Performance of B. M. W. 185-Horsepower Airplane Engine
This is a 1923 NASA technical report, issued through the NASA Technical Reports Server, presenting engineering test data on a 185-horsepower B.M.W. aircraft engine for aeronautical engineers. Its pictures are plain black-and-white line graphs with labelled curves plotting brake horsepower, fuel loss and air density against engine speed in revolutions per minute, with grid lines and tick labels; a designer might borrow the clean chart layout, curve labelling and restrained monochrome palette.
