Modeling and simulation of Saab Gripen’s vehicle systems
2009 (English)Conference paper (Other academic)
This paper gives an overview of the modeling and simulation work for the military aircraft JAS 39 Gripen´s vehicle systems. The vehicle systems comprise fuel, ECS, hydraulic, and auxiliary power systems and also landing gear. Vehicle systems have several modeling challenges such as both compressible air and less compressible fluids that give stiff differential equations, gforce effects, nonlinear cavitation and saturation. It is also a complex system of integrated systems that requires models with integrated system software. Dynamic models based on physical differential equations have generally been used. The physical systems were previously modeled in Easy5 and the software in MATRIXx. Changes in tools where the physical systems are modeled in Dymola and the control algorithms are modeled in Simulink have opened up for new possibilities for more advanced and more complete system simulations. Simulations have been performed during the whole development cycle of the aircraft from concept evaluation to qualification tests. The paper gives some examples from the simulations where system performance and the internal states of the system are calculated.
Place, publisher, year, edition, pages
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-52165OAI: oai:DiVA.org:liu-52165DiVA: diva2:280034
AIAA Modeling and Simulation Technologies Conference, Chicago, Illinois, Augidy 10-13