- From 22 September – 12 November 2025 (8 Weeks, 16 Classes, 32 Total Hours)
- Every Monday and Wednesday at 1–3 p.m. Eastern Time (all sessions will be recorded and available for replay; course notes will be available for download)
- This student favorite online course covers the complete spectrum of the Gas Turbine Engine design process
- All students will receive an AIAA Certificate of Completion at the end of the course

OVERVIEW
“Design of Gas Turbine Engines: From Concept to Details” is a student-favorite 32-hour practical course, delivered in sixteen 2-hour sessions, two per week, which presents an overview of the complete spectrum of the design of aero-propulsion systems and puts each major segment in perspective. It demonstrates how thermodynamic, aerodynamic, and structural concepts are turned into hardware and illustrates the extent of current practical design techniques. Initially, gas turbine engines are modeled simply but with sufficient accuracy to enable their geometry and weight to be defined and performance to be estimated not only at a selected design point but also over a broad range of off-design operations. While the general approach has not changed for many years, it is no surprise that our capabilities have improved significantly. With practice, what were once considered to be “preliminary design” activities may now be extended, enabling project schedules to be accelerated significantly with increased confidence. The improvements made in corresponding specific software enable further technological advancements such as designing the system and its components holistically.
An introduction to leading turbomachinery component and system modelling will be provided to illustrate the theoretical aspects presented later through practical examples. In this updated version of the course, emphasis will be given to software demonstrations. After each session, the handouts will be supplemented by additional relevant material that enables participants to repeat the in-class illustrations to consolidate the demonstrations, prior to exploring AxSTREAM for themselves. Participants will have access to this comprehensive digital engineering software so that they can remain engaged between sessions by working through examples provided.
LEARNING OBJECTIVES
- We link the theory of gas turbine engines as it must be taught with its application to real engine design in industry.
- We define the structure of design and development programs for new gas turbine engines and summarize the roles of various levels of design in a new engine program.
- We look into the various types of conventional gas turbine engines along with their characteristics and the factors most affecting their performance.
- We illustrate and demonstrate compressors and turbines design at the intermediate levels of a program.
- We investigate rotordynamics as a topic which cannot be left untouched during the design of any rotating equipment to prevent catastrophic failures.
- We dive into the increasing benefits, complexity, and function of cooling in gas turbine engines.
- We show that optimum performance is obtained through relevant trade studies and appropriate compromise, made easier through holistic modeling.
- And finally, we demonstrate that – with the appropriate tools - preliminary design studies may be extended significantly to improve confidence and permit acceleration of an engine development program.
WHO
SHOULD ATTEND
The course is aimed at:
- Designers of compressors, turbines, and engine systems.
- University faculty members who teach courses in propulsion, thermodynamics and aerodynamics and other associated engineering subjects - and their students.
- Propulsion engineering specialists interested in learning about the design of turbomachinery so they may leverage their role in a gas turbine engine project.
- AIAA Member Price: $1395 USD
- Non-Member Price: $1595 USD
COURSE OUTLINE
Outline Key:
- Background Material
- AxSTREAM Demonstration
1. The Engine Design Process
a. Introduction
· Market Requirements
· Objectives of Preliminary Design
· Advances in Technology Extend the Capabilities of Preliminary Design
1.2 From Concept to Design
· The Mission - Definition & Analysis
· Cycle Analysis
· Initial Demonstration of Cycle Design
1.3 Propulsion Systems & Components
· Preliminary Design Scenario
· Component Hierarchy
· Component Modeling
· Aerodynamic vs. Structural Integrity
· Design Constraints
· Materials Database
· Model Fidelity
1.4 Levels of Design
· Zero-Dimensional: Cycle
· Brief Look at a Turbofan Cycle
· One-Dimensional: Meanline
· Brief Look at Meanline Models of HP Compressor & HP Turbine for a Turbofan
· Two-Dimensional: Throughflow, Streamline Curvature, Quasi 3D
· Brief Look at Two-Dimensional Models of HP Compressor & HP Turbine for a Turbofan
· Three-Dimensional: Computational Fluid Dynamics
· Brief Look at Three-Dimensional Models of HP Compressor & Turbine for a Turbofan
2. Engine Configurations & Cycles
2.1 Basic Operation
2.2 Definitions of Efficiency
2.3 Turbojet
· Turbojet
2.4 Augmented Turbojet
· Augmented Turbojet
2.5 Low Bypass RatioTurbofan
· Low Bypass RatioTurbofan
2.6 AugmentedLow Bypass RatioTurbofan
· Augmented Low Bypass Ratio Turbofan
