This week we're going to take a look at the detail around a Formula 1 driver's head and the location of his helmet, which is critical to the efficiency of the airbox.
Starting with the airbox intake, the area required needs to be able to pass enough mass airflow to allow the engine to produce maximum torque when the driver is applying full throttle. This would normally be around 75-80mph, when the chance of wheelspin is minimised.
If the inlet is too small, the car will not accelerate as fast as it should. If sized correctly to achieve this initial aim, the engine will not be able to use all the airflow that's presented to it at the other end of the speed range, say 200mph.
If it's working as it should at this speed, the airbox will create a positive pressure of around 25-30 millibars, which will help the engine performance.