Kármán Street
← All projects

Motorsport air-brake design and load analysis

End-to-end design and engineering definition of a deployable aerodynamic air brake system for a high performance vehicle, developing the geometry in CATIA V5 through iterative design to maximize drag generation and vehicle stability during high-speed braking.

Load definition

Worst-case aerodynamic load scenarios were defined at full deployment at 490 km/h, calculating a dynamic pressure of 11.3 kPa and resulting forces of 4.9 kN to size the structure and evaluate support stresses above 800 kPa. Fatigue effects due to vortex-induced vibrations were included in the assessment, since a bluff deployable surface sheds unsteadily by definition.

Manufacturing definition

The design was translated into a manufacturable composite component using carbon-epoxy prepreg (200 g/m²), incorporating internal reinforcement through spars and ribs to withstand bending and torsional loads, while ensuring compliance with dimensional tolerances (IT8 fits, surface finish N4) and assembly constraints.

Rendered result of the air brake prototype/assets/img/projects/airbrake-prototype.png
Fig. 1 — Resulting prototype geometry.

Industrialisation

Beyond the part itself, the work extended to tooling and mould design, production planning for 30 prototypes plus 400 units, and preparation of a supplier-ready Request for Quotation package including technical drawings, bill of materials, tolerances and cost estimation.