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A computer-aided design method has been developed to predict, from limited information or estimates about system components, the performance of an electrohydraulic system under “feedback” control. The interactive computer program produces graphical solutions to step, ramp, and sine wave commands which allow the experimenter, designer, or engineer to optimize a particular experimental or prototype system for “best” performance in following the specified command. The simulated control system structure or an equivalent controller can then be implemented in hardware with an understanding of the realizable performance of the system before the components are purchased, fabricated, and assembled into the actual system.

This paper describes several applications of telemetry in making experimental measurements inside the rotary combustion engine. Short-range radio telemetry was used as the wireless data link from transducers on the moving rotor to the stationary housing of a firing engine. The procedures used to measure motion, temperature, and pressure in this difficult and hostile environment are described in detail. The problems encountered and the limitations of the measurement system are discussed in order to illustrate the application of this experimental method.