Which RV have the best aerodynamics? A, B or C?
Hello, I'm planning to buy a new RV next year and I'm a newbie. For the same height, wide, weight and lenght, which ones have the best aerodynamics? A, B or C? Thanks,
Forum Discussion
Keeping it simple, three primary vehicle parameters impact fuel consumption. Aerodynamics, rolling resistance and weight. Aerodynamics is a combination of shape factor, frontal area and speed. Rolling resistance is tire friction due to tire construction, air pressure and vehicle weight. Weight affects tire loss slightly and is primarily important in speed and elevation changes. For three similarly sized trailers the rolling resistance and weight will only be a very minor factor. The big factor is aerodynamics where the resistance goes up in proportion to the square of the speed.
Note: the frontal area is the "projected frontal area", basically a cross-section area. The added area caused by a v-nose is accounted for by the "drag coefficient". A flat plate has a flow coefficient of 1.28 and a streamlined body, similar to an airfoil shape, has a flow coefficient of .04.
Note: the frontal area is the "projected frontal area", basically a cross-section area. The added area caused by a v-nose is accounted for by the "drag coefficient". A flat plate has a flow coefficient of 1.28 and a streamlined body, similar to an airfoil shape, has a flow coefficient of .04.
