Welcome - please press ‘Follow’ to stay up to date with our latest news. Realis Simulation, formerly Ricardo Software enables expert design engineers to model propulsion technologies fit for the future. Realis engineering analysis tools deliver rapid results for fluids, structures and systems which empower our customers to address the planet’s biggest transport decarbonisation challenges. Based on nearly 30 years of software expertise, Realis focuses on delivering highly tailored tools to provide fast, repeatable and predictive results across existing and emerging technologies.