Identification et validation du modèle mathématique du moteur de l'avion d'affaire Cessna Citation X par essais en vol

Abstract

The aviation industry is interested in the elaboration of accurate aircraft models. Those models are used to predict the aircraft system outputs, and thus to have a better understanding of the parameters involved in their prediction, which might lead to an improvement of the system. This study focuses on the modeling of the Cessna Citation X business aircraft engine, the AE3007C1 designed by Rolls-Royce. The engine model is validated using flight test data, which were provided by the Cessna Citation X Research Aircraft Simulator that was designed by CAE Inc., and equipped with a level D flight dynamics toolbox. The D level is the highest fidelity rank attributed by the FAA certification authorities for flight dynamics. Firstly, a static engine model was identified using theoretical equations extracted from the literature. This model was further improved using the different estimation algorithms in order to correct the parameters values to fit the flight test data performed under static conditions (no perturbations). Secondly, the “dynamic part” of the engine was identified with a state-space model using the subspace method. The Throttle Lever Angle (TLA) step perturbation was used in this model. In this study, only the acceleration was studied. The combination of the static and dynamic models elaborated in this study aims to predict the main parameters of the engine for given altitudes, Mach numbers and Throttle Lever Angles valid for the whole flight envelope and for any TLA perturbation.

Date	8 Sept 2017
Original language	French
Awarding Institution	École de technologie supérieure
Supervisor	Ruxandra Botez (Supervisor)