Patent attributes
An aircraft is decelerated by applying a braking force to a wheel of the aircraft as it moves along the ground. An anti skid controller calculates the braking force to be applied by taking into account data relating to the vertical load transmitted between the ground and the wheel and data relating to the slip between the ground and the wheel. Predictions (box 13b) made regarding how the vertical load will change and data (box 13a) concerning the relationship between slip and the ground to wheel friction coefficient are both taken into account when calculating the braking force to be applied. Skids may thereby be predicted in advance and may be reduced or even avoided.