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

Abstract

The utility model discloses a multi-mode wave-propelled unmanned aircraft wing-body fusion navigation body, which relates to the technical field of unmanned aircrafts, and 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] This utility model relates to the field of unmanned aerial vehicle technology, specifically to a multimodal wave-propelled unmanned aerial vehicle with blended wing-body design. Background Technology

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

[0003] However, traditional wave gliders typically employ simple hull or airfoil-shaped floats, and their hydrodynamic efficiency, wave energy capture capabilities, and adaptability to complex sea conditions still have room for improvement. 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 drag, and provide a foundational platform for multimodal maneuvers including surface, near-surface, and underwater operations, it is necessary to optimize the design of the vehicle's core structure—the hull. Utility Model Content

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

[0005] The technical solution of this utility model is implemented as follows:

[0006] A multimodal wave-propelled unmanned aerial vehicle (UAV) with blended wing-body structure includes a main body comprising an outer skin, an internal skeleton, and solid buoyancy material filling the interior. The internal skeleton provides overall structural strength, while the solid buoyancy material provides basic buoyancy for the UAV, giving it a slight positive buoyancy in its initial configuration.

[0007] The main body of the aircraft adopts a blended wing-body or gyro-body plus wing design, which aims to reduce navigation drag and improve wave motion response amplitude. It has good hydrodynamic performance and stability, and the pressure-resistant structure allows it to dive to a predetermined depth (e.g., 200 meters). The wing section of the blended wing-body shape adopts NACA asymmetric airfoil to generate lift under the vertical motion of waves, thereby navigating efficiently in waves and improving wave energy capture efficiency.

[0008] The upper surface of the main body of the aircraft is designed as a curved surface with integrated functional units, and the curved surface is provided with mounting interfaces for deploying other systems;

[0009] The proximal section of the main body of the vehicle integrates some components of the dynamic buoyancy adjustment module; the middle section of the main body of the vehicle integrates the installation space for the watertight instrument compartment; the lower part of the tail section of the main body of the vehicle integrates the installation space for the emergency jettison device; and a stabilizing wing is provided under the tail end of the main body of the vehicle to provide yaw recovery force and enable the vehicle to maintain directional stability.

[0010] As a preferred implementation of a multimodal wave-propelled unmanned aerial vehicle with blended wing-body design, the wing section of the main body of the vehicle specifically adopts the NACA4412 asymmetric airfoil.

[0011] As a preferred embodiment of a multimodal wave-propelled unmanned aerial vehicle with blended wing-body design, the ratio of the wingspan to the chord length of the main body of the vehicle is 1:3.

[0012] As a preferred embodiment of a multimodal wave-propelled unmanned aerial vehicle with a blended wing-body structure, the outer skin is made of lightweight and high-strength composite material, the internal skeleton is made of high-strength metal material, and the solid buoyancy material is made of inorganic non-metallic material.

[0013] As a preferred embodiment of a multimodal wave-propelled unmanned aerial vehicle with a blended wing-body structure, 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 microspheres.

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

[0015] As a preferred embodiment of a multimodal wave-propelled unmanned aerial vehicle with a blended wing-body structure, the antifouling and corrosion-resistant coating is specifically an epoxy resin coating or a polyurethane coating.

[0016] As a preferred embodiment of a multimodal wave-propelled unmanned aerial vehicle with a blended wing-body structure, the upper surface of the main body of the vehicle is covered with flexible solar power generation units in a curved bonding manner.

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

[0018] As a preferred implementation of a multimodal wave-propelled unmanned aerial vehicle with a blended wing-body configuration, the components of the front section of the main body of the vehicle, which integrate a dynamic buoyancy adjustment module, are ballast water tanks.

[0019] After adopting the above technical solution, the beneficial effects of this utility model are:

[0020] 1. High hydrodynamic efficiency: The blended wing-body design effectively reduces the drag of the airframe and improves 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, thus improving wave energy conversion efficiency.

