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Amphibious unmanned aerial vehicle

An unmanned aerial vehicle, water-air technology, applied in the field of unmanned aerial vehicles, to achieve the effects of reducing operating noise and detectability, improving propulsion efficiency, and long battery life

Active Publication Date: 2017-04-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent only realizes the simple bending of the trailing edge, which ensures the smoothness and continuity of the airfoil. However, it still cannot meet the requirements that the aircraft have optimal aerodynamic performance under the entire flight envelope at low and high speeds.

Method used

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  • Amphibious unmanned aerial vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 , figure 2 , image 3 Shown are respectively the top view, oblique view, and front view of the water-air amphibious unmanned aerial vehicle. The water-air amphibious unmanned aerial vehicle includes: a fuselage and a wing 1, and the fuselage includes: an oil storage device, a power device, an auxiliary device, and a load device.

[0042] The wing 1 improves the maneuverability and maneuverability of the UAV through intelligent active deformation technology, which includes: active bending deformation in the span direction of the wing, active torsional deformation, active continuous variable trailing edge and bistable state Airfoil (low speed / supercritical airfoil). The continuous deformation of the wing is driven by an aerodynamic muscle driver, which has the advantages of light weight, high output force, low cost, etc., and can greatly reduce flight resistance and radar emission signals, thereby improving aerodynamic performance and stealth performa...

Embodiment 2

[0054] In order to change the structure with minimal driving force, the skin structure or material needs to have low deformation stiffness in the deformation direction and high structural stiffness in other non-deformation directions to withstand the corresponding aerodynamic and inertial loads. The invention adopts positive Poisson's ratio honeycomb, negative Poisson's ratio honeycomb or mixed honeycomb design with specific Poisson's ratio, so that the skin has specific rigidity.

[0055] Due to the aerodynamic shape requirements of the aircraft skin, the honeycomb structure cannot be used directly as an aircraft skin, and a smooth flexible panel is required to seal and provide contours. In the present invention, the elastomer material (such as polyurethane flexible matrix) is directly poured into the honeycomb structure, so that the elastomer and the honeycomb wall are fully bonded together to form a whole, avoiding local deformation of the surface, and effectively increasing...

Embodiment 3

[0057] The position where turbulent flow is likely to occur, such as the wing root of the fuselage, adopts an adjustable bionic shark skin structure, so as to exert its drag reduction effect to the greatest extent. The adjustable bionic sharkskin structure is based on the design of the adjustable groove structure of the electroactive polymer, specifically spraying a silver nanowire coating on one side of the electroactive dielectric elastomer according to a certain rule, and coating a flexible electrode on the other side . When an external voltage is applied, the silver nanowires and flexible electrodes on both sides gain energy to move toward each other, squeezing the elastomer causing it to deform. Since the silver nanowires are arranged according to certain rules on the surface of the dielectric body, a regular groove structure is formed on the surface of the elastomer. The size of the groove structure can be adjusted by adjusting the voltage, so as to meet the drag reducti...

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Abstract

The invention discloses an amphibious unmanned aerial vehicle which comprises a vehicle body and wings. Polygonal drivers are arranged in wing ribs of the wings. Each polygonal driver comprises a polygonal connecting rod mechanism and at least one pneumatic muscle driver. Connecting rods of the polygonal connecting rod mechanisms are connected with the wing ribs. The pneumatic muscle drivers are arranged in polygonal spaces formed by the polygonal connecting rod mechanisms, and the two ends of each pneumatic muscle driver are connected with the connecting rods of the corresponding polygonal connecting rod mechanism. The connecting rod mechanisms are used for connecting and fixing the pneumatic muscle drivers, the pneumatic muscle drivers are inflated and shrink in different directions, so that the connecting rod mechanisms output force in different directions, conversion of a concave wing profile and a convex wing profile is achieved, and the vehicle can meet the requirements for different flight speeds. The wings can intelligently and actively deform to meet the requirements for different navigation speeds, the amphibious unmanned aerial vehicle has the beneficial effects of being amphibious, quick to respond, long in time of endurance, capable of achieving formation flight and the like, and the vehicle can finish the tasks of naval vessel formation convoying, diver resistance, miniature submarine resistance and the like.

Description

technical field [0001] The invention relates to the field of unmanned aerial vehicles, in particular to a water-air amphibious unmanned aerial vehicle. Background technique [0002] Sea power is an important criterion for measuring the strength of a country's military power. As a member of the navy, submarines have the advantages of strong concealment and long standby time. Combined with submarine-launched ballistic missiles, they can form a powerful deterrent to the enemy. It is necessary to ensure national security, develop anti-submarine equipment, and establish a sound modern anti-submarine system. Anti-submarine helicopters and various types of combat ships are the most widely used anti-submarine force at present. The lack of capability has become a major obstacle to the formation of the combat effectiveness of my country's aircraft carrier formation. In addition, the harassment from combat weapons such as Vietnamese frogmen and miniature submarines is also worthy of su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C1/00B64C1/12B64C1/34B64C3/10B64C3/38B64C3/44B64C3/58B64C15/02B64D37/04B63G8/00B63G8/08B63G8/24
CPCB63G8/001B63G8/08B63G8/24B64C1/0009B64C1/12B64C1/34B64C3/10B64C3/38B64C3/44B64C3/58B64C15/02B64D37/04B63G2008/002B64U20/10B64C3/52Y02T50/10
Inventor 刘彦菊管清华孙健曹鹏宇杜林喆冷劲松
Owner HARBIN INST OF TECH
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