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F.8.4.1 Teams must do one of:
Use the approved Standard Impact Attenuator from the FSAE Online Website
Build and test a Custom Impact Attenuator of their own design
F.8.4.2 The Custom Impact Attenuator must meet the following:
a. Length 200 mm or more, with its length oriented along the fore/aft axis of the Chassis.
b. Minimum height 100 mm (perpendicular to the ground) and minimum width 200 mm (parallel to the ground) for a minimum distance of 200 mm forward of the Front Bulkhead.
c. Segmented foam attenuators must have all segments bonded together to prevent sliding or parallelogramming.
d. Honeycomb attenuators made of multiple segments must have a continuous panel between each segment.
F.8.4.3 If a team uses the Standard Impact Attenuator, and the outside profile of the Front Bulkhead is greater than 406 mm x 355 mm, then one of the following must be met:
a. The Front Bulkhead must include a diagonal or X-brace that is a Front Bulkhead Support tube meeting F.3.2.1.b, or Equivalent for Monocoque bulkheads
b. Physical testing must be performed to prove that the Anti Intrusion Plate does not permanently deflect more than 25 mm.