Papers: Aeronautics
| Year | Title | Authors | Summary |
|---|---|---|---|
| 2025 | Impact of Fuel Conditioning and Combustor Injection Temperature on a Hydrogen Turboprop (ASME Journal of Gas Turbines). | Diana G. San Benito Pastor, Nicolas Parmentier, Safran Aircraft | The study made with PROOSIS evaluates how gaseous-hydrogen combustor injection temperature affects the performance of an H₂-fuelled turboprop. Using multipoint design and off-design modelling, it assesses trade-offs among engine SFC, weight, and fuel-system complexity across flight phases. Results show that higher injection temperatures increase engine weight and SFC unless engine heat recuperation is used. Very low injection temperatures, however, may cause flame-stability issues, highlighting the need to optimise feasible fuel-conditioning conditions for future hydrogen aircraft. |
| 2025 | Integrated Design and Operation Assessment of a Preheating System for Liquid Hydrogen Fuelled Engines (ASME Turbo 2025). | Pavlos Rompokos, Sangkeun Kang, Ioannis Roumeliotis Univ. Cranfield (UK) | This paper presents a design space exploration of an LH2 preheating system modelled with PROOSIS, which uses a secondary combustor and a heat exchanger to supply the main engine with gaseous hydrogen at a constant temperature. A novel control strategy for the preheating system is proposed, which shows that heat exchanger designs with lower effectiveness can prevent water condensation without a significant penalty to overall engine efficiency. |
| 2025 | Design Space Exploration of Geared Turbofans using alternative fuels (ASME TURBO 2025). | Nabila Cava, Pavlos Rompokos, Christos Mourouzidis, Ioannis Roumeliotis Cranfield University | This paper explores the design space made with PROOSIS of Ultra High Bypass Ratio (UHBPR) geared turbofan engines for short-to-medium range aircraft, comparing performance when fueled by Jet A-1, HEFA Sustainable Aviation Fuel, and liquid hydrogen (). The study finds that HEFA offers a modest energy-specific fuel consumption () improvement and minimal engine changes, making it a viable short-term retrofitting solution. |
| 2025 | Expanding Known Performance Capabilities of Geared Turbofan Engine When Powered by LNG and Methanol. | Sergios Villette , Alexios Alexiou , Nikolaos Aretakis and Konstantinos Mathioudakis Laboratory of Thermal Turbomachines, School of Mechanical Engineering, National Technical University of Athens | The work studies a geared turbofan redesigned to operate efficiently with non drop‑in fuels such as LNG and methanol, meeting future emissions and sustainability targets. A detailed engine and combustor model is implemented in PROOSIS, based on EcosimPro’s object‑oriented architecture, to couple cycle, combustion and mission analyses in a single framework. EcosimPro’s flexible libraries, robust solvers and powerful optimisation tools allow fast comparison of multiple fuel and design options, reducing risk and time‑to‑market for low‑carbon propulsion concepts. |
| 2023 | A Tool for the Design of Turbomachinery Disks for an Aero-Engine Preliminary Design Framework. | Ioannis Kolias , Nikolaos Aretakis , Alexios Alexiou and Konstantinos Mathioudakis Laboratory of Thermal Turbomachines, School of Mechanical Engineering, National Technical University of Athens | This paper presents the Rotating Disk Optimizer, a tool that sizes aero‑engine compressor and turbine disks for minimum weight while respecting stress and geometry limits. The tool is integrated into a broader engine preliminary‑design framework built in PROOSIS, leveraging EcosimPro’s capability to couple mechanical, thermal and performance models in one parametric environment. Using EcosimPro dramatically simplifies the reuse of disk models across engine concepts and enables automated trade‑off and optimisation studies without leaving a single simulation platform. |
| 2023 | Aero-Engine Preliminary Design Optimization and Operability Studies Supported by a Compressor Mean-Line Design Module. | Alexios Alexiou, Ioannis Kolias, Nikolaos Aretakis and Konstantinos Mathioudakis Laboratory of Thermal Turbomachines, School of Mechanical Engineering, National Technical University of Athens | The study extends an aero‑engine preliminary design framework with a one‑dimensional axial‑compressor mean‑line code to link aerodynamics, geometry and overall cycle performance. Implemented as PROOSIS components on top of EcosimPro, the mean‑line module generates consistent maps used directly by engine and mission models to optimise fuel burn under operability constraints. EcosimPro’s component‑based modelling lets designers plug this new compressor module into existing engine decks, greatly accelerating multi‑disciplinary optimisation and reducing integration effort. |
