Quote:
Originally Posted by me and my metro
Due to grandchildren traveling with us from time to time now we have a motorhome. Our RV of choice is our 35' Avion pull trailer it is very aero, it has been referred to as looking like a big Twinkie. After the grandchildren outgrow traveling with the old people it's back to the Avion for us.
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I've been chipping away at RV drag stuff,and Hucho published a work by R.Barth in Germany who tested a series of 'Twinkies' in the wind tunnel.
If you consider them as the body of an AVION,then:
*an 11-footer is Cd 0.38
*an 18.5-footer is Cd 0.230
*a 27-footer is Cd 0.205
*a 38-footer is Cd 0.200
*and a 45.5-footer is Cd 0.205.
So your 35-footer is near the bottom of the drag bucket for these shapes,making it the lowest drag length.
