Low-Reynolds-number wing section matched with full-wing solar unmanned aerial vehicle

A solar unmanned aerial vehicle, low Reynolds number technology, applied in the direction of wing shape, heat reduction structure, etc., can solve the problems of airfoils that cannot be used in engineering
CN103482054BActive Publication Date: 2015-07-01NORTHWESTERN POLYTECHNICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHWESTERN POLYTECHNICAL UNIV
Publication Date
2015-07-01

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Abstract

The invention provides a low-Reynolds-number wing section matched with a full-wing solar unmanned aerial vehicle. The low-Reynolds-number wing section is characterized in that the relative thickness of the wing section is 11%-13%, the maximum camber of the wind section is 2%-4%, and a chordwise position with the maximum camber is 25%-30%; the wing section has a single bent outline in a 70% chordwise range from a front edge. With a full-aircraft matching design, the checking of pneumatic characteristics of a pair of wing sections is finished by checking the corresponding pneumatic characteristics of the wing sections and applying the two wing sections to the full-wing solar unmanned aerial vehicle, and the low-Reynolds-number wing section shows good pneumatic characteristics and engineering enforceability and can meet application demands on low Reynolds number, high lift force and lift-to-drag ratio and large relative thickness of the full-wing solar unmanned aerial vehicle.
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Description

technical field

[0001] The invention relates to the field of airfoil design in the aerodynamic shape design of an aircraft, in particular to a low Reynolds number airfoil matching a full-wing solar unmanned aerial vehicle. Background technique

[0002] Compared with conventional aerodynamic aircraft, solar unmanned aerial vehicle has particularity in aerodynamic design and analysis. This type of aircraft has a low flying speed and a low flying Reynolds number. Its cruise Reynolds number is about 200,000-400,000. It mainly involves low Reynolds number, low-speed laminar flow, laminar bubbles, laminar flow separation and laminar turbulence. The physical phenomena such as the transition of the flow are very different from the flow under the medium and high Reynolds number flight conditions of conventional power. Therefore, it is determined that the aerodynamic design method and idea of ​​solar UAV are obviously different from those of medium and high Reynolds number aircraft. ...

Claims

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