Internal and external acoustics of APT-PE 25 kV cabless power car (IM-NOY-047)

IMNOY 29 (Reference 1) gave the predicted external noise levels for the 1972 design version of the APT-PE 25 kV power car. Since then it has been decided to have either one or two cabless power cars in the centre of the train and the design has changed considerably. This...