| 2021 | Axial Compressor Mean-Line Analysis: Choking Modelling and Fully-Coupled Integration in Engine Performance Simulations | Ioannis Kolias, Alexios Alexiou, Nikolaos Aretakis and Konstantinos Mathioudakis Laboratory of Thermal Turbomachines, School of Mechanical Engineering National Technical University of Athens, Greece | This paper focuses on improved mean‑line modelling of axial compressors, with special attention to choking and its impact on engine behaviour. The new models are implemented and fully coupled with engine performance simulations in PROOSIS, exploiting EcosimPro’s ability to share variables and equations transparently between component and system levels. By embedding refined compressor physics directly inside EcosimPro libraries, engineers obtain more accurate decks without sacrificing the speed and robustness needed for design, optimisation and diagnostics. |
| 2021 | Novel Aero-Engine Multi-Disciplinary Preliminary Design Optimization Framework Accounting for Dynamic System Operation and Aircraft Mission Performance | Alexios Alexiou, Nikolaos Aretakis, Ioannis Kolias and Konstantinos Mathioudakis Laboratory of Thermal Turbomachines, School of Mechanical Engineering National Technical University of Athens, Greece | The authors introduce a multi‑disciplinary framework that connects engine cycle design, aerodynamics, weight, NOx emissions, controls and mission performance to evaluate novel geared turbofan concepts. The entire workflow is implemented in PROOSIS using EcosimPro’s modelling language, so that steady‑state, transient and mission analyses share the same object‑oriented models. EcosimPro’s unified environment makes it practical to include transient constraints and control behaviour early in design, revealing trade‑offs that would be missed with disconnected tools. |
| 2020 | Turboelectric Distributed Propulsion Modelling Accounting For Fan Boundary Layer Ingestion And Inlet Distortion ASME Turbo Expo 2020 | G. Athanasakos, N. Aretakis, A. Alexiou, K. Mathioudakis Laboratory of Thermal Turbomachines, School of Mechanical Engineering National Technical University of Athens, Greece. | This work analyses turboelectric distributed propulsion concepts where multiple fans ingest the aircraft boundary layer and experience inlet distortion. Detailed fan and power‑system models are coupled with the gas‑turbine core within PROOSIS, using EcosimPro to manage the multi‑domain electrical–thermal–propulsion interactions. EcosimPro’s multi‑physics capabilities allow rapid reconfiguration of architectures and operating strategies, making it an ideal platform to de‑risk disruptive propulsion layouts long before hardware testing. |
| 2018 | A preliminary study for selecting and optimizing the environmental control system | María Aranda Rosales. Technical University of Madrid (UPM). Empresarios Agrupados, Simulation Department. | The paper evaluates different aircraft environmental control system (ECS) architectures to meet cabin comfort and energy‑efficiency targets. Using EcosimPro/PROOSIS models of bleed air, vapour‑cycle and electrical subsystems, the authors simulate realistic operating scenarios and identify optimal configurations and control strategies. EcosimPro’s capacity to couple ECS, engine and electrical models in one environment enables consistent sizing at aircraft level and reduces the need for costly test‑bench iterations. |
| 2018 | ASME GT2018-76494: Direct Integration of Axial Turbomachinery Preliminary Aerodynamic Design Calculations in Engine Performance Component Models ASME Turbo Expo 2018, 11-15 June 2018, Oslo, Norway | I. Kolias, A. Alexiou, N. Aretakis, K. Mathioudakis. Laboratory of Thermal Turbomachines, School of Mechanical Engineering. National Technical University of Athens, Greece | This study embeds preliminary aerodynamic design calculations for axial compressors and turbines directly into engine performance components. Implemented within PROOSIS on top of EcosimPro, the approach lets the same component carry both geometry‑building logic and performance maps, closing the loop between aerodynamics and system behaviour. EcosimPro’s object‑oriented libraries make it straightforward to upgrade existing engine decks with these advanced components, enhancing fidelity without losing the ease of use of 0D/1D simulation. |
| 2017 | Performance Modelling of an Ultra-High Bypass Ratio Geared Turbofan 23rd ISABE Conference. 3-8 September 2017, Manchester, UK | A. Alexiou, N. Aretakis, I. Roumeliotis, I. Kolias and K. Mathioudakis. Laboratory of Thermal Turbomachines. National Technical University of Athens, Greece. | The paper develops a performance model for an ultra‑high bypass ratio geared turbofan with variable pitch fan and variable area nozzle, to evaluate fuel burn and noise targets for future single‑aisle aircraft. The model is constructed in PROOSIS using the TURBO library, leveraging EcosimPro’s modular components for fans, compressors, turbines and nozzles, and is coupled with mission‑level analysis. EcosimPro’s flexibility allows designers to explore a wide design space of cycles and variable‑geometry strategies quickly, identifying promising configurations early in the concept phase. |
| 2017 | Performance of a Supercritical CO2 Bottoming Cycle for Aero Applications | Florian Jacob (1), Andrew Martin Rolt (1), Joshua Marius Sebastiampillai (1), Vishal Sethi (1), Mathieu Belmonte (1) and Pedro Cobas (2). (1) Centre for Propulsion Engineering, Cranfield University, Cranfield, UK. (2) Empresarios Agrupados Internacional, Madrid, Spain. | This work assesses a supercritical CO₂ bottoming cycle recovering waste heat from aero‑engine exhaust to boost overall efficiency. A detailed thermodynamic model of the sCO₂ cycle is integrated with engine performance models in an EcosimPro/PROOSIS‑based framework, allowing combined optimisation of engine and bottoming system. EcosimPro’s ability to handle multiple working fluids and tightly coupled cycles in a single simulation environment greatly simplifies feasibility studies of advanced bottoming concepts for aviation. |
| 2016 | ASME GT2016-56645: Contra-Rotating Propeller Modelling For Open Rotor Performance Simulations | Alexiou, Frantzis, Aretakis, Riziotis, Roumeliotis, Mathioudakis National Technical University of Athens, Greece | The paper develops a system‑level model for contra‑rotating open‑rotor propellers to study performance, efficiency and operating envelopes. Using PROOSIS components defined in EcosimPro, the contra‑rotating propeller is coupled to the gas‑turbine core and aircraft mission model to quantify benefits and constraints. Thanks to EcosimPro’s modular libraries, open‑rotor models can be dropped into existing engine decks with minimal effort, enabling rapid comparison with conventional turbofan configurations. |
| 2016 | ASME GT2016-57722: Industrial Gas Turbine Health and Performance Assesment and Field Data | Roumeliotis, Aretakis, Alexiou National Technical University of Athens, Greece | This contribution uses advanced performance models to assess the health of industrial gas turbines by matching simulation to field data. The models are implemented in PROOSIS within the EcosimPro environment, making it possible to represent degradation, fouling and sensor noise while keeping a strong link to the original design deck. EcosimPro’s robust solvers and parameter‑estimation tools allow accurate condition monitoring and what‑if analyses, supporting predictive maintenance strategies for fleet operators. |
| 2016 | ASME GT2016-56617: Direct Coupling of a Two-Dimensional Fan Model in a Turbofan Engine Performance Simulation | Templalexis (1), Alexiou (2), Pachidis (3), Roumeliotis (4), Aretakis (2) (1) Hellenic Air Force Academy (2) National Technical University of Athens (3) Cranfield University (4) Hellenic Naval Academy | The paper couples a two‑dimensional high‑fidelity fan model with a 0D/1D turbofan performance deck to capture detailed fan aerodynamics in system studies. EcosimPro/PROOSIS provides the co‑simulation framework, allowing data exchange between the 2D fan and the overall engine model in a consistent way. By hosting both models in EcosimPro, engineers can study inlet distortion, surge margins and operability with more realism while keeping turnaround times acceptable for design iterations. |
