The PERRIN Gurney Flap adds aggressive styling to yPerrin's trunk spoiler. Without looking too intrusive, the Gurney flap modification adds a small amount of height to yPerrin's existing spoiler for a clean, clearly modified look.
What is a Gurney Flap?
The Gurney Flap is a small tab projecting from the trailing edge of a wing. Typically it is set at a right angle to the pressure side surface of the airfoil, and projects 1% to 2% of the wing chord. This trailing edge device can improve the performance of a simple airfoil to nearly the same level as a complex high-performance design.