Politecnico di Torino
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Politecnico di Torino
Academic Year 2017/18
02IHTLZ
Aeronautic propulsion
1st degree and Bachelor-level of the Bologna process in Aerospace Engineering - Torino
Teacher Status SSD Les Ex Lab Tut Years teaching
Ferlauto Michele ORARIO RICEVIMENTO A2 ING-IND/07 54 21 5 0 6
SSD CFU Activities Area context
ING-IND/07 8 B - Caratterizzanti Ingegneria aerospaziale
Subject fundamentals
The course aims to provide students with the basic knowledge of the operation of engines for aircraft propulsion. After an overview of the basic concepts of thermodynamics and mechanics, it describes the main engines based on gas turbines, evaluates their performance, analyzes its main components (nozzles, air inlets, combustors , after-burners, turbines, compressors). In a second part of the course the attention is devoted to the aeronautical propulsion based on reciprocating engines: the theoretical basics for evaluating the performance of the Otto cycle engine will be introduced.
This information will be complemented by notes of practical knowledge on technologies and methods of production and maintenance of major organ systems and accessories.
Expected learning outcomes
Knowledge of the principles of operation of the main engines of and its components.
Ability to evaluate engine performances.
Prerequisites / Assumed knowledge
Thermodynamics and basic mechanics.
Contents
Introduction. Classification of aircraft engines and fluid machines. Elements of thermodynamics.
Gas turbine engines. Ideal and real Brayton cycle. The thrust: theorem of momentum, net and gross thrust, specific fuel consumption and performance. Description and evaluation of the performance of different engines: ramjet, turbojet, turbofan, turbo-prop. Systems to increase thrust / power, afterburning. Nozzles. Subsonic and supersonic air intakes. Influence of flight conditions.
Reciprocating engines. Otto cycle. Theory and performance. The diagram indicator. Power calculations. Fuel air mixture. Effects of altitude on performances; principles of supercharging, abnormal combustion. Construction and nomenclature: architecture of the engine; crankcase; crankshaft; cylinders; pistons; connecting rods; camshaft; valves. Instrumentation. Properties of fuels and lubricants. Other systems: refrigeration lubrication, air supply, fuel supply (carburetors and fuel injection systems).
Delivery modes
The performance calculations of ramjet, gas turbine, turbojet turbofan, turbo-prop, reciprocating engines.
Texts, readings, handouts and other learning resources
- Notes and teaching materials will be provided during the lectures.
- M.J. Kroes, T.W. Wild, Aircraft Powerplants, 7th ed., McGraw-Hill, New York, 1994.
- P.G. Hill, C.R. Peterson, Mechanics and Thermodynamics of Propulsion, Addison-Wesley, 1992.
Assessment and grading criteria
Students are required to take a written examination in the first of the two rounds of regularly scheduled examination sessions held immediately after the end of term. All other scheduled examinations during the academic year will be oral.
In the written examination, students are required to answer 15 questions presented in questionnaire form. A maximum period of 2 ours is allowed. Questions include open questions where students are required to discuss topics covered during class, and open questions in which students are required to perform calculations.
During oral examinations candidates will be asked to discuss some topics covered during class and tutorials.

Programma definitivo per l'A.A.2016/17
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