Wing body fusion navigation body of multi-modal wave-propelled unmanned aircraft

Abstract

The invention discloses a multi-mode wave-propelled unmanned aircraft wing-body fusion navigation body, and relates to the technical field of unmanned aircrafts, the multi-mode wave-propelled unmanned aircraft wing-body fusion navigation body comprises a navigation body main body, and the navigation body main body comprises an outer skin, an internal skeleton and a solid buoyancy material filled in the internal skeleton; the appearance of the navigation body main body adopts a wing body fusion design; the wing section of the navigation body main body adopts an NACA asymmetric wing section; the upper surface of the navigation body main body is designed into a curved surface with an integrated functional unit; a part of components of the dynamic buoyancy adjusting module are integrated in the head section of the navigation body main body; a watertight instrument cabin mounting space is integrated in the middle section of the navigation body main body; an emergency load rejection device mounting space is integrated below the tail section of the navigation body main body; and stabilizing wings are arranged below the tail end of the navigation body main body. The multi-modal wave-propelled unmanned aircraft wing body fusion navigation body has the advantages of high hydrodynamic efficiency, optimized wave energy capture performance, good structural integration and capability of supporting multi-modal navigation.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and in particular to a multi-modal wave-propelled unmanned aerial vehicle with wing-body fusion. Background Art

[0002] Wave-propelled unmanned vehicles (such as wave gliders) use wave energy to achieve long-term operations at sea and have broad application prospects in the field of ocean observation and monitoring.

[0003] However, traditional wave gliders typically utilize simple boat- or wing-shaped floats, leaving room for improvement in their hydrodynamic efficiency, wave energy capture capabilities, and adaptability to complex sea conditions. Furthermore, existing float designs often only support a single surface navigation mode, limiting their stealth, survivability, and mission flexibility. To improve wave energy utilization efficiency, reduce navigation resistance, and provide a foundational platform for multimodal motion on the surface, near the surface, and underwater, the core structure of the vehicle—the navigation body—needs to be optimized. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a multimodal wave-propelled unmanned aerial vehicle wing-body fusion navigation body with high hydrodynamic efficiency, optimized wave energy capture performance, good structural integration and the ability to support multimodal navigation.

[0005] The technical solution of the present invention is achieved as follows:

[0006] A multi-modal wave-propelled unmanned aerial vehicle with a wing-body fusion structure includes a main body, which includes an outer skin, an inner frame, and a solid buoyancy material filled therein; the inner frame provides overall structural strength, and the solid buoyancy material provides basic buoyancy for the vehicle, so that the vehicle has a slightly positive buoyancy in its initial configuration;

[0007] The main body of the vehicle adopts a wing-body fusion or a body of revolution plus wings design to reduce navigation resistance and improve the amplitude of wave motion response. It has good hydrodynamic performance and stability, and the pressure-resistant structure allows it to dive to a predetermined depth (for example, 200 meters). The wing section of the wing-body fusion design adopts a NACA asymmetric airfoil to generate lift under the vertical motion of waves, thereby achieving efficient navigation in waves and improving wave energy capture efficiency.

[0008] The upper surface of the vehicle body is designed as a curved surface with integrated functional units, which is provided with installation interfaces for deploying other systems;

[0009] The first section of the main body of the vehicle is integrated with some components of the dynamic buoyancy regulation module; the middle section of the main body of the vehicle is integrated with the installation space of the watertight instrument cabin; the bottom of the tail section of the main body of the vehicle is integrated with the installation space of the emergency jettisoning device; and a stabilizing wing is provided under the tail end of the main body of the vehicle to provide yaw restoring force to enable the vehicle to maintain heading stability.

[0010] As a preferred implementation of a multi-modal wave-propelled unmanned aerial vehicle wing-body fusion vehicle, the wing cross-section of the vehicle body specifically adopts a NACA4412 asymmetric airfoil.

[0011] As a preferred embodiment of a wing-body fusion vehicle for a multi-modal wave-propelled unmanned aerial vehicle, the ratio of the wingspan to the chord length of the vehicle body is 1:3.

