will produce a reaction force on the ground effect vehicle. When the reaction force is greater than the weight of the ground effect vehicle, the ground effect vehicle will bounce up.

[0018] Step 5: Repeat the process multiple times based on the principle of Step 4. The water-skimming turntable rotates continuously and contacts the water surface, causing the ground effect vehicle to jump on the water surface, thus achieving the boosting effect.

[0019] Preferably, in step three, the two water-skimming turntables on both sides rotate in opposite directions. The water-skimming turntables are driven to rotate by small gears through bearings. The small gears are distributed on both sides of the large gear, and the large gear is connected to the output end of the hydraulic motor. The hydraulic motor drives the small gear to rotate through the large gear.

[0020] The beneficial effects of this invention are as follows:

[0021] The invention has a reasonable structure. By adding a unique water-skimming lift-up component, a high-speed rotating water flow is artificially created under the boat, causing the water to generate an upward reaction force, which enables the ground effect vehicle to jump and lift off the water surface, thereby achieving the "water-skimming lift-up" function.

[0022] The present invention also has the following advantages:

[0023] (1) The present invention adapts to different navigation requirements and meets the installation requirements of the water-skimming booster components on the front planing surface by designing different upper and lower boat types on the front planing surface.

[0024] (2) The present invention designs two water-skimming turntables with opposite rotation directions in the water-skimming take-off component to counteract the reaction force generated between them, thereby avoiding the adverse effects of the unilateral lateral force generated by a single water-skimming turntable on the take-off of the ground effect vehicle. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 for Figure 1 Side view.

[0027] Figure 3 This is a schematic diagram of the hull structure of the present invention.

[0028] Figure 4 for Figure 3 A bottom view.

[0029] Figure 5 This is a schematic diagram of the structure of the device mounting assembly of the present invention.

[0030] Figure 6 for Figure 5 A cross-sectional view of the structure along line A.

[0031] Figure 7 for Figure 5 A structural sectional view along line B.

[0032] Figure 8 for Figure 5 A schematic diagram of the structure along the C-axis.

[0033] Figure 9 This is a schematic diagram of the structure of the water-floating lifting component of the present invention.

[0034] Figure 10 This is a schematic diagram of the structure of the water-floating turntable of the present invention.

[0035] The components include: 1. Horizontal stabilizer; 2. Propulsion system; 3. Ground effect wing; 4. Float; 5. Side wings; 6. Vertical stabilizer; 7. Hull; 8. Water-skimming support components.

[0036] 701. Forward upper planing surface; 702. Upper hull; 703. Forward lower planing surface; 704. Forward step; 705. Aft planing surface; 706. Aft step; 707. Equipment mounting assembly;

[0037] 70701, Structural peripheral plate; 70702, Upper sealing plate; 70703, Lower sealing plate opening; 70704, Upper sealing plate opening; 70705, Bearing mounting base; 70706, Lower sealing plate;

[0038] 801. Pinion; 802. Gear; 803. Hydraulic motor; 804. Bearing; 805. Water-floating turntable; 80501. Cylindrical disc; 80502. Spherical crown; 80503. Shaft key; 80504. Mounting shaft. Detailed Implementation

[0039] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0040] like Figures 1-10 As shown, the ground effect vehicle based on water-skimming in this embodiment includes a hull 7, with ground effect wings 3 fixedly installed on both sides of the hull 7. Each ground effect wing 3 is connected to one side of a floating boat 4 on its other end face. A side wing 5 is installed on the other side of the floating boat 4. A power system 2 is fixedly installed at the upper middle part of the hull 7, and a vertical tail 6 is fixedly installed at the upper rear part of the hull 7. The upper end face of the vertical tail 6 is fixedly connected to the middle part of the horizontal tail 1. A water-skimming assembly 8 is added to the bottom surface of the hull 7.

