Air Tabs Installed
Well I pull the trigger to and install Air Tabs on my camper. Hoping to cut the wind noise around the passenger door and reduce bugs. We will see how it works. ART
Forum Discussion
Vortex generators create turbulent flow. Turbulent flow is much better at sticking to surfaces and following curves, hence (the theory is) will close in behind a blunt shape more quickly, reducing the size of the separation bubble behind it. So they should themselves cause a little extra drag, but the reduction in drag due to the smaller separation bubble you are dragging behind more than makes up for it. That's the theory.
I am surprised that it made a big difference placed under the overhang on a camper, but airflow around a complex shape is not easily predictable - even with super computers and software costing hundreds of thousands of dollars. Nothing like an experiment! I have a Bigfoot on a 1999 ford that looks very similar to yours, I think I may try it!
Did you notice any difference in noise with rear sliding window open/closed, before/after the air tabs? We don't have a huge increase in wind noise with the camper, but much more if the window is open. Even with a foam boot in place for the cat crawl through.
How tall are they, i.e., how much did they reduce your camper/cab clearance?
I am surprised that it made a big difference placed under the overhang on a camper, but airflow around a complex shape is not easily predictable - even with super computers and software costing hundreds of thousands of dollars. Nothing like an experiment! I have a Bigfoot on a 1999 ford that looks very similar to yours, I think I may try it!
Did you notice any difference in noise with rear sliding window open/closed, before/after the air tabs? We don't have a huge increase in wind noise with the camper, but much more if the window is open. Even with a foam boot in place for the cat crawl through.
How tall are they, i.e., how much did they reduce your camper/cab clearance?
