1) Auto racing equipment
Found on
https://www.crosswordclues.com/clue/gurney-flap
The Gurney Flap (or wickerbill) 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 desig...
Found on
http://en.wikipedia.org/wiki/Gurney_flap
A vertical extension to the back edge of an Indy car wing invented by racing legend Dan Gurney to generate more down-force, especially at higher angles of attack. This device is usually made of metal, aluminum or carbon fiber and is also known as a wickerbill or a return.
Found on
https://www.ricmotech.com/Racing-Glossary_b_2.html
No exact match found.