[0022] 3. Excellent structural integration: It provides optimized installation space and interfaces for key components such as dynamic buoyancy adjustment modules, intelligent sensing and communication systems, solar power generation units, watertight instrument compartments, and emergency jettisoning devices, facilitating system integration;

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

[0024] 5. Lightweight, high strength and durability: The use of composite material skin and high-strength metal frame ensures structural strength and rigidity while reducing overall weight; the surface coating improves its durability in marine environments. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A three-dimensional structural diagram of the blended wing-body structure of the multimodal wave-propelled unmanned aerial vehicle in Embodiment 1;

[0027] Figure 2 for Figure 1 A three-dimensional structural diagram of the main body of the AVIC aircraft carrier;

[0028] Figure 3 for Figure 2 Top view of the main body of the Chinese aircraft carrier;

[0029] Figure 4 for Figure 2 Internal structure diagram of the main body of the China Aircraft Corporation;

[0030] Figure 5 A three-dimensional structural diagram of the blended wing-body structure of the multimodal wave-propelled unmanned aerial vehicle in Embodiment 2;

[0031] Figure 6 for Figure 5A three-dimensional structural diagram of the main body of the AVIC aircraft carrier;

[0032] Figure 7 for Figure 6 Top view of the main body of the Chinese aircraft carrier;

[0033] The diagram shows the following markings: 1-Main body of the aircraft; 2-Dynamic buoyancy adjustment module; 3-Multifunctional intelligent sensing 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 frame; 10-Solid buoyancy material; 11-Stabilizing wing; 12-Ballast water tank; 13-Watertight instrument compartment installation space; 14-Emergency jettisoning device installation space. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Example 1, as Figures 1 to 5 As shown, a multimodal wave-propelled unmanned aerial vehicle (UAV) with blended wing-body structure includes a main body 1. When in use, the bottom of the main body 1 is connected to a dual-mode propulsion system 7 via a cable 6.

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

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

[0038] like Figure 3As shown, the wing cross-sectional shape of the main body 1 is crucial for capturing wave energy. Specifically, the wing cross-section of the main body 1 adopts the NACA4412 asymmetric airfoil. When waves cause the main body 1 to undergo heave motion, the asymmetric airfoil generates significant lift under the relative flow of water, thus keeping the micro-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 aircraft 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 achieving 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 higher-grade carbon fiber reinforced plastic (CFRP). These materials have excellent resistance to seawater corrosion 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 loads from waves, connectors, and internal equipment, but also provides a robust mounting base and interface for components such as the dynamic buoyancy adjustment module 2, the multi-functional intelligent sensing and communication system 3, the emergency jettisoning device 5, and the lanyard 6. The space between the skeleton and the skin 8 is filled with solid buoyancy material 10, which is glass microspheres. These materials provide basic buoyancy, so that the vehicle has a slight positive buoyancy in no-load or standard configuration, ensuring that it can float naturally on or near the water surface when it loses power or adjustment capabilities.

[0041] like Figures 2 to 4 As shown, to achieve energy replenishment and environmental sensing, the upper surface of the main body 1 of the vessel is designed as a curved surface suitable for laying flexible solar power generation units 4. Flexible thin-film solar cells can fit well into the curved surface of the vessel, maximizing the light receiving area; at the same time, the upper surface also has reserved installation interfaces for deploying the mast or support structure of the foldable multi-functional intelligent sensing and communication system 3. This integrated design makes the layout of each functional module compact and reasonable.

[0042] like Figure 4 As shown, the bow section of the main body 1 is designed to house key components of the dynamic buoyancy adjustment module 2, particularly the ballast tank 12. This layout allows for adjustment of the vehicle's pitch and overall buoyancy by changing the amount of water in the bow, thereby controlling its diving, surfacing, and attitude.

[0043] like Figure 4As shown, the middle section of the main body 1 of the aircraft carrier has a watertight instrument compartment for installation, which is used for the installation of integrated instruments and equipment.