| 2016 | ASME GT2016-57272: Assesment of Solar Steam Injection in Gas Turbines | C. Kalathakis, Ν. Aretakis, Ι. Roumeliotis, Α. Alexiou, Κ. Mathioudakis Laboratory of Thermal Turbomachines National Technical University of Athens | This paper analyses how solar‑generated steam injection can improve the efficiency and flexibility of gas turbines. Thermodynamic models of the turbine and solar steam system are built and coupled in EcosimPro/PROOSIS, enabling dynamic studies under varying solar input and load. EcosimPro’s multi‑domain capabilities make it straightforward to link renewable sources with core gas‑turbine models, helping to quantify realistic benefits and integration constraints for hybrid powerplants. |
| 2016 | ASME GT2016-57700: Investigation of Different Solar Hybrid Gas Turbines and Exploitation of Rejected Sun Power | C. Kalathakis, Ν. Aretakis, Ι. Roumeliotis, Α. Alexiou, Κ. Mathioudakis Laboratory of Thermal Turbomachines National Technical University of Athens | The work compares several solar‑hybrid gas‑turbine configurations and examines how to use surplus solar heat when the turbine is not the limiting element. Using EcosimPro/PROOSIS, the authors construct reusable component models for solar receivers, heat exchangers and gas‑turbine sections, and combine them into different hybrid layouts. EcosimPro’s component‑based approach lets teams reconfigure plants quickly and run extensive scenario analyses, providing a clear view of the most promising hybridisation strategies. |
| 2015 | System-Modelling Approach for Counter-Rotating Open Rotor Aerodynamical and Aeroacoustic Performance Studies | Aleksandar Joksimovic. Department of Aerodynamics, Energetics and Propulsion. ISAE SUPAERO. 31000, Toulouse, France. | This paper presents a system‑level model for counter‑rotating open‑rotor propulsion to study both aerodynamic performance and noise. Leveraging the modular structure of EcosimPro/PROOSIS, aerodynamic, acoustic and installation effects are integrated into a single simulation chain to assess trade‑offs at aircraft level. EcosimPro’s flexibility allows rapid refinement of component models and operating scenarios, making it well suited to maturing unconventional propulsor concepts before wind‑tunnel or flight tests. |
| 2015 | A mission assessment of aero engine losses | Oskar Thulin (1), Jean-Michel Rogero (2), Tomas Grönstedt (1). (1) Chalmers University of Technology, Göteborg, Sweden (2) Airbus Operations S.A.S., Toulouse, France | The study quantifies how different engine loss mechanisms translate into mission‑level penalties in fuel burn and emissions. By coupling detailed loss models with aircraft mission simulations in an EcosimPro/PROOSIS‑type framework, the authors identify which components are most critical for improving overall efficiency. Using EcosimPro for this kind of integrated analysis helps engine and airframe manufacturers focus development effort on the design changes with the highest payoff at aircraft level. |
| 2015 | EcosimPro/PROOSIS aircraft electrical system modelling | Víctor Pordomingo. Empresarios Agrupados Internacional. S.A., Madrid, Spain | This paper describes the modelling of an aircraft electrical power system, including generators, converters, loads and controls, with an eye towards more‑electric aircraft architectures. The system is implemented directly in EcosimPro/PROOSIS, where electrical, thermal and engine models can be simulated together under realistic flight profiles. EcosimPro’s multi‑domain libraries reduce the need for multiple specialised tools and make it easier to study failure cases, load‑shedding strategies and sizing of generators and storage devices. |
| 2015 | EcosimPro/PROOSIS permanent magnet aircraft starter and trapezoidal current control | Víctor Pordomingo. Empresarios Agrupados Internacional. S.A., Madrid, Spain | The work develops detailed models of a permanent‑magnet starter‑generator and its trapezoidal current control strategy for aircraft applications. Using EcosimPro/PROOSIS, electromagnetic, power‑electronics and control behaviour are captured in a single, reusable component set that can be connected to different engine and electrical network models. EcosimPro’s ability to integrate controls and hardware models accelerates validation of new starter‑generator concepts and supports safe optimisation of start‑up sequences and power flows. |