[0041] In this embodiment, the structure of the hull 7 includes a front upper planing surface 701, an upper hull 702, a front lower planing surface 703, a front step 704, a rear planing surface 705, a rear step 706, and a device mounting assembly 707. The front upper planing surface 701 is a tapered planing surface structure, and the front lower planing surface 703 is a smooth planing surface structure. The front upper planing surface 701 and the front lower planing surface 703 together form the front planing surface. A front step 704 is provided behind the front lower planing surface 703, and the rear planing surface 705 and the rear step 706 are sequentially provided along the length direction of the upper hull 702. A water-skimming lift-assist component 8 is installed between the forward gliding surface 703 and the forward step 704, and a device mounting component 707 is provided to match the water-skimming lift-assist component 8; the forward gliding surface structure plays different roles in different navigation states. When the ground effect vehicle enters the low-speed gliding state from the displacement state, the aerodynamic lift generated by the ground effect 3 is small due to the low navigation speed, and it is mainly supported by the hydrodynamic lift generated by the hull 7. To enhance the seakeeping capability of the hull 7, the upper forward planing surface 701 adopts a sharp, angled design with a large length-to-width ratio, a large lift angle, and a large bilge bend, giving it excellent wave-cutting ability. As the speed of the ground effect vehicle increases, the aerodynamic lift generated by the ground effect wing 3 becomes increasingly greater, lifting most of the upper forward planing surface 701 above the water, while the forward gliding surface 703 remains submerged. Simultaneously, due to the need to install the water-skimming booster assembly 8, the forward gliding surface 703 needs to be designed with a small lift angle, no bilge bend, and a nearly straight shape, with the forward section at the installation location... The front gliding surface 703 of step 704 is cut off. This facilitates the installation and fixation of the water-skimming booster 8, and prevents the water-skimming booster 8 from protruding from the outer surface of the front gliding surface 703 after installation. Furthermore, it will not increase the water resistance during the gliding process of the ground effect vehicle. The design of the front step 704 and the rear step 706 can cut off the high-speed water flow from the front of the hull 7 and create an air layer between the lower surface of the hull 7 and the water. This not only helps the hull 7 get rid of the water's suction force, but also prevents the water splashing off the step from rising up, reducing the gliding resistance of the hull 7.

[0042] In this embodiment, the structure of the device mounting assembly 707 includes a structural peripheral plate 70701, an upper sealing plate 70702, a lower sealing plate opening 70703, an upper sealing plate opening 70704, a bearing mounting seat 70705, and a lower sealing plate 70706. The structural peripheral plate 70701 is fixedly connected to the hull structure around the bottom of the ship. The structural peripheral plate 70701 and the lower sealing plate 70706 together form a watertight structure at the opening of the forward sliding surface 703. The watertight structure is used for... An opening is cut off at the front of the front step 704 on the sliding surface 703 before the closure; the upper sealing plate 70702 is fixedly connected to the top perimeter structure of the structural peripheral plate 70701, and the upper sealing plate 70702 and the lower sealing plate 70706 together form the gear compartment; a bearing mounting seat 70705 is provided above the lower sealing plate 70706; an upper sealing plate opening 70704 is provided on the upper sealing plate 70702, and a lower sealing plate opening 70703 is provided on the lower sealing plate 70706.

[0043] In this embodiment, the structure of the water-skimming assist component 8 is as follows: it includes a small gear 801, a large gear 802, a hydraulic motor 803, a bearing 804, and a water-skimming turntable 805; the hydraulic motor 803 drives the large gear 802, and small gears 801 are arranged on both sides of the large gear 802 for gear transmission; each small gear 801 is driven by a corresponding matching bearing 804 to rotate the water-skimming turntable 805; both the small gear 201 and the large gear 202 are spur gears, and the large gear 202 drives the two small gears 201 on both sides to rotate in opposite directions.

[0044] In this embodiment, for example, the hydraulic motor 803 can be a low-speed, high-torque hydraulic motor. Its advantages include the elimination of the need for a reduction gear for low-speed operation, unrestricted high-torque start-up without time or frequency limitations, strong shock resistance and environmental adaptability, easy installation, maintenance-free operation, high reliability, and excellent controllability. The maximum speed of the low-speed, high-torque hydraulic motor can reach 300-600 rpm, and the speed can be further increased significantly by the speed ratio of the large gear 802 driving the small gear 801.

[0045] The structure of the water-skimming turntable 805 includes a cylindrical disk 80501, a spherical crown 80502, a key 80503, and a mounting shaft 80504. The spherical crown 80502 is a curved structure that integrates the cylindrical disk 80501 and the spherical crown 80502 to form a turntable shape. The mounting shaft 80504 is fixed at the center of the cylindrical disk 80501. A key 80503 is provided on the mounting shaft 80504 and connects to the pinion 801 through the key 80503.

