Effects of smart flap on aerodynamic performance of sinusoidal leading-edge wings at low Reynolds numbers
Sinusoidal leading-edge wings have shown a high performance after the stall region. In this study, the role of smart flaps in the aerodynamics of smooth and sinusoidal leading-edge wings at low Reynolds numbers of 29,000, 40,000 and 58,000 is investigated. Four wings with NACA 634-021 profile are fi...
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| Veröffentlicht in: | Proceedings of the Institution of Mechanical Engineers. Part G, Journal of aerospace engineering Journal of aerospace engineering, 2021-03, Vol.235 (4), p.439-450 |
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| container_title | Proceedings of the Institution of Mechanical Engineers. Part G, Journal of aerospace engineering |
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| creator | Mehraban, AA Djavareshkian, MH Sayegh, Y Forouzi Feshalami, B Azargoon, Y Zaree, AH Hassanalian, M |
| description | Sinusoidal leading-edge wings have shown a high performance after the stall region. In this study, the role of smart flaps in the aerodynamics of smooth and sinusoidal leading-edge wings at low Reynolds numbers of 29,000, 40,000 and 58,000 is investigated. Four wings with NACA 634-021 profile are firstly designed and then manufactured by a 3 D printer. Beam bending equation is used to determine the smart flap chord deflection. Next, wind tunnel tests are carried out to measure the lift and drag forces of proposed wings for a wide range of angles of attack, from zero to 36 degrees. Results show that using trailing-edge smart flap in sinusoidal leading-edge wing delays the stall point compared to the same wing without flap. However, a combination of smooth leading-edge wing and smart flap advances the stall. Furthermore, it is found that wings with smart flap generally have a higher lift to drag ratio due to their excellent performance in producing lift. |
| doi_str_mv | 10.1177/0954410020946903 |
| format | Article |
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In this study, the role of smart flaps in the aerodynamics of smooth and sinusoidal leading-edge wings at low Reynolds numbers of 29,000, 40,000 and 58,000 is investigated. Four wings with NACA 634-021 profile are firstly designed and then manufactured by a 3 D printer. Beam bending equation is used to determine the smart flap chord deflection. Next, wind tunnel tests are carried out to measure the lift and drag forces of proposed wings for a wide range of angles of attack, from zero to 36 degrees. Results show that using trailing-edge smart flap in sinusoidal leading-edge wing delays the stall point compared to the same wing without flap. However, a combination of smooth leading-edge wing and smart flap advances the stall. 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Furthermore, it is found that wings with smart flap generally have a higher lift to drag ratio due to their excellent performance in producing lift.</description><subject>Aerodynamics</subject><subject>Angle of attack</subject><subject>Drag</subject><subject>Fluid flow</subject><subject>Leading edges</subject><subject>Lift</subject><subject>Low Reynolds number</subject><subject>Stalling</subject><subject>Three dimensional printing</subject><subject>Wind tunnel testing</subject><subject>Wind tunnels</subject><issn>0954-4100</issn><issn>2041-3025</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp1UN1LwzAQD6LgnL77GPC5evlosj7KmE4YCKLPJU0vo6NNatIy9t_bOUEQvJc7-H3c3Y-QWwb3jGn9AEUuJQPgUEhVgDgjMw6SZQJ4fk5mRzg74pfkKqUdTJUrMSPNyjm0Q6LB0dSZOFDXmp4GTw3GUB-86RpLe4wuxM54i9_Exo8pNLVpaYumbvw2w3qLdD9NiZqBtmFP3_DgQ1sn6seuwpiuyYUzbcKbnz4nH0-r9-U627w-vywfN5kVkA9Z5ZjKma3rhRTK8oozrrS0EiywxXQ_LrRlinOhhbPCaeaU0VUl0GhnALWYk7uTbx_D54hpKHdhjH5aWfIcpAau8mJiwYllY0gpoiv72Ez_H0oG5THQ8m-gkyQ7SZLZ4q_pv_wviC11YA</recordid><startdate>20210301</startdate><enddate>20210301</enddate><creator>Mehraban, AA</creator><creator>Djavareshkian, MH</creator><creator>Sayegh, Y</creator><creator>Forouzi Feshalami, B</creator><creator>Azargoon, Y</creator><creator>Zaree, AH</creator><creator>Hassanalian, M</creator><general>SAGE Publications</general><general>SAGE PUBLICATIONS, INC</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-4457-3674</orcidid><orcidid>https://orcid.org/0000-0003-1766-1190</orcidid></search><sort><creationdate>20210301</creationdate><title>Effects of smart flap on aerodynamic performance of sinusoidal leading-edge wings at low Reynolds numbers</title><author>Mehraban, AA ; Djavareshkian, MH ; Sayegh, Y ; Forouzi Feshalami, B ; Azargoon, Y ; Zaree, AH ; Hassanalian, M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c305t-bf1651cdd8436c2b212674c40c018100e87c1622373fc3f71f6a7bb3ea7fa0e73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Aerodynamics</topic><topic>Angle of attack</topic><topic>Drag</topic><topic>Fluid flow</topic><topic>Leading edges</topic><topic>Lift</topic><topic>Low Reynolds number</topic><topic>Stalling</topic><topic>Three dimensional printing</topic><topic>Wind tunnel testing</topic><topic>Wind tunnels</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mehraban, AA</creatorcontrib><creatorcontrib>Djavareshkian, MH</creatorcontrib><creatorcontrib>Sayegh, Y</creatorcontrib><creatorcontrib>Forouzi Feshalami, B</creatorcontrib><creatorcontrib>Azargoon, Y</creatorcontrib><creatorcontrib>Zaree, AH</creatorcontrib><creatorcontrib>Hassanalian, M</creatorcontrib><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Proceedings of the Institution of Mechanical Engineers. Part G, Journal of aerospace engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mehraban, AA</au><au>Djavareshkian, MH</au><au>Sayegh, Y</au><au>Forouzi Feshalami, B</au><au>Azargoon, Y</au><au>Zaree, AH</au><au>Hassanalian, M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of smart flap on aerodynamic performance of sinusoidal leading-edge wings at low Reynolds numbers</atitle><jtitle>Proceedings of the Institution of Mechanical Engineers. Part G, Journal of aerospace engineering</jtitle><date>2021-03-01</date><risdate>2021</risdate><volume>235</volume><issue>4</issue><spage>439</spage><epage>450</epage><pages>439-450</pages><issn>0954-4100</issn><eissn>2041-3025</eissn><abstract>Sinusoidal leading-edge wings have shown a high performance after the stall region. In this study, the role of smart flaps in the aerodynamics of smooth and sinusoidal leading-edge wings at low Reynolds numbers of 29,000, 40,000 and 58,000 is investigated. Four wings with NACA 634-021 profile are firstly designed and then manufactured by a 3 D printer. Beam bending equation is used to determine the smart flap chord deflection. Next, wind tunnel tests are carried out to measure the lift and drag forces of proposed wings for a wide range of angles of attack, from zero to 36 degrees. Results show that using trailing-edge smart flap in sinusoidal leading-edge wing delays the stall point compared to the same wing without flap. However, a combination of smooth leading-edge wing and smart flap advances the stall. 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| subjects | Aerodynamics Angle of attack Drag Fluid flow Leading edges Lift Low Reynolds number Stalling Three dimensional printing Wind tunnel testing Wind tunnels |
| title | Effects of smart flap on aerodynamic performance of sinusoidal leading-edge wings at low Reynolds numbers |
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