Measurement of transient pressures in chipping Sodbury and patchway tunnels (TM-AERO-047)

This memorandum describes a series of train aerodynamic tests carried out in Alderton, Chipping Sodbury and Patchway tunnels. The object was to study the effect of streamlining and speed on the unsteady flows generated in these tunnels. Involved were 3 types of test train, a train of hopper wagons, a...