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by Mizu.Koori on October 13th, 2006

Mizu.Koori

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What is the NACA used by AG Daetwyler MD-3 aircraft for its main wing?

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  • by HunterAlpha on December 6th, 2006

    HunterAlpha

    Datwyler MD-3 Swiss Trainer

    Wing Root Airfoil
    NACA 64-(1.54)14

    Wing Tip Airfoil
    NACA 64-(1.54)14

    For those who are curious

    The NACA 4-digit airfoils mean the following: The first digit expresses the camber in percent chord, the second digit gives the location of the maximum camber point in tenths of chord, and the last two digits give the thickness in percent chord. Thus 4412 has a maximum camber of 4% of chord located at 40% chord back from the leading edge and is 12% thick, while 0006 is a symmetrical section of 6% thickness.

    The NACA 5 digit series airfoil means the following: The first digit designates the approximate camber in percent chord, the second digit indicates twice the position of the maximum camber in tenths chord, the third (either 0 or 1) distinguishes the type of mean-camber line, and the last two digits give the thickness in percent chord. Thus, the 23012 airfoil has a maximum camber of about 2% of the chord located at 15% of the chord from the leading edge (3 tenths divided by 2) and is 12% thick.

    The NACA six, seven and even eight series were designed to highlight some aerodynamic characteristic. For example, NACA 653-421 is a 6-series airfoil for which the minimum pressure's position in tenths chord is indicated by the second digit (here, at the 50% chord location), the subscript 3 means that the drag coefficient is near its minimum value over a range of lift coefficients of 0.3 above and below the design lift coefficient, the next digit indicates the lift coefficient in tenths (here, 0.4) and the last two digits give the maximum thickness in percent chord (here, 21% of chord). The description for this example comes from Foundations of Aerodynamics, Kuethe and Schetzer, 2nd Edition, 1959, John Wiley and Sons, New York

    see
    http://www.allstar.fiu.edu/aero/Wing31.htm

    Comments

    • thanx..!! you're a gem..!! would you by any chance know its Rate-of-Climb (ROC) ?

      Mizu.Koori

      by Mizu.Koori on December 9th, 2006

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