For micro air vehicles development, it is necessary to investigate the aerodynamic characteristics at low Reynolds numbers. Hofsass Espada airfoil has been developed, and its aerodynamic characteristics at low Reynolds numbers have been studied. This study uses wind tunnel experiments to understand the flow field around the Hofsass Espada airfoil near the stall with a laminar separation bubble. In this study, simultaneous flow visualization and time-resolved surface pressure measurements were conducted. Based on the chord length, the Reynolds number is 6.5 × 104. At the angle of attack near stall, flow around Hofsass Espada airfoil switches between the formation of a laminar separation bubble and a large separated region over the airfoil after the bubble burst. This behavior is similar to that of a relatively thick airfoil, such as the NACA0012. Owing to the smaller leading-edge radius than the NACA0012 airfoil, quasi-periodic switching behavior of flow does not exist.


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    Titel :

    Experimental Studies on Behavior of Laminar Separation Bubble Formed on the Hofsass Espada Airfoil Near Stall


    Weitere Titelangaben:

    Lect. Notes Electrical Eng.


    Beteiligte:
    Lee, Sangchul (Herausgeber:in) / Han, Cheolheui (Herausgeber:in) / Choi, Jeong-Yeol (Herausgeber:in) / Kim, Seungkeun (Herausgeber:in) / Kim, Jeong Ho (Herausgeber:in) / Kawakami, Masashi (Autor:in) / Rinoie, Kenichi (Autor:in)

    Kongress:

    Asia-Pacific International Symposium on Aerospace Technology ; 2021 ; Korea (Republic of) November 15, 2021 - November 17, 2021



    Erscheinungsdatum :

    2022-08-31


    Format / Umfang :

    11 pages





    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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