McLaren MP4-23 - front barge board development 11 May 2008
On all the cars the front end plays a crucial role in terms of aero efficiency and even the tiniest detail can make a big difference. One example in Turkey is the small barge boards on the McLaren, placed just under the front suspension's lower wishbone, which feature a horizontal arched section (yellow arrow). The height of this arch has been increased, providing a more pronounced channel for the airflow around the lowest section of the barge boards. This generates a sort of Venturi effect that not only provides slightly more downforce, but more importantly speeds up the airflow in this area so as to increase the extraction of air from under the front wing's main profile, hence improving its efficiency. It's a solution very different from Ferrari's vented nose, but one whose function is almost the same.