Perfect Ratios
While working on drawings for pi is by design, I noticed a propeller like shape.
Perhaps indicating optimum air/water flow possibilities for aircraft, ships, etc.
This design has many interesting features, such as:
The small blue diamond sitting on top of the red line contains the location for π 3.14159...,
All horizontal and vertical measurements end with the repeating remainder 142857
The proportions/ratios of this design are as perfect as 22/7 (3.142857...)
The two circle diameters 64.28...% / 35.71...% = 1.8
The number seven recurs frequently, for example, the height of the 100mm propeller (or %),
divided by one-half the thickness of the central disk (14.285714...mm) is 7.
The disk diameter 53.428... / 17 = 3.142857..., and 17 is the 7th number in the list of primes.
The circle diameters decrease toward the center by 3.5 x. There is also a Sun and Planets link.
Right triangles.
The central disk correctly depicted as football shaped in these next images.
Perfect ratios and patterns are a universal phenomenon,
and the torpedo shaped Bluefin Tuna is one such example.