[0012] As an optimal implementation of a multi-modal wave-propelled unmanned aerial vehicle wing-body fusion vehicle, the outer skin is made of lightweight and high-strength composite materials, the internal skeleton is made of high-strength metal materials, and the solid buoyancy material is made of inorganic non-metallic materials.

[0013] As an optimal implementation of a multi-modal wave-propelled unmanned aerial vehicle wing-body fusion vehicle, the outer skin is specifically made of glass fiber reinforced plastic (GFRP) or carbon fiber reinforced plastic (CFRP); the internal skeleton is specifically made of titanium alloy; and the solid buoyancy material is specifically made of glass microbeads.

[0014] As a preferred embodiment of a multi-modal wave-propelled unmanned aerial vehicle wing-body fusion vehicle, the surface of the vehicle body is coated with an anti-fouling and corrosion-resistant coating.

[0015] As a preferred embodiment of a multi-modal wave-propelled unmanned aerial vehicle wing-body fusion vehicle, the anti-fouling and corrosion-resistant coating is specifically an epoxy resin coating or a polyurethane coating.

[0016] As a preferred embodiment of a wing-body fusion vehicle of a multi-modal wave-propelled unmanned aerial vehicle, the upper surface of the vehicle body is covered with a flexible solar power generation unit in a curved fitting manner.

[0017] As a preferred embodiment of a multimodal wave-propelled unmanned aerial vehicle wing-body fusion vehicle, the upper surface of the vehicle body is provided with an installation interface for deploying a foldable multifunctional intelligent perception and communication system.

[0018] As a preferred embodiment of a multi-modal wave-propelled unmanned aerial vehicle wing-body fusion vehicle, part of the components of the first section of the vehicle body that integrates a dynamic buoyancy adjustment module is a ballast water tank.

[0019] After adopting the above technical solution, the beneficial effects of the present invention are:

[0020] 1. High hydrodynamic efficiency: The wing-body fusion design effectively reduces the shape drag of the navigation body and improves the hydrodynamic performance;

[0021] 2. Optimized wave energy capture: The NACA asymmetric airfoil can more effectively utilize the vertical motion of waves to generate the lift required to stay near the water surface, thereby improving the efficiency of wave energy conversion;

[0022] 3. Good structural integration: It provides optimized installation space and interfaces for key components such as the dynamic buoyancy adjustment module, intelligent sensing and communication system, solar power generation unit, watertight instrument compartment, and emergency jettisoning device, facilitating system integration;

[0023] 4. Support for multi-modal motion: Combining internal buoyancy materials and dynamic buoyancy adjustment modules, it provides a physical basis for the vehicle to achieve multiple motion modes such as surface, near-surface and underwater diving;

[0024] 5. Lightweight, high strength and durability: The use of composite skin and high-strength metal frame ensures structural strength and rigidity while reducing overall weight; the surface coating improves its durability in the marine environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a three-dimensional structural diagram of the wing-body fusion vehicle of the multi-modal wave propulsion unmanned vehicle in Example 1;

[0027] Figure 2 for Figure 1 A three-dimensional structural diagram of the main body of the mid-navigation vehicle;

[0028] Figure 3 for Figure 2 A bird's-eye view of the main structure of the mid-ship;

[0029] Figure 4 for Figure 2 Internal structure diagram of the main body of the mid-navigation vehicle;

[0030] Figure 5 This is a three-dimensional structural diagram of the wing-body fusion vehicle of the multi-modal wave propulsion unmanned vehicle in Example 2;

[0031] Figure 6 for Figure 5 A three-dimensional structural diagram of the main body of the mid-navigation vehicle;

[0032] Figure 7 for Figure 6 A bird's-eye view of the main structure of the mid-ship;

[0033] Markings in the figure: 1-navigation body; 2-dynamic buoyancy adjustment module; 3-multifunctional intelligent perception and communication system; 4-flexible solar power generation unit; 5-emergency jettisoning device; 6-hanging cable; 7-dual-mode propulsion system; 8-skin; 9-metal skeleton; 10-solid buoyancy material; 11-stabilizing wing; 12-ballast water tank; 13-watertight instrument compartment installation space; 14-emergency jettisoning device installation space. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the 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.