[0046] In this embodiment, the bearing 804 is used to support the mounting shaft 80504 above the water float turntable 805, reducing rotational friction resistance and making the rotation smoother.

[0047] The principle used in this embodiment is as follows:

[0048] Taking skipping a stone on water as an example, when a stone is skipped, it touches the water below it. Because the stone has a high speed along the horizontal surface, this water layer is also carried along by the stone with a high speed. This is based on Bernoulli's principle in fluid mechanics: the greater the flow velocity, the lower the pressure. When an object (with a density greater than water) skims across the water surface, it causes the water below it to move rapidly in a very short time, thus reducing the pressure. The water below is stationary, resulting in a high pressure. This exerts a force on the object. When the pressure is greater than the object's weight, the object bounces. This process repeats multiple times, resulting in the object skipping on the water's surface. When the pressure is less than the object's weight, it sinks. Furthermore, when the object rotates, it further drives the water flow, resulting in more skips. Also, the stone must have an angle of attack when it touches the horizontal surface, which increases the reaction force of the water on the stone, making it easier for the stone to skip.

[0049] The lift-up method for a ground effect vehicle based on water-skimming in this embodiment includes the following steps:

[0050] Step 1: During takeoff, lift your head up so that the forward sliding surface 703 of the hull 7 creates an angle of attack with the waterline;

[0051] Step 2: The water-skimming turntable 805 is perpendicular to the forward sliding surface 703, so that the spherical cap 80502 of the water-skimming turntable 805 also has the same angle of attack as the horizontal plane, which helps the ground effect vehicle take off.

[0052] Step 3: The two water-skimming turntables 805 on both sides rotate in opposite directions. The water layer at the contact end with the water-skimming turntable 805 is driven by the water-skimming turntable 805, and the flow velocity increases.

[0053] Step 4: According to Bernoulli's law in fluid mechanics, the greater the flow velocity, the lower the pressure. When the ground effect vehicle skims across the water surface, the rotation of the water-skimming turntable 805 will increase the flow velocity of the water layer at the contact end below, thereby reducing the pressure. However, the water below the surface is stationary and generates a high pressure, which will produce a reaction force on the ground effect vehicle. When the reaction force is greater than the weight of the ground effect vehicle, the ground effect vehicle will bounce up.

[0054] Step 5: Repeat the process multiple times based on the principle of Step 4. The water-skimming turntable 805 rotates continuously and contacts the water surface, causing the ground effect vehicle to jump on the water surface, thus achieving the lift-up effect.

[0055] In this embodiment, in step three, the two water-skimming turntables 805 rotate in opposite directions. The water-skimming turntables 805 are driven to rotate by the small gear 201 through the bearing 804. The small gear 201 is distributed on both sides of the large gear 202, and the large gear 202 is connected to the output end of the hydraulic motor 803. The hydraulic motor 803 drives the small gear 201 to rotate through the large gear 202.

[0056] This invention adds a water-skimming lift-up component 8, which is installed under the boat. During the takeoff of the ground effect vehicle, the water-skimming lift-up component 8 can generate a high-speed rotating water flow, which drives the flow speed of the water at the contact end, thereby generating an upward reaction force from the water, enabling the ground effect vehicle to jump and lift off on the water surface, thus achieving the effect of "water-skimming lift-up".

