Aerodynamic Streamlining Template: Part-A
 

Hello all,Al is scanning materials and we hope to post,although he has "real work to do." In the meantime,I want to bring everyone up to speed on this tool.---------------------------------------------------------------- Premise: The template is designed to be a quick and dirty reference for anyone contemplating aft-body streamlining to an existing vehicle or from a "body in white."By properly scaling an image of an real or imaginary vehicle and placing the image under the template such that the "high-point" or,point of maximum roof camber of the vehicle under study matches that of the template,then the template will define an architecture for a roofline,free of flow separation,for any length you care to make it.This is equally valid for the sides of the vehicle as well.Your drag reduction will be a function of your new wake area, as compared to original wake area.Example: you extend the roof and sides back such that your new wake is 10% less than the original,then you've just cut your drag by 10%,and increased mpg by 5% at 55-mph,and 6% at 70-mph.That's it!