Capability Statement

“The HAROLD full-scale rolling contact, adhesion and braking rig is unique in combining a large 2m diameter rotating rail drum, with the capability to test a complete bogie assembly.

The rig is based around a rail drum with two circumferential rails, a bogie manipulation platform and a loading frame and actuators to allow body vertical and roll motions to be imposed through the bogie’s secondary suspension up to a maximum axle-load of 25t and running speed of 200kph.

The wheelset of the bogie under test is placed on the rail drum whilst the trailing axle is fixed to the manipulation platform. This facilitates both bogie rotation and lateral displacement relative to the rails, allowing the wheelset to be manipulated to represent various steady-state curving scenarios.”