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Windmill Modelling of Advanced Turboprop Engines

Jonathan Epifani

Windmill Modelling of Advanced Turboprop Engines.

Rel. Dario Giuseppe Pastrone. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Aerospaziale, 2023


This thesis work, developed in collaboration with AvioAero - A GE Aviation Business, has the goal to analyze the behavior of an engine in windmill conditions. The windmilling phenomenon is among the sub-idle conditions of an aircraft engine. Windmilling is in far off-design conditions, because of this, the aero-thermal processes within the components are extremely complicated and neither fully understood nor simple to predict. The objective of this thesis project is the prediction of the core speed curve after engine shutdown earlier with a mathematical model. The mathematical model is based on a simple learning algorithm and consists of two different regressions. The mathematical model was built from experimental flight data obtained during the Denali aircraft test flight campaign. Prediction of the behavior of the engine during the shutdown was studied also using NPSS (Numerical Propulsion System Simulation). NPSS is a component-based object-oriented engine cycle simulator that allows the analysis of the transient performance prediction of the engine. An integrated model was used, and some power extraction elements were analyzed and corrected

Relators: Dario Giuseppe Pastrone
Academic year: 2022/23
Publication type: Electronic
Number of Pages: 122
Additional Information: Tesi secretata. Fulltext non presente
Corso di laurea: Corso di laurea magistrale in Ingegneria Aerospaziale
Classe di laurea: New organization > Master science > LM-20 - AEROSPATIAL AND ASTRONAUTIC ENGINEERING
Aziende collaboratrici: GE AVIO S.R.L.
URI: http://webthesis.biblio.polito.it/id/eprint/27924
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