Proposed schedule for acoustics work on APT-E train. December 1973 - February 1974 (IM-NOY-041)

During the next period of APT-E operation in December 1973 - February 1974, the intention is to obtain measurements of noise both inside and outside the train when it is running. These measurements will serve to establish the noise environment within E-train and should help to identify any particularly noisy...