This screen is used to mirror an upper or lower surface of an airfoil. Select UPPER  to make the lower surface a reflection of the upper surface. Select LOWER to make the upper surface a reflection of the lower surface. Click on the OK button to make the change. Click on the CANCEL button to exit without making a change.


Tip  To undo your change , click on the on the AIRFOIL CAD toolbar.


Warning The modification of existing airfoils is not recommended. Without a thorough knowledge of aerodynamics and extensive wind tunnel testing modifications will in most cases reduce the performance and could lead to poor aircraft flight and stability characteristics.