[0057] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A ground effect vehicle based on water-skimming propulsion, characterized in that: Includes a hull (7), with ground effect wings (3) fixedly installed on both sides of the hull (7), each ground effect wing (3) being connected to one side of a floating boat (4) on its other end face, and side wings (5) installed on the other side of the floating boat (4). The power system (2) is fixedly installed at the upper middle part of the hull (7), and the vertical tail (6) is fixedly installed at the upper rear part of the hull (7). The upper end face of the vertical tail (6) is fixedly connected to the middle part of the horizontal tail (1). A water-skimming aid component (8) is added to the bottom of the hull (7); The structure of the hull (7) includes a front upper planing surface (701), an upper hull (702), a front sliding surface (703), a front step (704), a rear planing surface (705), a rear step (706), and an equipment mounting assembly (707). The upper front sliding surface (701) is a tapered sliding surface structure, and the lower front sliding surface (703) is a smooth sliding surface structure. The upper front sliding surface (701) and the lower front sliding surface (703) together form the front sliding surface. A front step (704) is provided behind the front sliding surface (703), and a rear sliding surface (705) and a rear step (706) are provided sequentially along the length direction of the upper hull (702). A water-skimming aid assembly (8) is installed between the front sliding surface (703) and the front step (704), and a device mounting assembly (707) is provided to match the water-skimming aid assembly (8). The structure of the water-skimming assist component (8) is as follows: it consists of a small gear (801), a large gear (802), a hydraulic motor (803), a bearing (804), and a water-skimming turntable (805); The hydraulic motor (803) drives the large gear (802), and small gears (801) are arranged on both sides of the large gear (802) for gear transmission. Each small gear (801) drives the water-skimming turntable (805) to rotate via a corresponding matching bearing (804); The structure of the water-skimming turntable (805) includes a cylindrical disc (80501), a spherical crown (80502), a key (80503), and a mounting shaft (80504). The spherical cap (80502) has a curved surface structure, which integrates and fixes the cylindrical disk (80501) and the spherical cap (80502) to form a turntable shape; A mounting shaft (80504) is fixed at the center of the cylindrical disk (80501). A key (80503) is provided on the mounting shaft (80504) and it is connected to the pinion (801) through the key (80503).

2. The ground effect vehicle based on water-skimming as described in claim 1, characterized in that: The structure of the device mounting assembly (707) is as follows: it includes a structural peripheral plate (70701), an upper sealing plate (70702), a lower sealing plate opening (70703), an upper sealing plate opening (70704), a bearing mounting seat (70705), and a lower sealing plate (70706). The structural perimeter plate (70701) is fixedly connected to the hull structure around the bottom of the ship. The structural perimeter plate (70701) and the lower sealing plate (70706) together form a watertight structure at the opening of the front sliding surface (703). The watertight structure is used to close the opening on the front sliding surface (703) that is cut off at the front of the front step (704). The upper sealing plate (70702) is fixedly connected to the top four sides of the structural peripheral plate (70701), and the upper sealing plate (70702) and the lower sealing plate (70706) together constitute the gear compartment; A bearing mounting seat (70705) is provided above the lower sealing plate (70706); An upper sealing plate opening (70704) is provided on the upper sealing plate (70702), and a lower sealing plate opening (70703) is provided on the lower sealing plate (70706).

3. The ground effect vehicle based on water-skimming as described in claim 1, characterized in that: Both the pinion (801) and the gear (802) are spur gears. The gear (802) drives the two pinions (801) on both sides to rotate in opposite directions.

4. A method for assisting the lift of a ground effect vehicle based on water-skimming lift as described in any one of claims 1 to 3, characterized in that: Includes the following steps: Step 1: When taking off, lift your head and the front gliding surface (703) of the hull (7) will form an angle of attack with the waterline; Step 2: The water-skimming turntable (805) is perpendicular to the forward sliding surface (703), so that the spherical crown (80502) of the water-skimming turntable (805) also has the same angle of attack as the horizontal plane; Step 3: The two water float turntables (805) rotate in opposite directions, and the water layer at the contact end with the water float turntable (805) is driven by the water float turntable (805), increasing the flow velocity; Step 4: According to Bernoulli's law in fluid mechanics, the greater the flow velocity, the lower the pressure. When the ground effect vehicle skims across the water surface, the rotation of the water-skimming turntable (805) will increase the flow velocity of the water layer at the lower contact end, thereby reducing the pressure. However, the water below the surface is stationary and generates a high pressure, which will produce a reaction force on the ground effect vehicle. When the reaction force is greater than the weight of the ground effect vehicle, the ground effect vehicle will bounce up. Step 5: Repeat the process multiple times based on the principle of Step 4. The water-skimming turntable (805) rotates continuously and contacts the water surface, causing the ground effect vehicle to jump on the water surface, thus achieving the lifting effect.

5. The lift-up method for a ground effect vehicle based on water-skimming as described in claim 4, characterized in that: In step three, the two water-skimming turntables (805) rotate in opposite directions. The water-skimming turntables (805) are driven to rotate by the small gear (801) through the bearing (804). The small gear (801) is distributed on both sides of the large gear (802). The large gear (802) is connected to the output end of the hydraulic motor (803). The hydraulic motor (803) drives the small gear (801) to rotate through the large gear (802).

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