3.1.4. Co-ordinate system
The acceleration axis system was in accordance with SAE J1733-
Sign Convention for vehicle Crash Testing. In relation to the vehicle
the positive X, Y and Z axes were forwards, rightward and downward
respectively.
3.2. Sitting into a chair tests
3.2.1. Aim
To establish the accelerations of the head and chest endured
sitting into a chair.