FHA method for VBV position control function of FADEC system based on aero-engine dynamic model

Traditional Functional Hazard Assessment (FHA) method is hard to identify those engine effects which lack of visualization. In order to solve this problem, this paper develops a model-based FHA method for Variable Bleed Valve (VBV) position control function, performs two groups of simulations by using aero-engine dynamic model, and introduces an exemplary FHA for VBV position control function based upon simulation results. The application of this method shows that it is feasible and effective.