[0035] Example 1, as Figures 1 to 5 As shown, a multi-modal wave-propelled unmanned aerial vehicle wing-body fusion vehicle includes a vehicle body 1. When the vehicle body 1 is in use, the bottom of the vehicle body 1 is connected to the dual-mode propulsion system 7 through a hanging cable 6.

[0036] like Figures 1 to 4 As shown, the main body 1 of the vehicle is the core supporting platform of the entire unmanned vehicle. The main body 1 comprises an outer skin 8, an inner skeleton, and a solid buoyancy material 10 filled inside. The inner skeleton provides overall structural strength, and the solid buoyancy material 10 provides basic buoyancy for the vehicle, giving it a slightly positive buoyancy in its initial configuration.

[0037] like Figure 2 As shown, the shape of the vehicle body 1 adopts a wing-body fusion design, which makes the wing and the main body transition smoothly, effectively reducing the shape resistance and interference resistance when sailing on the water surface or near the water surface. At the same time, this design is also conducive to improving the response amplitude of the vehicle to wave motion.

[0038] like Figure 3 As shown, the cross-sectional shape of the wing of the main body 1 of the vehicle is crucial for capturing wave energy. The wing cross-section of the main body 1 of the vehicle adopts a NACA4412 asymmetric airfoil. When waves cause the main body 1 to heave, the asymmetric airfoil generates a large lift force under the action of the relative flow of water, thereby keeping the micro-positive buoyancy vehicle near the water surface. The NACA4412 airfoil has good low-speed lift characteristics and is suitable for extracting energy from wave motion.

[0039] like Figure 3 As shown, the ratio of the wingspan to the chord length (aspect ratio) of the main body 1 of the navigation body can affect the lift-to-drag ratio and structural characteristics. The ratio is set to 1:3 to ensure sufficient structural strength to withstand wave loads while obtaining better hydrodynamic efficiency.

[0040] like Figure 4 As shown, the structural design of the main body 1 of the vehicle takes into account the requirements of lightweight, high strength and functional integration. The outer skin 8 is made of lightweight and high-strength glass fiber reinforced plastic (GFRP) or more advanced carbon fiber reinforced plastic (CFRP). These materials have excellent seawater corrosion resistance and high specific strength and specific stiffness. The internal skeleton is a high-strength titanium alloy skeleton. This skeleton is not only the main load-bearing structure, bearing the load from waves, connectors and internal equipment, but also provides a solid installation base and interface for components such as the dynamic buoyancy adjustment module 2, the multifunctional intelligent sensing and communication system 3, the emergency jettisoning device 5, and the hanging cable 6. The space between the skeleton and the skin 8 is filled with solid buoyancy material 10, which is glass microbeads. These materials provide basic buoyancy, so that the vehicle has a slightly positive buoyancy when unloaded or in standard configuration, ensuring that it can naturally float on the water surface or near the water surface when it loses power or adjustment ability.

[0041] like Figures 2 to 4 As shown, to achieve energy replenishment and environmental awareness, the upper surface of the vehicle body 1 is designed to be curved, suitable for laying flexible solar power generation units 4. Flexible thin-film solar cells can fit the curved surface of the vehicle well, maximizing the area receiving light. The upper surface also has a reserved mounting interface for deploying the mast or support structure of the foldable multifunctional intelligent sensing and communication system 3. This integrated design allows for a compact and rational layout of the functional modules.

[0042] like Figure 4 As shown, the bow section of the main body 1 is designed to accommodate key components of the dynamic buoyancy adjustment module 2, particularly the ballast tank 12. This layout facilitates adjusting the trim and overall buoyancy of the craft by changing the amount of water in the bow, thereby controlling its diving, surfacing, and attitude.

[0043] like Figure 4 As shown, a watertight instrument compartment installation space is provided inside the middle section of the navigation body 1 for installation of integrated instruments and equipment.

[0044] like Figure 4 As shown, the lower part of the rear section of the main body 1 of the vehicle is designed to provide an installation space for the emergency jettisoning device 5, so that the vehicle can surface on the surface in an emergency, thus ensuring the recovery safety of the vehicle.

[0045] A stabilizing wing 11 is provided below the tail end of the vehicle body 1 to provide yaw restoring force so that the vehicle maintains heading stability.