| 2015 | Flight Mission Study With PROOSIS | Francisco Carmona UC3M, Madrid, Spain | This study builds a tool that combines aircraft flight profiles with engine performance models to perform full mission analysis. The solution is implemented in PROOSIS, using EcosimPro’s graphical interface and libraries to link flight conditions, engine decks and fuel‑burn calculations into an intuitive application. EcosimPro allows non‑expert users to run complex mission simulations through a customised interface, making high‑value analyses available beyond the core modelling team. |
| 2015 | Design and development of a simulation tool for aircraft propulsion systems | Daniel Gordillo. UPM, Madrid, Spain | This work describes the creation of a flexible simulation tool to study different aircraft propulsion system configurations across the flight envelope. Built on EcosimPro/PROOSIS, the tool reuses gas‑turbine, nozzle and control components and provides a user‑friendly interface for scenario definition and post‑processing. EcosimPro’s object‑oriented language makes it straightforward for students and engineers to extend the tool with new components and analyses, supporting both education and industrial concept studies. |
| 2014 | Performance Characteristics and Optimisation of a Geared Intercooled Reversed Flow Core Engine | Camilleri, W., Anselmi, E., Sethi, V., Laskaridis, P., Rolt, A., and Cobas, P. Co-authored by Cranfield University, Rolls-Royce UK and Empresarios Agrupados | The paper evaluates a geared, intercooled, reversed‑flow core concept aimed at significantly reducing fuel burn and emissions. Engine performance and installation effects are studied using high‑fidelity cycle models embedded in an EcosimPro/PROOSIS‑style framework, enabling systematic parameter sweeps and optimisation. Such studies highlight the strength of EcosimPro in managing complex architectures and advanced technologies within a single, traceable model shared by engine manufacturer and partners. |
| 2014 | Concept description and assessment of the main features of a geared intercooled reversed flow core engine | Camilleri, W., Anselmi, E., Sethi, V., Laskaridis, Gronstedt, T., Zhao, X., P., Rolt, A., and Cobas, P. Co-authored by Cranfield University, Chalmers University, Rolls-Royce UK and Empresarios Agrupados | This companion paper provides a broader concept description of the geared intercooled reversed‑flow core, including technology enablers and integration aspects. System‑level performance models, developed within an EcosimPro/PROOSIS‑type environment, quantify benefits in fuel burn, NOx and noise versus state‑of‑the‑art engines. By hosting concept‑level and detailed studies in the same platform, EcosimPro supports consistent communication between research teams and helps de‑risk radical core architectures. |
| 2014 | Development and Integration of Rain Ingestion Effects in Engine Performance Simulations | Roumeliotis, I., Alexiou, A., Aretakis, N., Sieros, G. and Mathioudakis K. Laboratory of Thermal Turbomachines (LTT), National Technical University of Athens (NTUA), Greece | The study introduces models to represent the impact of rain ingestion on compressor behaviour, thrust and stall margins. These models are implemented in an object‑oriented engine performance framework based on PROOSIS and EcosimPro, enabling direct use in standard engine decks. With EcosimPro, complex phenomena like rain ingestion can be encapsulated in reusable components, so that designers can assess operability and performance penalties without resorting only to costly testing. |
| 2014 | Turbofan Engine Health Assessment from Flight Data | Aretakis, N., Roumeliotis, I., Alexiou, A., Romesis, C. and Mathioudakis K. Laboratory of Thermal Turbomachines (LTT), National Technical University of Athens (NTUA), Greece | This paper demonstrates how engine condition can be inferred from routine flight data by matching them with high‑fidelity performance models. The health‑assessment algorithms are built around PROOSIS models developed in EcosimPro, allowing component deviations to be estimated consistently with the original design deck. EcosimPro’s strong support for parameter estimation and model reuse makes it well suited for creating digital‑twin style applications that improve maintenance planning and reliability. |
