phagan7
Aerospace
- Mar 9, 2003
- 1
I have often wondered about the small circular objects on the sides of some tractor trailers. There are usually two rows and one column per 3ft panel. They stuck out about 2 inches from the trailor surface. Do the serve an aerodynamic purpose?
Any help would be appr.
phagan7@aol.com
Any help would be appr.
phagan7@aol.com