jtr1962
Storage? I am Storage!
Mass distribution also enters the equation (lower center of gravity is better) but your observation simply shows the many conflicting requirements between making a vehicle which can cope with real-world driving conditions versus one which can attain maximum possible efficiency. Ultra-low rolling resistance tires also handle poorly, but they save energy. That being said, I do remember seeing concept cars in Popular Science in the 1980s which were perfectly driveable, and had Cds in the 0.12 area. My guess is 0.10 might be attainable in a road-worthy vehicle, but anything less is probably pushing it.ddrueding said:But that car would handle for crap. We need a car with L x W x H Ratios of about 1 x 0.75 x <0.5 for the best performance.
In all honesty, we could save a bundle of energy if everyone who didn't need an SUV switched to a small/medium car with a Cd in the 0.25 to 0.30 area. These 0.12 Cd vehicles would just be the icing on the cake. And laminar flow research might yield very good results without needle-nosed body shapes. I think that box fish car Coug mentioned derived it's aerodynamic efficiency partially from laminar flow.