Quote:
Originally Posted by winkosmosis
Well of course it's not known to have attached flow-- because on most vehicles it's a sharp transition, so a bubble of air forms there.
This truck didn't have attached flow from the front to the sides until NASA put curved fairings on it
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NASA may have begun with the 1963 'oval' nose,as developed by GM researchers and then went from there.
Even with the NASA mods,the airstream will begin to deform long before it reaches the truck as reported by Prandtl in the 1920s/30s.
This cab might have had attached flow before the mods.