AXESSIM SAS

Their core work

AXESSIM is a French engineering SME specializing in electromagnetic compatibility (EMC) simulation and analysis for the aerospace sector. Their core work involves developing computational methods and software platforms to predict and manage electromagnetic interference in aircraft systems — a critical certification challenge as modern aircraft shift from metallic to carbon fiber composite airframes, which behave very differently under lightning strikes and high-intensity radiated fields. In EPICEA they built an integrated simulation platform for electrical system installation in composite structures; in ANALYST they advanced statistical analysis techniques to make EMC predictions more robust and cost-effective for aeronautical programs. Their practical value lies in reducing the physical testing burden during aircraft development and certification.

What they specialise in

How they've shifted over time

AXESSIM's two projects span 2016–2021 and show a coherent but deepening trajectory within the same technical domain. EPICEA (2016) addressed the engineering integration challenge — building a platform to handle electrical system installation in composite structures, which is fundamentally a design and tooling problem. ANALYST (2018) moved upstream toward the analytical methodology layer, developing statistical techniques to improve the rigor and confidence of EMC predictions. This shift suggests they are maturing from platform builders toward methods developers — a sign of deepening specialization rather than broadening scope.

AXESSIM appears to be moving toward higher-value analytical and methodological work in aerospace EMC, which positions them well for certification-support roles as composite aircraft programs scale up.

How they like to work

AXESSIM has participated in both projects as a specialist partner, never as coordinator — a pattern consistent with a niche technical SME that is brought in for a specific capability rather than to lead a program. Their total consortium footprint is small (5 unique partners across 2 projects and 3 countries), suggesting they work in tightly scoped technical teams rather than large open consortia. This makes them a reliable specialist contributor but not a natural consortium builder or project manager.

AXESSIM has worked with 5 distinct partners across 3 countries, both within the Clean Sky 2 joint technology initiative and a standard RIA. Their network is small and concentrated in European aerospace — likely including at least one major airframer or Tier-1 supplier given Clean Sky 2's structure.

What sets them apart

AXESSIM occupies a very specific niche: EMC simulation for composite aircraft structures, which is a genuinely hard problem that has grown in importance as the industry shifts to carbon fiber airframes (A350, B787 and their successors). Few SMEs have focused this narrowly on the intersection of computational electromagnetics, composite materials, and aeronautical certification. For a consortium building a Clean Sky or Horizon Europe project touching aircraft electrification, composite integration, or certification methodology, AXESSIM brings exactly the kind of deep specialist knowledge that is hard to source elsewhere.

Highlights from their portfolio

• EPICEA
  Their largest project (€340,000, Clean Sky 2 Innovation Action) and the foundational work establishing their EMC simulation platform for composite aircraft electrical systems.
• ANALYST
  Represents a methodological step forward — applying statistical techniques to EMC analysis in aeronautics, suggesting ambition beyond tool-building toward scientific method development.