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An electronic information system has been devised to minimize problems of communication in the engineering field as they apply to the testing of industrial equipment. The paper describes a communication system that makes use of telemetry for data gathering, magnetic tape and analog computers for data reduction, a single-sheet engineering memo as the input form, and a standardized five-copy print-out specification form that gives a complete history of problem areas encountered in the program.

The Fourier Series is used in the development of a continuous function to express cam lifts and accelerations. The mathematics is extended to generate an acceleration response curve which includes the effect of valve linkage flexibility. When a standardized acceleration diagram is established, the variables can be summarized in dimensionless design parameters. Design charts for a parabolic-shaped acceleration curve, suitable for automotive applications, are included. The variables listed as dimensionless parameters include lift, half angle of event, ramp velocity, flow factor, maximum positive acceleration, maximum negative acceleration, acceleration positive pulse width, minimum tappet diameter, base circle diameter, and minimum radius of curvature. Methods of profile synthesis for unsymmetrical half angles of event and matching of profiles to flexible linkages are explained. A dimensionless design chart for valve springs is also included.