[0044] like Figure 4 As shown, the rear section of the main body 1 of the vehicle is designed with an installation space for the emergency jettison device 5, which enables the vehicle to surface in an emergency in case of an accident, ensuring the safety of the vehicle's recovery.

[0045] A stabilizing wing 11 is installed below the tail end of the main body 1 of the vehicle to provide yaw recovery force and enable the vehicle to maintain directional stability.

[0046] To adapt to long-term operation in the marine environment, the outer surface of the main body 1 of the vehicle is coated with a high-performance antifouling and corrosion-resistant coating. This antifouling and corrosion-resistant coating is an epoxy resin or polyurethane-based coating to prevent marine organisms from attaching and materials from corroding, thereby extending the service life of the vehicle.

[0047] The specific dimensions of the main body 1 of the aircraft can be customized according to mission requirements. Typically, the length of the aircraft can be designed to be 3.5 meters and the maximum wingspan is 2 meters.

[0048] In summary, the main body 1 of the wing-body blended vehicle designed in this utility model, through optimized shape, airfoil selection, structural materials and layout, not only improves wave energy utilization efficiency and hydrodynamic performance, but also provides a platform for the integration of multi-functional modules and supports the vehicle's ability to achieve multi-modal motion on the water surface, near the water surface and underwater. It is a key component for realizing a high-performance multi-modal wave propulsion unmanned vehicle.

[0049] Example 2, as Figures 5 to 7 As shown, the only difference between this embodiment and Embodiment 1 is that the shape of the main body 1 of the vehicle is replaced with a rotating body with wings, which has good hydrodynamic performance and stability, and its pressure-resistant structure allows it to dive to a predetermined depth (e.g., 200 meters).

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A multimodal wave-propelled unmanned aerial vehicle (UAV) with blended wing-body structure, comprising a main body, the main body including an outer skin, an internal skeleton, and internally filled solid buoyancy material; Its features are: The main body of the aircraft adopts a blended wing-body or gyroplane plus wing design; the wing section of the blended wing-body shape adopts the NACA asymmetric airfoil. The upper surface of the main body of the aircraft is designed as a curved surface with integrated functional units, and the curved surface is provided with installation interfaces for deploying other systems; The first section of the main body of the vehicle integrates some components of the dynamic buoyancy adjustment module; the middle section of the main body of the vehicle integrates the watertight instrument compartment installation space; the lower part of the tail section of the main body of the vehicle integrates the emergency jettison device installation space; and the lower part of the tail end of the main body of the vehicle is provided with a stabilizing wing.

2. The multimodal wave-propelled unmanned aerial vehicle with blended wing-body design according to claim 1, characterized in that: The wing section of the main body of the aircraft specifically adopts the NACA4412 asymmetric airfoil.

3. The multimodal wave-propelled unmanned aerial vehicle with blended wing-body design according to claim 1, characterized in that: The ratio of the wingspan to the chord length of the main body of the aircraft is 1:

3.

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

5. The multimodal wave-propelled unmanned aerial vehicle with blended wing-body design according to claim 4, 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 microspheres.

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

7. The multimodal wave-propelled unmanned aerial vehicle with blended wing-body design according to claim 6, characterized in that: The antifouling and corrosion-resistant coating is specifically an epoxy resin coating or a polyurethane coating.

8. The multimodal wave-propelled unmanned aerial vehicle with blended wing-body design according to claim 1, characterized in that: The upper surface of the main body of the aircraft is covered with flexible solar power generation units in a curved bonding manner.

9. The multimodal wave-propelled unmanned aerial vehicle with blended wing-body design according to claim 8, characterized in that: The upper surface of the main body of the aircraft is provided with an installation interface for deploying a foldable, multi-functional intelligent sensing and communication system.

10. The multimodal wave-propelled unmanned aerial vehicle with blended wing-body design according to claim 1, characterized in that: The first section of the main body of the vessel integrates a dynamic buoyancy adjustment module, and some components are ballast water tanks.

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