Nolder

In automotive design, a nolder is a small aerodynamic shape (a strip, wing, protrusion, lip or profile) integral to bodywork or to an aerodynamic attachment – e.g., a spoiler, diffuser or splitter – perpendicular to the direction of air flow travel^[1] for the purpose of further managing and refining air flow.

Nolders are used in both high-performance as well as in less critical aerodynamic applications.

^ Paolo Scalera (February 17, 2017). "Aerodynamics, the war on winglets: a race against the wind". Gpone.com. Archived from the original on January 15, 2018. Retrieved January 14, 2018. Very soon, in addition to internal spoilers, we will begin to talk about 'nolders': these are short and thin flaps placed at the ends of the spoiler output in a position roughly perpendicular to the flow. It is a small strip placed at its maximum inclination and it allows Cz to be significantly increased when the winglets have limited dimensions.

[ref5-1] Paolo Scalera (February 17, 2017). "Aerodynamics, the war on winglets: a race against the wind". Gpone.com. Archived from the original on January 15, 2018. Retrieved January 14, 2018. Very soon, in addition to internal spoilers, we will begin to talk about 'nolders': these are short and thin flaps placed at the ends of the spoiler output in a position roughly perpendicular to the flow. It is a small strip placed at its maximum inclination and it allows Cz to be significantly increased when the winglets have limited dimensions.

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