EAG participated in the 15th EASN International Conference, held from 14–17 October 2025 at Universidad Politécnica of Madrid. This leading European event brought together key figures in aeronautics and space research under the theme “Innovation in Aviation & Space towards sustainability today and tomorrow.”

Our simulation engineers María Aranda and Víctor Villagarcía represented EAG by presenting two posters that highlighted the advanced simulation capabilities of PROOSIS and EcosimPro in modelling innovative propulsion architectures.

🔹 María showcased the NASA N3X hybrid distributed electric propulsion aircraft modelled with PROOSIS.

🔹 Víctor presented his work on electrolysers and fuel cells using EcosimPro and ESPSS, applied to space propulsion systems.

This conference was an outstanding opportunity to exchange knowledge, explore sustainable innovations, and reinforce the position of PROOSIS and EcosimPro as benchmark tools for propulsion system modelling and simulation in the aerospace sector.

Madrid, 12^th Oct 2025

Our Simulation Department of EAG participated on the Smart Energy Congress organized by Enertic at Ifema-Madrid on days 8^th and 9^th October (2025). More than 2000 people attended the two-day event, whose theme this year was the use of Artificial Intelligence to design and produce more efficient, sustainable, and competitive energy systems. Multiple energy and ICT companies participated in discussions and technical talks. The goal was to share vision, strategies, experiences, best practices, and success stories, identify opportunities for collaboration, etc. in the area of energy industry.

EAG had a stand dedicated to simulation in the energy world using AI, and multiple people interested in learning about EcosimPro and its energy toolkits visited it. EAG participants included Miguel Alcázar, Director of the Simulation Group, sales managers Keshan Dass, Manuel Vázquez, and Soledad López Postiglione, and energy simulation engineers Casto Martos and Jorge Otero.

Pedro Cobas, Technical Manager of the Simulation Group, gave a talk on the titled: 'Application of AI + Multiphysics Techniques for the Development of Digital Twins for Power Plants,' in which various mixed simulation architectures were presented and applied to a power plant (nuclear + photovoltaic + H2), showing the advantages and disadvantages of each method.

Noordwijk (Netherlands), 4^th Oct 2025

EAG Simulation Dept. and the European Space Agency (ESA) organized the Space Propulsion System Simulation Users Workshop with EcosimPro-ESPSS at ESTEC, ESA’s technology center in the Netherlands, on October 1 and 2 (2025). ESPSS stands for European Space Propulsion System Simulation and is an ESA effort to create common libraries for the European industry for the modeling of these types of systems.

More than 80 propulsion engineers from across Europe attended the two-day event. The inauguration was led by the Head of ESA’s Propulsion Division, Jamila Mansouri. The event organization was handled by Johan Steelant, ESPSS Technical Officer at ESA.

EAG participants included Pedro Cobas, Technical Manager of the Simulation Group, Maria Aranda, Head of the Aerospace Simulation Group, and propulsion engineers David Gutierrez, Carlos Escobar, and Jose Manuel Barea Lopez. All of them presented the new simulation capabilities of EcosimPro and ESPSS on the first day. Various companies such as ESA, ArianeGroup, OHB, DLR, Pangea, AVIO, etc., also presented industrial cases of space propulsion. The second day was dedicated to two courses, one basic and one advanced, on propulsion simulation.

These workshops have served to connect the propulsion user community and propose future improvements to make ESPSS one of the most advanced tools in the world in this discipline."

Paris, 20^th June 2025

Our flagship simulation brands, EcosimPro and PROOSIS, successfully exhibited at the Paris Air Show 2025 (booth F70 in Hall 4). We engaged with key aerospace professionals and demonstrated our industry-leading capabilities in system-level modelling and simulation.

Our primary mission was to showcase integrated solutions engineered to significantly accelerate the entire engineering V-cycle. Our tools enable rapid, high-fidelity analysis from preliminary design and architecture trade-offs through to full system integration and validation for demanding applications, including:

• Combustion and Thermal Management Systems
• Novel Electric and Hybrid-Electric Propulsion Architectures
• More Electric Aircraft (MEA) systems

We hosted a highly attended series of product demonstrations that focused on leveraging the multi-domain power of EcosimPro to address critical aerospace engineering challenges. The demonstrations highlighted the application of our tools for:

• Transient and Steady-State Simulation of Propulsion Cycles
• Modelling of Advanced Electric Propulsion and Power Generation Systems
• High-Fidelity Aeronautical Engine Performance and Operability Analysis
• Rocket Engine and Space Propulsion System Modelling
• Development of Digital Twins for complex, high-reliability aerospace components and subsystems

Our platform is instrumental in delivering robust, physics-based insights that de-risk development programs, drastically shorten design and verification cycles, and ensure robust system performance across the full flight envelope.

