What is the panel below the side of the car called?

[LaAllison]

The panel below the side of the car is called the front spoiler. Here are the specific details: 1. Spoiler: It refers to one of the ways a car reduces drag by guiding air in a specific manner. Commonly used on high-performance cars, it allows for faster cornering and helps reduce drag at high speeds. On commercial vehicles, spoilers are often used for styling purposes and may not provide any aerodynamic benefits. 2. Air deflector: When airflow moves beneath the car, the rear lower air deflector can expand the range of this high-speed, low-pressure airflow as it exits the underside and enters the rear of the car. During this process, the speed of the airflow drops significantly. The low-pressure airflow beneath the car creates downforce due to the higher pressure of the airflow above the car, resulting in a suction effect that pulls the car downward. The angle of the rear lower air deflector is crucial, as changes in angle produce different downforce characteristics. If the angle is too large, it can cause airflow separation, leading to turbulence, increased drag, and instability, while also failing to generate downforce. If the angle is too small, the effect will be very limited, as it cannot expand the airflow range or rapidly reduce the airflow speed when expelling the air.