Digital simulation and modeling of a turbine engine horsepower extraction system

Digital simulation and modeling of a turbine engine horsepower extraction system is presented. The system consists of a digital valve, a fluid transmission line (piping), and a waterbrake. The system model was developed using the basic lumped-parameter approach. A computer modeling language called Advanced Continuous Simulation Language (ACSL) represents the model's response to step and profile inputs. The simulation of step and profile inputs demonstrate the control system's ability to set power levels and control changes much faster and with better accuracy than a manual system. The waterbrake equation was empirically derived and validated.