Madrid (Spain). EAI has released a new Service Pack 7.0.10 for EcosimPro/PROOSIS 2024 7.0. It fixes some bugs found by users and adds a few new capabilities. You can read the Release Notes document of the new version for more information. Below you will find the most important corrections and improvements:

• Improved support for High DPI screens. Fixed some problems with Windows appearance and menus when working with high resolution screens (4K).
• Improved silent mode installation (now it copies the .pke files in the executable folder).
• Toolkits shipped with the installation have been updated.
• Added direct access to automatic Test Wizard from libraries
• Improved performance:
  • When loading very big schematics (hundred of instances)
  • When running models using enumeratives and setofPos() function
  • When opening experiment files inheriting thousands of variables
  • When selecting variables in decks with thousands of variables
• Improved 3D widget capabilities in Monitor
• Added shadow feature in 3D widgets in Monitor
• Fixed problems setting of the script Python file in render widget in Monitor
• Fixed a problem where inequalities groups solved with zeros at the right or left terms of the equations returned a constant residue of 1.
• Fixed problems with deck FMI
• Fixed problem in Deck Wizard selecting some array elements
• Updated documentation

We strongly recommend upgrading to this new version and take advantage of these improvements. The Service Pack is available in the user cloud (if your organisation has active the product maintenance). If you cannot find it, please contact us.

Empresarios Agrupados Internacional, S.A. contributes to the advancement of the CHALUPA Project for Auxiliary Power for Zero Emission Aircraft

Madrid (Spain). Empresarios Agrupados Internacional, S.A. is proud to announce its leading participation in the development of the CHALUPA project, an ambitious effort aimed at the use of hydrogen in aircraft auxiliary power units (APU). This project, entitled "Utilization of Liquid-Based Hydrogen in Auxiliary Power Units", has as its main objective to improve the design, modeling, simulation and manufacturing capabilities of components and subsystems, paving the way for power generation in APUs powered by liquid hydrogen.

The consortium responsible for carrying out the CHALUPA project is made up of Industria de Turbo Propulsores, S.A., Airbus Operations, S.L., Empresarios Agrupados Internacional, S.A. and BeGas Motor, S.L. The Universidad Carlos III de Madrid and the Universidad Politécnica de Madrid are also involved in this collaboration.

In particular, Empresarios Agrupados Internacional, S.A. will focus on the development of modeling and simulation tools and capabilities for the analysis of different hydrogen-powered APU architectures and their subsystems, which is a key element for the technological advancement of the project.

This important research and development eort has been subsidized by the Center for Industrial Technological Development (CDTI) within the framework of the "Aeronautical Technology Program" for the year 2023, part of the State Program to Catalyze Innovation and Business Leadership of the State Plan for Scientific and Technical Research and Innovation 2021-2023. This initiative is part of the Recovery, Transformation and Resilience Plan, financed by the "Next Generation EU" funds.

Empresarios Agrupados Internacional, S.A. reaffirms its commitment to technological innovation and environmental sustainability through its participation in cutting-edge projects such as CHALUPA, which points to a cleaner and more efficient future for the aeronautical industry.

Empresarios Agrupados announces the release of the new ESPSS Version 3.8, a simulation toolkit for modelling space propulsion systems. ESPSS is an ESA Open Source library for helping the European Industry in the area of simulation of propulsion systems for rockets and satellites.

The version 3.8 is the evolution of previous releases with inputs from many european partners for adding additional capabilities for supporting:

• Simulation of ground, spacecraft and launch vehicle propulsion systems under transient and steady conditions.
• Propulsion system with two-fluid mixtures under gas, liquid and two-phase flow regimes for a wide database of working.
• Studies of water hammer, pressure drop, priming processes, etc. in fluid networks.
• Hydraulic and pneumatic systems, equipment and combustors, with heat transfer and controls loops coupled together.
• Transient simulation of liquid, solid and hybrid rocket engines.
• Simulation of ramjet engines.
• Orbital and attitude motion of satellites.
• Performance analysis and design of space engines.
• Electrical propulsion systems.
• Modeling of combustors, heat-exchangers, turbo-machinery, pumps, tanks, etc.

Today ESPSS is a common platform in Europe for this purpose. ESA is the responsible of the new updates and gathering all requests from industry.

There are two versions:

• 3.8.0 ready to work with EcosimPro 6.4
• 3.8.1 ready to work with EcosimPro 7.0

Both versions are identical, the only difference is the installer. You can select the one you want to use.

The new version provides among others:

• New pointer to function is added to several components to allow the user to impose specific values to the heat.
• Transfer coefficient using a custom function.
• Added new real fluid HFE7000 and potassium and perfect liquids NaK and Li.
• Modifications in junction and pipes for molecular flow simulation.
• Added molecular flow test case.
• Added to cooling jackets.
• Added thermal port to HTP combustor components.
• Removed Injector Monoprop, added equations to Injector Loss. Modified PreburnerPlate in accordance.
• Updated the tanks to include initialization of the liquid and vapour nodes’ temperature using vectors.
• Updated models and added new experiment to test the new variable nozzle area feature.
• Etc.

If your company has up to date the maintenance contract, you can download it now from your cloud area. If you have any problem downloading it from the cloud, please contact the support team (support@ecosimpro.com), for maintenance contract issues contact sales@ecosimpro.com