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See also edit
Why is this article linked to trim tab and servo tab (unrelated) but not to Gurney flap? Should this article be merged with Gurney flap? Jelliott4 (talk) 21:48, 14 January 2022 (UTC)
- As an aviation trained, wind energy aerodynamicist, I agree with jelliott4 that a "nolder" as described here, and attributed to Ferrari, as a trailing edge positioned vertical flap is a Gurney Flap, introduced sometime between 1966 and 1969 on F1 cars, and occasionally used on aircraft and wind turbines. However, the form in the initial picture, showing a perpendicular internal fold in the body work is a different feature, often used in aerodynamic design to stabilise air flow (by fixing the separation point), for which I do not have a name, so maybe "nolder" can stand for this. It should be noted that the gurney flap does increase drag but down force improvement is more significant, however the bodywork feature can be designed to produce a negligible change in drag, whilst also being more practical and stylistically pleasing than a trip wire. 82.37.165.45 (talk) 11:10, 24 October 2022 (UTC)