kenh
I see nothing I hear nothing
I agree about gaps making lots of drag. 'Cause I'm an airplane guy I read a lot about that. In one of the publications about drag, I think it was from NASA.it stated a depression will cause more drag than a projection of equal size. Now they were talking about relativity small things hear but you get the idea. ALSO the leading edge (grill area) is not nearly as important as the the trailing edge (tailgate) in creating drag. The trailing edge is MUCH more important. A sharp trailing edge is best. I can relate and have personal experience in this on a much smaller scale. I used to race RC planes. We would take a standard propeller and modify to suit our needs. I had a prop, well several, that while worked OK were not turning the RPM I wanted. We wanted about 23,500 on the ground and I was about 500 RPM short A fellow competitor looked at them and told me to sharpen the trailing edge to razor thin. I didn't get my 500 rpm but did gain about 100 rpm. He said the rest was up to me and redesigning my prop.! LOL
So if we could sharpen out tailgates a bit....... OH and all those trailer tails on semi trailers..... DON"T work. They just to help create even more vacuum to hold back the truck.
OK, back to the original thread and enough of my ramblings/rants!!!!
Ken
So if we could sharpen out tailgates a bit....... OH and all those trailer tails on semi trailers..... DON"T work. They just to help create even more vacuum to hold back the truck.
OK, back to the original thread and enough of my ramblings/rants!!!!
Ken