Maximum engine torque requirement for Rolls-Royce Dart (IM-APT-209)

A letter from Rolls-Royce (ref. 170/6/2 dated 27.3.68) requested information as to the minimum acceptable rail torques under emergency conditions, e.g. starting on a curve or steep incline or both, for both the APT and the GTMU. This report assumes a transmission efficiency of 85% and a power turbine output...