MAC calculation in TiGL

[rainman110]

From moerland...@gmail.com on June 11, 2013 10:32:27

This article proposes the creation of an additional TiGL function:

[mac,xmac,ymac] = tiglWingGetMAC(cpacsHandle,wingIndex)

Aside the function tiglWingGetReferenceArea, it would be very helpful to have a tiglWingGetMAC function to determine the mean aerodynamic chord of the wing for reference purposes.

The mean aerodynamic chord is used for reference purposes in multiple tools with CPACS connections, but currently mostly calculated by the tools individually. This might lead to different interpretations and transfer of result data in a wrong way.

Outputs of the Tigl function are: [mac,xmac,ymac], respectively the mean aerodynamic chord, the x-position of the 25%-chord point along the mean aerodynamic chord and the y-position of the mean aerodynamic chord. Inputs are: (cpacsHandle, wingIndex), just as for the referenceArea determination.

The mean aerodynamic chord can be calculated according to the procedure described in the book: Toorenbeek - "Synthesis of Subsonic Airplane Design" (1976), page 441 (equations A-14 until A-16). The same procedure is listed in the attached article (sections 3.3.1, 3.5.1).

Thanks in advance!

Attachment: Paracreo Aerodynamics Article 3 - Mean Aerodynamic Chord.pdf

Original issue: http://code.google.com/p/tigl/issues/detail?id=88

[rainman110]

From martinsi...@gmail.com on June 11, 2013 22:30:42

Thanks for the detailes description! This is how it should be.

[rainman110]

From martinsi...@gmail.com on June 19, 2013 05:42:54

Labels: Milestone-Release2.1

[rainman110]

From martinsi...@gmail.com on August 27, 2013 05:51:43

Labels: -Type-Defect -Priority-Medium Type-Enhancement Priority-Low

[rainman110]

From martinsi...@gmail.com on January 16, 2014 09:06:19

MAC calc is available in TiGL 2.1.0

Status: Fixed