Control mode analysis for advanced concept aero-engines

This paper describes a novel approach to the problem of control mode analysis for advanced concept gas turbine aero-engines. Using a multiobjective evolutionary algorithm, candidate control modes are selected and tested on models of the propulsion system to assess performance, safety, stability and other important design criteria. An example controller design problem, considering some of the problems likely to be associated with new variable cycle engine concepts, is presented to demonstrate how the proposed approach may be employed to examine many design objectives, from different disciplines, in parallel. Potential control schemes are evaluated and compared with one another within an optimization framework. This comparative analysis of different control modes may be used to make more informed decisions regarding the nature of the control to be employed, acceptable performance margins and elements of the engine design