[0046] In order to adapt to long-term work in the marine environment, the outer surface of the navigation body 1 is coated with a high-performance anti-fouling and corrosion-resistant coating. The anti-fouling and corrosion-resistant coating is an epoxy resin or polyurethane-based coating to prevent marine organisms from attaching and material corrosion, thereby extending the service life of the navigation body.

[0047] The specific size of the vehicle body 1 can be customized according to the mission requirements. Normally, the vehicle length can be designed to be 3.5 meters and the maximum wingspan is 2 meters.

[0048] To sum up, the wing-body fusion vehicle body 1 designed in the present invention not only improves the wave energy utilization efficiency and hydrodynamic performance through optimized shape, airfoil selection, structural materials and layout, but also provides a platform for the integration of multi-functional modules, and supports the ability of the vehicle to achieve multi-modal motion on the water surface, near the water surface and underwater. It is a key component for realizing high-performance multi-modal wave-propelled unmanned vehicle.

[0049] Example 2, as Figures 5 to 7 As shown, the only difference between this embodiment and embodiment 1 is that the outer shape of the navigation body 1 is replaced by a rotating body plus wing design, which has good hydrodynamic performance and stability, and its pressure-resistant structure allows it to dive to a predetermined depth (for example, 200 meters).

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-modal wave-propelled unmanned aerial vehicle with a wing-body fusion structure, comprising a main body of the vehicle, wherein the main body of the vehicle comprises an outer skin, an internal skeleton, and a solid buoyancy material filled therein; Its characteristics are: The shape of the main body of the vehicle adopts a wing-body fusion or a rotating body plus wing design; wherein the wing section of the wing-body fusion shape adopts a NACA asymmetric airfoil; The upper surface of the vehicle body is designed as a curved surface with integrated functional units, and the curved surface is provided with installation interfaces for deploying other systems; Partial components of the dynamic buoyancy adjustment module are integrated inside the front section of the navigation body; a watertight instrument cabin installation space is integrated inside the middle section of the navigation body; an emergency jettisoning device installation space is integrated below the tail section of the navigation body; and a stabilizing wing is provided below the tail end of the navigation body.

2. The multi-modal wave-propelled unmanned aerial vehicle with wing-body fusion according to claim 1 is characterized by: The wing section of the main body of the navigation body specifically adopts a NACA4412 asymmetric airfoil.

3. The multi-modal wave-propelled unmanned aerial vehicle with wing-body fusion according to claim 1 is characterized by: The ratio of the wingspan to the chord length of the main body of the vehicle is 1:

3.

4. The multi-modal wave-propelled unmanned aerial vehicle with wing-body fusion according to claim 1, characterized in that: The outer skin is made of a light and high-strength composite material, the internal skeleton is made of a high-strength metal material, and the solid buoyancy material is made of an inorganic non-metallic material.

5. The multi-modal wave-propelled unmanned aerial vehicle with wing-body fusion according to claim 4 is characterized in that: The outer skin is specifically made of glass fiber reinforced plastic or carbon fiber reinforced plastic; the internal skeleton is specifically made of titanium alloy; and the solid buoyancy material is specifically made of glass microbeads.

6. The multi-modal wave-propelled unmanned aerial vehicle with wing-body fusion according to claim 1, characterized in that: The surface of the vehicle body is coated with an anti-fouling and corrosion-resistant coating.

7. The multi-modal wave-propelled unmanned aerial vehicle with wing-body fusion according to claim 6 is characterized by: The antifouling and corrosion-resistant coating is specifically an epoxy resin coating or a polyurethane coating.

8. The multi-modal wave-propelled unmanned aerial vehicle with wing-body fusion according to claim 1, characterized in that: The upper surface of the navigation body is covered with a flexible solar power generation unit in a curved surface fitting manner.

9. The multi-modal wave-propelled unmanned aerial vehicle with wing-body fusion according to claim 8, characterized in that: The upper surface of the navigation body is provided with an installation interface for deploying a foldable multifunctional intelligent perception and communication system.

10. The multi-modal wave-propelled unmanned aerial vehicle with wing-body fusion according to claim 1, characterized in that: The first section of the main body of the navigation body is internally integrated with a dynamic buoyancy adjustment module, which is a ballast water tank.

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