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Airfoil Design ME 415 Judd Mehr Nomenclature Review Powered by - PowerPoint PPT Presentation

Airfoil Design ME 415 Judd Mehr Nomenclature Review Powered by TCPDF (www.tcpdf.org) Chord Line Mean Camber Line Max Thickness Thickness Ratio Position of Max Camber National Advisory Committee for Aeronautics (NACA) USAAF/361st FG


  1. Airfoil Design ME 415 Judd Mehr

  2. Nomenclature Review Powered by TCPDF (www.tcpdf.org) Chord Line Mean Camber Line Max Thickness Thickness Ratio Position of Max Camber

  3. National Advisory Committee for Aeronautics (NACA) USAAF/361st FG Association (via Al Richards) - http://www.ww2incolor.com/gallery/albums/U-S-Air-Force/361st_fg_p_51.jpg

  4. NACA 4-Series Airfoils NACA 2412 2 = Max Camber in %chord (o.02) 4 = Position of Max Camber in chord/10 (0.4) 12 = Max Thickness in %chord (0.12) Powered by TCPDF (www.tcpdf.org)

  5. NACA 4-Series Airfoils ±𝑧 2 = 5𝑒 .2969𝑦 8.9 βˆ’.126𝑦 βˆ’ .3537𝑦 < +.2843𝑦 ? βˆ’.1015𝑦 @ m p2 2pxβˆ’π‘¦2 , 0≀x ≀ p yc= m 1βˆ’2p +2pxβˆ’π‘¦2 , p≀x ≀ 1 1βˆ’p 2 t = thickness ratio, p = position of max camber, m = max camber, x = %distance along chord For NACA 2412: t = 0.12, p = 0.4, m = 0.02.

  6. NACA 4-Series Airfoils 𝑦 A = 𝑦 βˆ’ 𝑧 2 sinπœ„ 𝑦 F = 𝑦 + 𝑧 2 sinπœ„ πœ„ = arctan𝑒𝑧 G 𝑧 A = 𝑧 G + 𝑧 2 cosπœ„ 𝑒𝑦 𝑧 F = 𝑧 G βˆ’ 𝑧 2 cosπœ„

  7. NACA 4-Series Airfoils 2 m p βˆ’π‘¦ , 0≀x ≀ p p2 𝑒𝑧 G 𝑒𝑦 = 2 m 1βˆ’p 2 p βˆ’π‘¦ , p≀x ≀ 1

  8. NACA 5-Series Airfoils NACA 23012 2 = Max Camber in %chord 30 = Position of Max Camber in chord*2/100 12 = Max Thickness in %chord Powered by TCPDF (www.tcpdf.org)

  9. XFOIL homepages.wmich.edu/~liou/wp_AE3610xfoiltutorial-2014.doc

  10. Airfoil Resources β€’ http://airfoiltools.com/ β€’ http://m-selig.ae.illinois.edu/ads/coord_database.html Some Examples: NACA 2412 NACA 23012 Clark Y S1223

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