Compressible Flows and Propulsion Systems

General Data
Academic program	ECAM LaSalle Mechanical and Electrical Engineering Programme			Module Manager(s) : AHMAD Hafiz Muhammad,MAJDOUB Fida
EC Type : Lectures	Compressible Flows and Propulsion Systems (LIIEEng07ECompFlowPropSystMecha)
Tutorials : 12h00 Lectures : 12h00 Individual work : 36h00 Total duration: 70h00	Status	Period Semester 7	Teaching language : English

Learning Outcomes
1. Understanding the phenomenon of compressible flow and shock waves. 2. Analyze and evaluate the isentropic model for nozzle design (convergent and convergent-divergent nozzles). 3. Able to perform thermodynamic analysis to evaluate the performance parameters of air-breathing and rocket propulsion systems. 4. Explain and compare jet propulsion-related technologies applied to various types of vehicles.

Learning Outcomes

1. Understanding the phenomenon of compressible flow and shock waves.
2. Analyze and evaluate the isentropic model for nozzle design (convergent and convergent-divergent nozzles).
3. Able to perform thermodynamic analysis to evaluate the performance parameters of air-breathing and rocket propulsion systems.
4. Explain and compare jet propulsion-related technologies applied to various types of vehicles.

Content
• Jet propulsion systems and their performance criteria applied to Air-Breathing and Rocket engines: Thrust; Specific Impulse; Propulsion efficiency; Tsiolkovsky rocket equation; Breguet aircraft equation. • Fundamental of Compressible flows: Mach number and thermodynamics of compressible flows; Shockwaves; Conservation laws; application to Isentropic flows. • Rocket engine design: Stagnation and critical states; operating mode of nozzles in rocket engines; influence of combustion pressure and temperature and of nozzle geometry on the thrust finally produced. Calculation of the resulting specific impulse. • Propulsion systems combustion processes: influence of fuel composition and of Air-Fuel Ratio on the performance of air-breathing combustion processes; use of liquid and solid propellants in rocket engine combustion processes. • Air-breathing propulsion turbomachines: Thermodynamic cycles used in turbojet or turbofans engines; influence of pressure ratios, air and fuel mass flow rates, blades geometries on the engine performances (specific impulse, propulsion efficiency and specific fuel consumption).

Content

• Jet propulsion systems and their performance criteria applied to Air-Breathing and Rocket engines: Thrust; Specific Impulse; Propulsion efficiency; Tsiolkovsky rocket equation; Breguet aircraft equation.
• Fundamental of Compressible flows: Mach number and thermodynamics of compressible flows; Shockwaves; Conservation laws; application to Isentropic flows.
• Rocket engine design: Stagnation and critical states; operating mode of nozzles in rocket engines; influence of combustion pressure and temperature and of nozzle geometry on the thrust finally produced. Calculation of the resulting specific impulse.
• Propulsion systems combustion processes: influence of fuel composition and of Air-Fuel Ratio on the performance of air-breathing combustion processes; use of liquid and solid propellants in rocket engine combustion processes.
• Air-breathing propulsion turbomachines: Thermodynamic cycles used in turbojet or turbofans engines; influence of pressure ratios, air and fuel mass flow rates, blades geometries on the engine performances (specific impulse, propulsion efficiency and specific fuel consumption).

Corequis
IBENG-1-MATHS-S1, IBENG-1-MATHS-S2, IBENG-2-MATHS-S3, IBENG-2-FLUID-S3, IBENG-2-FLUID-S4, IBENG-1-THERM-S2

Bibliographie
• J. D. Anderson Jr., Modern Compressible Flow with Historical Perspective, 3rd edition, McGraw-Hill, 2003. • E. A. Baskharone, Principles of Turbomachinery in Air-Breathing Engines, Cambridge University Press, 2006. • G. P. Sutton & O. Biblarz, Rocket Propulsion Elements, 9th edition, Wiley, 2017.

Assessment(s)
N°	Nature	Coefficient	Observable objectives
1	1. Understanding the phenomenon of compressible flow and shock waves. 2. Analyze and evaluate the isentropic model for nozzle design (convergent and convergent-divergent nozzles).	50	In this exam following topic will be analyzed: 1. Propulsion systems 2. Governing equations for flow induced by disturbance 3. Fundamentals of Compressible flow (Sonic, sub-sonic and super-sonic) through nozzles
2	3. Able to perform thermodynamic analysis to evaluate the performance parameters of air-breathing and rocket propulsion systems. 4. Explain and compare jet propulsion-related technologies applied to various types of vehicles.	50	In this exam, the following topic will be analyzed: 1. Combustion in air breathing engines 2. Combustion in rocket engines 3. Jet engines But we may need to apply the concepts learned in first half of the course.