Using the BLADE type turbines sort of is counter productive for RV TRAILERS. The VAWT TURBINE type however to me would be a great system to mount on top of your RV trailer. It would look like the ATTIC VENT thingies...
This would turn a shaft down to a generator inside your trailer...
Look something like this on TOP...

the big problem with stationary wind generators they have to have a SUSTAINED 5MPH wind force to work. This is hard to find everywhere. Only mountain ranges or shore line areas really have these sustained winds. Note all of the blade type wind generators farms are usually in the TEXAS and north areas of the US where there is alot of wind following the East side of the divide...
Roy Ken