Mise en place d'une méthodologie pour l'identification de modèles d'extrapolation de température: application aux équipements de nacelles de turboréacteurs

Abstract : Airbus must ensure that for all flight conditions that a given aircraft could face, the temperature of each powerplant system must be less than the corresponding critical temperature. In order to validate the temperature of each device in the flight envelope, tests at the border should be done. Airbus produces for each aircraft component many trials, either in flight or ground. However, all flight tests are faced with climatic and operational constraints which do not permit exploring the whole area. That's why Airbus needs to develop methods of extrapolation of temperature in order to predict the thermal behavior of materials and equipments in the worst conditions. The proposed techniques are based on the system identification theory which consists on heuristically determining an analytical model using physical insights and measurements. More precisely, this paper validates ARX models as a tool for the identification of the system's temperature. The models and techniques are studied, first, from a numerical simulation point of view and second, based on laboratory representative tests. The proposed techniques allow predicting the temperature of aircraft components at different conditions
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Fermin Uriz Jauregui. Mise en place d'une méthodologie pour l'identification de modèles d'extrapolation de température: application aux équipements de nacelles de turboréacteurs. Autre. Université de Lorraine, 2012. Français. ⟨NNT : 2012LORR0381⟩. ⟨tel-01749596⟩

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