The APT project's initial objectives are to produce the optimum design of train to maximise the potential of railway assets. Fundamental research into railway dynamics at the Railway Technical Centre, Derby, has resulted in the design of a 155 mph train to run on Britain's existing railway lines.
Diagram of the swinging arm trailer bogies which support ends of adjacent car bodies producing the articulated train formation. The wheel sets are designed for lightness to minimise track damage and promote dynamic stability to negotiate curves using tread forces for guidance rather than flange forces. The large diameter tubular axles house the hydrokinetic brake.
Diagram of the power bogie fitted to APT-E. This bogie is of a hybrid form permitting a conventionally mounted D.C. traction motor to be used, while retaining as far as possible all the desirable features of an APT suspension; adequate margin of stability under all conditions, good isolation of car body from track irregularities, ability to negotiate main line curves without flange contact and coach tilting equipment for comfortable cornering.
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