EU project RealSim (Real-time Simulation for Design of Multi-Physics Systems, 2000-2002).
Chairman of the Modelica Association which develops and maintains the object-oriented modelling language Modelica (since 2000).
Contributions to the free Modelica standard library, such as MultiBody (3-dim. mechanics), Rotational (1-dim. rot. mechanics), StateGraph (hierarchical state machines), Blocks (input/output blocks), Media (large media library), Fluid (basic components for thermo-fluid pipe flow).
Commercial DLR PowerTrain library to model power trains of vehicles (since 2003).
BMBF-Projekt PAPAS (Plug-And-Play Antriebs- und Steuerungskonzepte für die Produktion von Morgen, 2003-2006).
LUFO III project KATO (cabin systems, 2003-2007)
EU project POA (Power optimized aircraft, 2002-2005)
EU project VIVACE (Value improvement through a virtual aeronautical collaborative enterprise, 2004-2007)
EU network of excellence HYCON (Hybrid Control: Taming Heterogeneity and Complexity of Networked Embedded Systems, 2004-2008)
EUROSYSLIB - Modelica libraries for embedded systems modelling and simulation (large ITEA2 project, 2007-2009, technical coordinator of the project and DLR project leader)
MODELISAR - From System Modeling to S/W running on the Vehicle (large ITEA2 project, 2008-2010, DLR project leader; major outcome: The Functional Mockup Interface)
MODRIO - Model Driven Physical Systems Operation (large ITEA2 project, 2012-2015, DLR project leader)