Synthetic jet을 이용한 스마트 무인기 익형 주위의 유동 제어 = Flow control of smart UAV airfoil using synthetic jet

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김민희; 김상훈; 김우례; 김종암; 김유신
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한국전산유체공학회 = Korean Society of Computational Fluids Engineering
한국전산유체공학회 2009년도 춘계학술대회논문집, pp. 43-50
스마트 무인기유동 제어Flow ControlSmart UAVSynthetic 제트Synthetic Jet
In order to reduce the download around Smart UAV(SUAV) at hovering and transition mode, flow control using synthetic jet has been performed. Many of the complex tift rotor flow features are captured including wing leading and trailing edge separation, and the large region of separated flow beneath the wing. First, in order to control the trailing edge separation, synthetic jet is located at 30, 95% of flap chord length. The flow control using synthetic jet on flap shows that staff characteristics depending on several mode can be improved through separation vortices resizing. Also, a flap jet and a 0.01c jet which control the separation efficiently are applied at the same time at each test case because controlling the leading edge separation is essential for download reduction. As a result, time averaged download is reduced about 18% comparing with no control case at hovering mode and 48% at transition mode. These research results show that if flow control using leading edge jet and trailing edge jet is used effectively to the SUAV in overall flight mode, flight performance and stability can be improved.
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Mechanical Aerospace Engineering (기계항공공학부)Others_기계항공공학부
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