Impact of hydrofoil shaped imperfections on lift and drag characteristics

This paper examines the impact of production imperfections on the lift and drag characteristics of hydrofoils, in order to ensure equal opportunities for racing athletes. To achieve this research objective, 18 regatta class approved hydrofoils underwent 3D scanning. Measurements of the sweep, anhedral, and angle of attack for each section were conducted based on the scans. Simple load tests were also employed to assess the deformation of the foil under working conditions. Using the data obtained from these measurements, we developed a simplified parametric model of the foil. Subsequently, CFD simulations were conducted for selected parameter ranges, in order to determine the lift and drag of the hydrofoil. The research revealed variations among the foils, with some significantly affecting the lift characteristics. Of these, variations in the angle of attack had the greatest influence on lift.

---

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki i promocja sportu (2025).