Instrumentation for measurement of ambient airflow at Widmerpool station during passage of A.P.T. (IM-IS-174)

The objective of the tests was to record the ambient 'wind' speed during the passage of the advanced passenger train. Instruments used consisted of four E.R.A type "C" gust anemometers, the outputs of which were conditioned and amplified being recorded on U.V. paper and magnetic tape. A track...