| 2014 | Numerical Model of a Variable-Combined-Cycle Engine for Dual Subsonic and Supersonic Cruise | Víctor Fernández-Villace and Guillermo Paniagua Von Karman Institute for Fluid Dynamics, Belgium | The paper models a variable combined‑cycle engine capable of both subsonic and supersonic cruise, assessing its performance over a wide operating range. Using a modular simulation approach compatible with EcosimPro/PROOSIS, the authors represent mode changes, variable geometry and complex flow paths within a single engine model. EcosimPro’s flexibility in managing multiple operating modes and topologies makes this kind of advanced concept evaluation practical at early design stages. |
| 2013 | Performance Assessment of a Geared Turbofan with Intercooling and a Reverse Flow Core. (No direct link available online – need to purchase/subscribe to International Symposium Air Breathing Engines (ISABE) 2013 proceedings online). | Camilleri W, Anselmi E, Sethi V, Rolt A, Laskaridis P, Cobas P. Co-authored by Cranfield University, Rolls-Royce UK and Empresarios Agrupados | This paper quantifies the performance of a geared turbofan combining intercooling and a reversed‑flow core to achieve aggressive efficiency and emissions goals. A detailed cycle model, hosted in an EcosimPro/PROOSIS‑style framework, is used to explore design space and compare against conventional engines. The study showcases how EcosimPro enables multi‑partner collaboration around a common model, ensuring consistent assumptions and faster convergence on an optimal design. |
| 2013 | The Map Fitting Tool Methodology: Gas Turbine Compressor Off-Design Performance Modeling | Vishal Sethi (1), Georgios Doulgeris (1), Pericles Pilidis (1), Alex Nind (1), Marc Doussinault (2), Pedro Cobas (3), Almudena Rueda (3) (1) Department of Power and Propulsion, School of Engineering, Cranfield University, Cranfield, MK430AL, UK (2) Snecma, Moissy Cramayel 77550, France (3) Empresarios Agrupados Internacional, Madrid 28015, Spain | The Map Fitting Tool methodology provides a systematic way to build accurate compressor maps for performance and diagnostics using limited data. It is implemented inside the PROOSIS gas‑turbine library, extending EcosimPro’s capabilities with advanced parametric map representations and tuning tools. By embedding map‑fitting directly into the simulation environment, EcosimPro reduces reliance on proprietary maps, improves model accuracy and streamlines the creation of customer decks. |
| 2013 | Helicopter Engine Optimization for Minimum Mission Fuel Burn | A. Alexiou (1), B. Pons (2), P. Cobas (3), Mathioudakis K. (1) (1) Laboratory of Thermal Turbomachines, National Technical University of Athens (GREECE) (2) Turbomeca (FRANCE) (3) Empresarios Agrupados Internacional (SPAIN) | This paper optimises a turboshaft engine and helicopter combination to minimise fuel usage over representative missions, respecting performance and operability constraints. The optimisation loop is built around PROOSIS models in EcosimPro, which combine engine performance, control and mission modules in a single workflow. EcosimPro’s openness to optimisation algorithms and its fast, robust solvers make it possible to perform extensive design‑space exploration for complex rotorcraft applications. |
| 2013 | ASME paper GT-2012-69433: Modelling Contra-Rotating Turbomachinery Components For Engine Performance Simulations: The Geared Turbofan With Contra-Rotating Core Case Best paper award 2012 of the Cycle Innovations Committee of IGTI / ASME. | Alexiou A., Roumeliotis I., Aretakis N., Tsalavoutas A., Mathioudakis K. Laboratory of Thermal Turbomachines, National Technical University of Athens (GREECE) | The paper develops performance models for contra‑rotating turbomachinery stages and applies them to a geared turbofan with a contra‑rotating core. These models are integrated into PROOSIS engine decks using EcosimPro’s component‑based structure, allowing realistic assessment of efficiency, operability and mechanical constraints. EcosimPro’s ability to host non‑standard turbomachinery components alongside standard libraries is key to quickly maturing novel core concepts. |
| 2013 | ASME paper GT-2012-69417: Assessing Alternative Fuels for Helicopter Operation | Alexiou A. (1), Tsalavoutas A. (1), Pons B.(2), Aretakis N. (1), Roumeliotis I. (1), Mathioudakis K. (1) (1) Laboratory of Thermal Turbomachines, National Technical University of Athens (GREECE) (2) Pre-Design Team, Turbomeca (FRANCE) | This contribution evaluates the impact of different alternative fuels on helicopter engine performance, operability and emissions. Engine and mission models are implemented in PROOSIS, built on EcosimPro, so that fuel properties can be varied while keeping the same structural model of the engine. EcosimPro’s parametric modelling and scripting make it easy to run large numbers of scenarios, supporting fuel‑strategy decisions for rotorcraft fleets. |
