Theory of Aircraft Engines
Code  Completion  Credits  Range  Language 

2221176  Z,ZK  3  2P+1C  Czech 
 Garant předmětu:
 Lecturer:
 Tutor:
 Supervisor:
 Department of Aerospace Engineering
 Synopsis:

Forms of energy and their transformation. Thermal engine, thermal cycles, thermal efficiency. Thermal and construction schemes of piston and turbine engines, characteristics of their thermal cycles. Alculation of real thermal cycles of reciprocating and turbojet engines. Optimization of design parameters of thermal cycles. Thermophysical properties of air and combustion products. Combustion of hydrocarbon fuels, combustion chambers and their characteristics, harmful pollutants producing. Flow machines, their operation principles and their classification. Compressor and its operation characteristics. Turbine and its operation characteristics. Inlets and throughflow characteristics. Bypass engines, and turbofan engines. Throttle, speed and altitude performance characteristics of piston and turbojet engines. Noise generation and modes of its reduction. Of design turbojet engine operation, role of automatic engine control. Turbojet engine starting.
 Requirements:

Aircraft Propulsion, Mechanics I A, Mechanics II A, Mechanics III A, Thermodynamics A, Fluid Dynamics A
 Syllabus of lectures:

1) Forms of energy and their transformations, Thermal engine, Thermal cycles, Thermal efficiency
2) Calculations of real thermal cycles of piston and turbine engines
3) Basic construction configurations of piston and turbine aero engines and properties of their thermal cycles
4) Thermophysical properties of air and combustion products
5) Combustion of hydrocarbon fuels, combustion chambers and their performance characteristics, production of pollutants
6) Turbomachinery, compressors and turbines, construction schemes, axial flow and centrifugal compressors, performance characteristics
7) Turbine, performance characteristics
8) Inlets and nozzles and their performance characteristics
9) By pass engines, turboshaft engines
10) Operational performance characteristics of piston and turbine aero engines
11) Engine noise and noise suppression
12) Turbine engine operating regimes, acceleration and deceleration
13) Automatic engine control and starting
 Syllabus of tutorials:

1) Parametric cycle analysis of ideal gases
2) Parametric cycle analysis of real engines
3) Engine performance analysis
4) Calculation of hot air and combustion products enthalpy
5) Chemical reactions of fuel combustion and calculations of airfuel theoretical mixing ratio
6) Calculations of the flow within an elementary axial flow compressor stage
7) Calculations of the flow within an elementary axial flow turbine stage
8) Calculations of the flow within diffusers and nozzles
9) Calculation of performance parameters of a bypass engine and a turboshaft engine
10) Calculation of the air flow within a jet engine as a function of a velocity of flight
11) Calculation of an engine working curve within a compressor performance characteristic
12) Creation of a mathematical and physical model of a turboprop engines
13) The calculations of specific fuel consumption turbine engine
 Study Objective:

Explain processes of energy transformation in aircraft piston and turbine engines and describe in detail a course of thermodynamic state of working gases and fuels during their throughflow in both piston and turbojet engines. Understand a function of flow engines, particularly axialflow and centrifugal flow compressor and axialflow turbine and this both from the point of view of internal aerothermodynamics and also from the point of view of operational characteristics. Understand function of combustion chamber, formation of the airfuel mixture, combustion and its operational characteristics. Get up design thermal and construction schemes of turbojet engines, their thermal cycles for given design flight operation mode, realize a layout of the air and combustion products passage of the turbojet engine on the main flow streamline and calculate its operational characteristics. Understand the coactions of all of the jet engine construction modules and get oriented in its operation characteristics. Understand operation of the turbojet engine in off design flight regimes and understand the function of automatic control of the turbojet engine.
 Study materials:

?Mattingly J.D.: Elements of Gas Turbine Propulsion, McGrawHill, Inc., 1996
?Hűnecke K.: Jet Engines, Fundamentals of Theory, Design and Operation, Airlife Publishing Ltd, 2000
?Bathie W., W.: Fundamentals of Gas Turbines, John Wiley and sons, INC., 1984
 Note:
 Further information:
 No timetable has been prepared for this course
 The course is a part of the following study plans: