ARTICLE T9 AERODYNAMIC DEVICES

T9.1 Aero Dynamics and Ground Effects - General

All aerodynamic devices must satisfy the following requirements:

T9.2 Location

In plan view, no part of any aerodynamic device, wing, under tray or splitter can be:

(a) Further forward than 460 mm forward of the fronts of the front tires

(b) No further rearward than the rear of the rear tires.

(c) No wider than the outside of the front tires or rear tires measured at the height of the hubs,

whichever is wider.

T9.3 Wing Edges - Minimum Radii

All wing leading edges must have a minimum radius 12.7 mm. Wing leading edges must be as

blunt or blunter than the required radii for an arc of plus or minus 45 degrees (± 45°) centered

on a plane parallel to the ground or similar reference plane for all incidence angles which lie

within the range of adjustment of the wing or wing element. If leading edge slats or slots are

used, both the fronts of the slats or slots and of the main body of the wings must meet the

minimum radius rules.

T9.4 Other Edge Radii Limitations

All wing edges, end plates, Gurney flaps, wicker bills, splitters undertrays and any other wing

accessories must have minimum edge radii of at least 3 mm i.e., this means at least a 6 mm

thick edge.