| 2010 | Short and Long Range Mission Analysis for a Geared Turbofan with Active Core Technologies. ASME Turbo Expo 2010, Paper Number GT-2010-22701 | Alexiou, A., Aretakis, N., Roumeliotis, I. and Mathioudakis K. Laboratory of Thermal Turbomachines, National Technical University of Athens (GREECE) | The paper studies a geared turbofan with advanced core technologies and compares its performance on short‑ and long‑range missions. Mission and engine models are coupled in an object‑oriented simulation environment of the type later embodied by PROOSIS and EcosimPro, enabling systematic evaluation of fuel burn, NOx and noise trade‑offs. This early work illustrates the benefits of the EcosimPro philosophy: reusable components, unified mission and engine modelling, and fast scenario analysis. |
| 2010 | Evaluación de motores open rotor contra rotativos con caja de reducción para vuelos de corta distancia (Geared Open Rotor Performance Assessment for short range civil Aviation) | Pablo Bellocq, Pericles Pilidis, Vishal Sethi Department of Power and Propulsion, Cranfield University, UK | This study evaluates geared open‑rotor engine concepts for short‑haul aircraft, focusing on fuel burn and noise reduction relative to turbofans. Using modular performance models in an object‑oriented simulation framework compatible with EcosimPro/PROOSIS, the authors assess different design options and operating strategies. EcosimPro’s capability to represent unconventional propulsors and to link them to realistic missions helps engineers quantify the true potential of geared open‑rotor technology. |
| 2010 | Ten Years of Experience With a Small Jet Engine as a Support for Education | O. Leonard, J.P. Thomas, S. Borguet. University of Liege, Belgium | The paper summarises a decade of using a small jet engine as a teaching platform for gas‑turbine principles and diagnostics. Engine test‑bench data are complemented with simulation models implemented in an object‑oriented environment similar to EcosimPro/PROOSIS, allowing students to connect theory, simulation and measurements. EcosimPro‑style tools make it easy to create didactic models that can later evolve into industrial‑grade decks, bridging academia and industry. |
| 2010 | Performance Assessment of a Pre-Cooled Turbofan for Hypersonic Vehicle Acceleration | C. Paridaens, D. Verstraete, P. Hendrick Aero-Thermo-Mechanics Department, Université Libre de Bruxelles, Belgium | This work examines a pre‑cooled turbofan concept for accelerating a vehicle towards hypersonic conditions, analysing performance across a wide Mach range. The engine and pre‑cooler are modelled within a modular simulation framework compatible with EcosimPro/PROOSIS, so different cooling strategies and cycle options can be compared. EcosimPro’s strong support for unconventional thermodynamic cycles makes it well suited for this type of advanced propulsion feasibility study. |
| 2009 | Secondary Air System Component Modelling For Engine Performance Simulations. Journal of Engineering for Gas Turbine and Power, 131 (3), pp. 800-808. | Alexiou, A. and Mathioudakis K. Laboratory of Thermal Turbomachines, National Technical University of Athens (GREECE) | The paper details models for secondary air system components such as seals, rotating orifices and cooling flows, and their integration with whole‑engine decks. These components are implemented in an object‑oriented environment that anticipates EcosimPro/PROOSIS capabilities, allowing secondary flows to be analysed consistently with the main gas path. By turning the secondary air system into reusable simulation components, the approach improves prediction of metal temperatures, lifing margins and performance penalties. |
| 2009 | Direct-Transfer Pre-Swirl System: Performance Modelling, Validation and Optimisation. 8th European Turbomachinery Conference, Paper Number 249. | Alexiou, A. and Mathioudakis K. Laboratory of Thermal Turbomachines, National Technical University of Athens (GREECE) | This paper models a direct‑transfer pre‑swirl system supplying cooling air to turbine disks, and validates the model against experimental data. Implemented in an object‑oriented simulation environment akin to EcosimPro/PROOSIS, the model can be linked directly to engine performance simulations to quantify efficiency gains and temperature reductions. EcosimPro‑style modelling enables quick design iterations of secondary air systems and supports optimisation of cooling architectures. |
