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up and down
The face of an analog watch or clock is enough to measure your distances.I tried to use this as an example some time back.
*The air 'strikes' the clock at 9:00 o'clock,flows up over the 12:00 o'clock position and separates at 4-seconds after.
*This is what every golf ball does.
* If you superimpose a watch dial in place of the clockface for the 'leading' part it creates essentially the 'Template'.
* the curvature of a clock from 12:00,to 4-seconds after,describes a separation-free flow and contains Mair's maximum 22-degree tangent angle.
* If you take a string and measure the distance of the 'nose' and 'tail',it reveals that the air over the tail requires twice the distance and twice the time to recover from the displacement created by the displacement of the nose.
* When this aft-body section is compared to that of the 'Template' you see a remarkable similarity.
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