Quote:
Originally Posted by E.Roy
Could it be the C111 appears narrow, which if true means it has less frontal area? Maybe frontal area to length ratio has an effect.
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Yes,very much so.It's the plan-view corollary to the side elevation effective fineness ratio.
Kamm and Koenig-Fachsenfeld devoted quite a bit of wind tunnel model studies to quantify the effects of the L/WXH ratio for both Jaray-form,and K-form car bodies.
How the body cross-section varies along the longitudinal axis,to and from the position of maximum cross-section is critical also.
Fast pelagic fish are a good model for streamlining.Their frontal area occurs in the first 1/3rd of their body length and the last 2/3rds cleans up the disturbance.