| 2007 | ASME GT2007-27086: Advanced Capabilities for Gas Turbine Engine Performance Simulations | Alexiou, Baalbergen, Kogenhop, Mathioudakis, Arendsen | The paper describes advanced features such as component zooming, distributed computing and mixed‑fidelity modelling within an object‑oriented gas‑turbine simulation environment. These ideas underpin today’s PROOSIS, which is built on the EcosimPro platform and enables engineers to couple 0D/1D performance models with higher‑fidelity component solvers. EcosimPro’s architecture turns these advanced capabilities into practical tools for day‑to‑day design, analysis and optimisation work. |
| 2006 | ICAS2006: Multiobjetive Evolutionary Algorithms applied to Aircraft Engine Design | Coelho,R., Pierret,S. and Cobas,P. | This work applies multiobjective evolutionary algorithms to balance conflicting requirements such as fuel burn, emissions and weight in aircraft engine design. The optimisation is performed around parametric engine models developed in an object‑oriented environment of the type later formalised in EcosimPro/PROOSIS. EcosimPro’s clean separation between model equations and optimisation logic allows sophisticated search algorithms to be plugged in easily, making multiobjective design exploration a routine activity. |
| 2006 | ASME GT2006-90339: Gas Turbine Engine Performance Model Applications Using An Object-Oriented Simulation Tool | Alexiou, Mathioudakis. National Technical University, Athens, Greece | This foundational paper demonstrates how a general‑purpose object‑oriented simulation tool can be used to build, extend and apply gas‑turbine performance models to a variety of industrial problems. It showcases capabilities that directly inspired PROOSIS on the EcosimPro platform: reusable component libraries, steady‑state and transient analysis, and easy integration of new components. EcosimPro turns these concepts into a robust commercial environment, giving engine manufacturers a flexible, long‑term home for their simulation assets. |
| 2005 | ASME GT2005-68678: Development of Gas Turbine Performance Models Using a Generic Simulation Tool | Alexiou, Mathioudakis. National Technical University, Athens, Greece | The work describes an object‑oriented gas‑turbine component library implemented in a generic simulation tool of the PROOSIS family, including compressors, turbines, burners, nozzles and dynamic volumes. A two‑spool turbofan model is built and its steady and transient behaviour is validated against an industry reference, capturing effects such as shaft dynamics, gas‑path volumes and heat soakage. The study demonstrates how PROOSIS enables accurate performance and dynamics prediction, frequency‑response analysis and easy adaptation of engine models to test data for design, control and health‑monitoring applications. |
| 2001 | Building a flight mechanics library using EcosimPro ( ES) | Borja García Gutiérrez and Ramón Pérez Vara, EA Internacional, Madrid, Spain | This paper develops a modular flight-mechanics library in EcosimPro—now reflected in PROOSIS—for aircraft such as the F‑16. Reusable components (rigid-body frame, aerodynamics, engine, atmosphere, actuators, sensors and autopilots) are combined to model performance, stability and 6‑DOF dynamics. The approach lets engineers trim flight conditions, generate performance curves and simulate complex manoeuvres with or without autopilots, all from a single PROOSIS-based environment. |
| 2001 | Simulation of compressible internal flow systems with EcosimPro | José Javier Alvarez, Industria de Turbo Propulsores (ITP), Madrid, Spain | This paper presents a library of internal compressible-flow components (bends, valves, junctions, plenums) built in the EcosimPro technology that underpins PROOSIS, for modelling 1‑D air networks in aero-engine rigs and secondary air systems. Using conservation equations combined with empirical loss correlations, it handles choking, zero-flow conditions and robust boundary-condition management for large networks. The work shows how PROOSIS-style libraries give turbomachinery engineers a fast, user-friendly environment to design, size and optimise complex air systems and test facilities. |
