A SIMPLIFIED DYNAMIC-MODEL OF THE T700 TURBOSHAFT ENGINE

A simplified open-loop dynamic model of the T700 turboshaft engine, va lid within the normal operating range df the engine, is developed. Thi s model is obtained by linking linear state space models determined at different engine operating points. Each linear model is developed fro m a detailed nonlinear engine simulation using a multivariable system identification and realization method. The simplified model may be use d with a model-based real time diagnostic scheme for fault detection a nd diagnostics, as well as for open loop engine dynamics studies and c losed loop control analysis utilizing a user generated control law.