That's 46 times his body weight & only minor injuries - Wow!
Fernando experienced a peak impact force of 46G during his 305km/h crash at the Australian Grand Prix, FIA data from the accident investigation has revealed.
A high-speed camera that is always pointing at the driver was installed in every car from the first race of this season. This now works in conjunction with a tiny accelerometer in a driver’s earpiece that measures the forces on his head. They in turn work with an Accident Data Recorder – essentially the ‘black box’ of F1 cars – which measures all of the external forces.
With his front suspension broken, Alonso's car careered in to the wall at the side of the track with a peak lateral deceleration of 45G.
The high-speed camera revealed that Alonso's head struck the left inside of his headrest twice during the incident.
As the car slid down the grass, it dug in and flipped over – which resulted in another high lateral deceleration of 46G – barrel rolling through 540-degrees and being airborne for 0.9 seconds.
As it landed on its rear impact absorbing structure, it recorded a longitudinal acceleration of 20G.
The report concluded: "From an initial 305kph impact, the car of Alonso was able to manage three high-G decelerations and an airborne phase without major injury to the driver, primarily due to a range of safety systems on the car performing well for their designed purpose.”
This means that the Spaniard experienced a force of 46-times his own, about 3500 kg, during the shunt. Few have survived forces beyond 50G without serious injury, and anything above 60-70 kg is often fatal.
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