Quote:
Originally Posted by renault_megane_dci
Sure, that was my first thought but then I wondered because it is a transition area so the flow is along the (half)door then turns around then back to the initial direction.
The door at an angle with appropriate radius everywhere possible sounded like a smoother transition in the full system that is the motorhome.
But I assume I was wrong ...
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There's no 'wrong' about it.
The original cab-top air deflectors for tractor-semi-trailers did the angled panel and to good effect.
You could probably put the RV in a wind tunnel and actually 'open' the doors with the windows rolled up,at varying angles until you found the degree of 'opening' which produced the lowest drag.Then fashion 'spoilers' which mimic'd the open door.