2.7 High Bypass RatioTurbofan
· High Bypass RatioTurbofan
2.8 Geared Turbofan
· Geared Turbofan
3. Mechanical Systems
3.1 Introduction
3.2 Flow Path
3.3 Frames and Ducts
3.4 Shafts and Bearings
3.5 Disks
3.6 Integration – the Overall Engine
4. Secondary Air Systems
4.1 More than Turbine Cooling …
· Secondary Air Systems
4.2 … But Mostly Turbine Cooling
· Turbine Cooling
5. Compressor Meanline Design
5.1 Function, Environment, Basic Efficiency
5.2 Velocity Diagrams
5.3 Stage Characteristics
5.4 Preliminary Design and Analysis
5.5 Three-Dimensional Flow & Radial Equilibrium
5.6 Diffusion
5.7 Mean Line Performance
· Loss Models
5.8 Meanline Compressor Designs
5.9 Application of Loss Models to Compressor Designs
· Secondary Loss
· Trailing Edge Loss
6. Turbine Meanline Design
6.1 Function, Environment, Basic Efficiency
6.2 Velocity Diagrams
6.3 Stage Characteristics
6.4 Preliminary Design and Analysis
6.5 Mean Line Performance
· Loss Models
6.6 Meanline Turbine Designs
6.7 Application of Loss Models to Turbine Designs
· Profile Loss
· Secondary Loss
· Trailing Edge Loss
· Cooling Air Mixing
7. Off-Design
7.1 Mission
7.2 Component Performance Maps
7.3 Map Generation
· Compressor
· Turbine
8. Compressor Two-Dimensional Design
8.1 Concept
8.2 Compressor Design
9. Turbine Two-Dimensional Design
9.1 Concept
9.2 Turbine Design
10. Compressor 3-Dimensional Design
10.1 Features and Benefits
10.2 Compressor Design
· Lean, Bow, Twist
· Special Radial Tailoring
· Link to CFD
11. Turbine 3-Dimensional Design
11.1 Features and Benefits (Links to CFD)
11.2 Turbine Design
· Lean, Bow, Twist
· Special Radial Tailoring
· Link to CFD
12. Summary, Reprise, Questions & Discussion
Recommended Reading
H.I.H. Saravanamuttoo, G.F.C Rogers &.H. Cohen,
Prentice Hall. 5th Edition 2001.
2. “Elements of Propulsion – Gas Turbines and Rockets”
J.D. Mattingly.
AIAA Education Series. 2006.
3. “Gas Turbine Performance”
P. Walsh & P. Fletcher.
Blackwell/ASME Press. 2nd Edition, 2004.
4. “Aircraft Propulsion – Second Edition”
Saeed Farokhi
Wiley, 2014.
5. “The Jet Engine”
Rolls-Royce plc. 2005.
6. “Propulsion and Power – An Exploration of Gas Turbine Performance Modeling”. Edition 2
Joachim Kurzke, Ian Halliwell and Robert Hill
Springer, 2025.
INSTRUCTORS
Dr. Ian Halliwell obtained his B.Sc. in Aeronautical Engineering
and M.Sc. in Aerodynamics from Imperial College, London, followed by a Ph.D. in
Experimental Gas Dynamics from the University of Southampton. His professional
career began in 1975 at Rolls-Royce, Derby in Turbine Aerodynamics Research. He
then crossed the Atlantic to work for Pratt and Whitney Canada in Mississauga
and subsequently GE in Cincinnati, where he moved into the preliminary design
of complete engine systems and spent a few years on the High Speed Civil
Transport program. During that period, he also began teaching in GE after-hours
education.
While continuing to model complete engine systems, his teaching activities continued after moving to the small business world, as a contractor at the NASA Glenn Research Center and expanded through involvement with AIAA and ASME/IGTI. He chaired the AIAA Air Breathing Propulsion and Gas Turbine Engine Technical Committees and is still an active member of AIAA. He is also a member of the ASME/IGTI Aircraft Engine and Education Committees. His connection to students and university faculty was enhanced during the 14 years he organized the AIAA International Engine Design Competition for undergraduate teams.
Mr. Clement Joly is a Senior Manager at SoftInWay and has been with the company since January 2013. He received his Master’s Degree in Mechanical & Aerospace Engineering from Polytech ’Orleans in France and attended engineering classes at Wichita State University in Kansas (USA). Mr. Joly specializes in traditional and emerging technologies linked to turbomachinery components and systems.
Classroom hours / CEUs: 32 classroom hours / 3.2 CEU/PDH
- Live Lectures: The course lectures will be delivered via Zoom. You can test your connection here: https://zoom.us/test
- Lecture Recordings & Course Materials: All sessions will be available on-demand within 1-2 days of the lecture. Once available, you can stream the replay video anytime, 24/7. All slides will be available for download after each lecture.
- AxSTREAM Software Trial: This course provides both theoretical and practical aspects of turbomachinery design for liquid rocket engines. Therefore, commercial software is made available to approved attendees during the training. Please note that software trial access is subject to the approval of the software administrator.
- No part of these materials may be reproduced, distributed, or transmitted, unless for course participants. All rights reserved.
- Questions: Between lectures, the instructors will be available via email for technical questions and comments.
Cancellation Policy: A refund less a $50.00 cancellation fee will be assessed for all cancellations made in writing prior to 5 days before the start of the event. After that time, no refunds will be provided.
Contact: Please contact Lisa Le or Customer Service if you have questions about the course or group discounts (for 5+ participants).