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8.14: Input Angle for Geometric Twist

Often it is necessary to twist a wing in order to constrain a definite lift distribution.
Click the folder button 'Angle'. The root wash angle will be displayed in the input field 'Root Wash Angle [°]'.
Valid values lie between -45° and +45°.
The wash angles centre of rotation lies at the leading edge.
Near the input field are Up/Down-buttons located. They can be used to change the root wash angle with mouse clicks.
A click on the right mouse button pops up a menu to set the increment between 0.00001° and 1°.



The following picture shows three wings. The left wing has no twist, the middle wing has 20° twist at the root airfoil and the right wing has -20° twist.
The shown angles are strongly exaggerated, normally geometric twist angles range between 2° and 10°.



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