• Aviation, Semester 3, position 2

The main goals of the subject are the students knowledge obtaining of the work principles, types, main elements, characteristics and usage areas of air-breathing engines. One of the principle goal is establishment of the corelation among the aircraft types and appropriate propulsion systems in order to achieve given aircraft mission goal in optimal way according to the goal functions and existing constraints.

Students are going to achieve the ability to perform decomposition, to analyse and to make synthesis of the propulsion system together with the aircraft. The student gets the knowledge of different types of air breathing engines, and their main energetic components. The knowledge obtained by student is related to the design and determining of the performance of the appropriate engines needed for engine quality estimation. Gained knowledge enables further student professional development in the field of aircraft propulsion.

Thermodynamic cycles and thrust. Propulsion efficiency and basic engine performances. Propulsion circuit and its basic elements. Ideal ramjet, turbojet, turbojet with afterburner and turboshaft engines, ideal turbofans with separate and common nozzle. Real elements of propulsion circuit: intake and nozzle. Compressor and turbine. Mixer, combustion chamber and afterburner. Working lines of turbojet and turboshaft engines. Engine starting. Engine performances: altitude, speed and throttling. Working envelopes of various engine types. Advanced propulsion types. Contemporary problems in airbreathing propulsion and future trends.

Practical parts of the classes consists of examples, analysis and discussion with the students in the areas that are discussed in theory. Thermodynamic cycles and thrust. Propulsion efficiency and basic engine performances. Propulsion circuit and its basic elements. Ideal ramjet, turbojet, turbojet with afterburner and turboshaft engines, ideal turbofans with separate and common nozzle. Real elements of propulsion circuit: intake and nozzle. Compressor and turbine. Mixer, combustion chamber and afterburner. Working lines of turbojet and turboshaft engines. Engine starting. Engine performances: altitude, speed and throttling. Working envelopes of various engine types. Advanced propulsion types. Contemporary problems in airbreathing propulsion and future trends. Practical classes on on real engine cross-section turbojet with afterburner.

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Handouts, textbook, various tables needed for numerical examples, turbojet engine cross-section.

Total assigned hours: 75

New material: 20
Elaboration and examples (recapitulation): 10

Auditory exercises: 30
Laboratory exercises: 0
Calculation tasks: 0
Seminar paper: 0
Project: 0
Consultations: 0
Discussion/workshop: 0
Research study work: 0

Review and grading of calculation tasks: 0
Review and grading of lab reports: 0
Review and grading of seminar papers: 0
Review and grading of the project: 0
Test: 10
Test: 0
Final exam: 5

Activity during lectures: 20
Test/test: 30
Laboratory practice: 0
Calculation tasks: 0
Seminar paper: 0
Project: 0
Final exam: 50
Requirement for taking the exam (required number of points): 0

Aircraft propulsion, Vasko Fotev, Belgrade 2011; Mechanics and Thermodynamics of Propulsion - Hill & Peterson 1992; Aerothermodynamics of Gas Turbine and Rocket Propulsion - G. Oates 1984; Aircraft engine design - Matinglly 2002