PPRuNe Forums - View Single Post - UK NPAS discussion: thread Mk 2

15th Mar 2012, 10:36

#130 (permalink)

Coconutty

Join Date: Sep 2001

Location: UK

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Quote:

the "20 minute" circles were actually based, not on any aviation or mathematical formula, but on an item of crockery

.. I bet the thickness of the crayons used wasn't factored in either