Provide the know-how to analyse the operating principle and characterise the performances of the propulsive systems used in aeronautics. The objective is pursued strengthening the expertise in thermodynamics and gas dynamics. Specific attention will be paid to the description of the fundamental elements of propeller- and jet-engine-based propulsive systems.
scheda docente
materiale didattico
Introductory concepts; governing equations for compressible flows; quasi-1D model for compressible flows (isoentropic flows); 1D model for compressible flows; normal shocks; evolution of compressible flows in convergent and divergent ducts; entropy evaluation in a compressible flow. Basics of thermodynamics; definition of a thermodynamic cycle and calculation of its efficiency (ideal and real).
PART 2: AICRAFT PROPULSIVE SYSTEMS
Introductory concepts and classification. Performance parameters. Definition of thrust and power. Definition of efficiencies. Simple turbojet; turbofan; ramjet; turboprop. Propellers and blade element theory. Nozzles and diffusers (sub- and super-sonic).
HILL P., PETERSON C., “MECHANICS AND THERMODYNAMICS OF PROPULSION”, ADDISON WESLEY PUBL., 2ND ED., 1992.
CUMPSTY N., “JET PROPULSION”, CAMBRIDGE UNIV. PRESS, 1997.
Programma
PART 1: ELEMENTS OF GAS-DYNAMICS/THERMO-DYNAMICSIntroductory concepts; governing equations for compressible flows; quasi-1D model for compressible flows (isoentropic flows); 1D model for compressible flows; normal shocks; evolution of compressible flows in convergent and divergent ducts; entropy evaluation in a compressible flow. Basics of thermodynamics; definition of a thermodynamic cycle and calculation of its efficiency (ideal and real).
PART 2: AICRAFT PROPULSIVE SYSTEMS
Introductory concepts and classification. Performance parameters. Definition of thrust and power. Definition of efficiencies. Simple turbojet; turbofan; ramjet; turboprop. Propellers and blade element theory. Nozzles and diffusers (sub- and super-sonic).
Testi Adottati
Notes provided by the professorHILL P., PETERSON C., “MECHANICS AND THERMODYNAMICS OF PROPULSION”, ADDISON WESLEY PUBL., 2ND ED., 1992.
CUMPSTY N., “JET PROPULSION”, CAMBRIDGE UNIV. PRESS, 1997.
Bibliografia Di Riferimento
Notes provided by the professor HILL P., PETERSON C., “MECHANICS AND THERMODYNAMICS OF PROPULSION”, ADDISON WESLEY PUBL., 2ND ED., 1992. CUMPSTY N., “JET PROPULSION”, CAMBRIDGE UNIV. PRESS, 1997.Modalità Erogazione
The course is carried out through traditional lectures given in the room. Educational material will be made available through the web site (including the Moodle platform). During the course, seminars from aerospace industry experts will be given. Visits to aerospace research centers and companies close to the city area are also planned. The number and location of the visits will be decided during the course along with possible organization constraints. Remote lessons (MS Teams platform) might be envisaged if needed.Modalità Frequenza
The attendance to the class is not mandatory but recommended in order to pass the exam. The attendance is not verified and there are no penalties for those who do not attend the class.Modalità Valutazione
Oral and written examination. The examination dates will be communicated in due time and published on the website.