liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Modeling and simulation of Saab Gripen’s vehicle systems
Linköping University, Department of Mechanical Engineering, Machine Design. Linköping University, The Institute of Technology.
Linköping University, Department of Mechanical Engineering, Machine Design. Linköping University, The Institute of Technology.
Linköping University, Department of Management and Engineering, Machine Design. Linköping University, The Institute of Technology.
Linköping University, Department of Management and Engineering, Machine Design. Linköping University, The Institute of Technology.
2009 (English)Conference paper, Published paper (Other academic)
Abstract [en]

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
2009.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-52165OAI: oai:DiVA.org:liu-52165DiVA: diva2:280034
Conference
AIAA Modeling and Simulation Technologies Conference, Chicago, Illinois, Augidy 10-13
Available from: 2009-12-08 Created: 2009-12-08 Last updated: 2011-05-10Bibliographically approved
In thesis
1. Aircraft Vehicle Systems Modeling and Simulation under Uncertainty
Open this publication in new window or tab >>Aircraft Vehicle Systems Modeling and Simulation under Uncertainty
2011 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

In aircraft development, it is crucial to understand and evaluate behavior, performance, safety and other aspects of the systems before and after they are physically available for testing. Simulation models are used to gain knowledge in order to make decisions at all development stages.

Modeling and simulation (M&S) in aircraft system development, for example of fuel, hydraulic and electrical power systems, is today an important part of the design process. Through M&S a problem in a function or system is found early on in the process.

An increasing part of the end system verification relies on results from simulation models rather than expensive testing in flight tests. Consequently, the need for integrated models of complex systems, and their validation, is increasing. Not only one model is needed, but several interacting models with known accuracies and validity ranges are required. The development of computer performance and modeling and simulation tools has enabled large-scale simulation.

This thesis includes four papers related to these topics. The first paper describes a modeling technique, hosted simulation, how to simulate a complete system with models from different tools, e.g. control software from one tool and the equipment model from another. The second paper describes the use of M&S in the development of an aircraft. The third and fourth papers describe how to increase knowledge of the model’s validity by sensitivity analysis and the uncertainty sources.

In papers one and three an unmanned aerial vehicle is used as an example and in paper four a pressure regulator is the application.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2011. 52 p.
Series
Linköping Studies in Science and Technology. Thesis, ISSN 0280-7971 ; 1497
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-68068 (URN)LIU-TEK-LIC-2011:36 (Local ID)978-91-7393-136-6 (ISBN)LIU-TEK-LIC-2011:36 (Archive number)LIU-TEK-LIC-2011:36 (OAI)
Supervisors
Available from: 2011-05-10 Created: 2011-05-10 Last updated: 2011-05-26Bibliographically approved

Open Access in DiVA

No full text

Authority records BETA

Steinkellner, SörenAndersson, HenricGavel, HampusKrus, Petter

Search in DiVA

By author/editor
Steinkellner, SörenAndersson, HenricGavel, HampusKrus, Petter
By organisation
Machine DesignThe Institute of TechnologyMachine Design
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 392 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf