In the latest era of ground effect in Formula 1, the shape of teams’ sidepod designs has become a focal point of discussion. Initially, there was a fascinating array of different concepts in play, but it seems that Red Bull’s downwash concept has emerged as the favored approach, with many of its rivals following suit and adopting similar designs. Ferrari, for instance, abandoned its in-wash solution at the Spanish Grand Prix in favor of a design that aligns more closely with Red Bull’s. Similarly, Mercedes moved away from its zero-pod idea in Monaco. Despite these changes, teams have downplayed the significance of sidepod shape, asserting that it does not significantly impact overall car performance.
However, this viewpoint is vehemently dismissed by Stella, a key figure in a team that has aggressively altered its sidepod shape this year, resulting in a remarkable improvement in performance. Stella argues that the sidepod’s impact on airflow over and around the car, as well as the floor area, is essential for lap time. He asserts that any team claiming that bodywork and sidepods have no effect under the current regulations is akin to the long-nosed character, Pinocchio, whose nose grew when he lied.
Stella emphasizes that all aerodynamicists, whether working in simulation, wind tunnels, or track testing, understand the symbiotic relationship between bodywork and sidepods. The interaction between the two elements adds a fascinating dimension to the sport. The variety of sidepod shapes and their interaction with the floor is evident, and it appears that all teams are converging towards a similar direction. Stella believes that this convergence will likely continue in the future.
For Stella, the floor of an F1 car is crucial for performance, but the effectiveness of the underside can be significantly enhanced through the right design of the sidepod. He argues that having wide sidepods helps initiate airflow that seals the floor more effectively, similar to the function of skirts in the previous ground effect era, which increased downforce. Stella explains that the primary concept behind Red Bull’s sidepods is not simply downwash but rather the wide sidepods themselves. These wide sidepods act like mini skirts, aerodynamically aiding suction in the floor. It is clear that this concept is indispensable for maximizing floor suction and car load, and it is evident that teams are increasingly gravitating towards this design approach.
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