Fast Prediction of Wing Rock Onset Based on Computational Fluid Dynamics
Final rept. 1 Jun 2003-27 Mar 2006
GLASGOW UNIV (UNITED KINGDOM)
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This report results from a contract tasking University of Glasgow as follows The objective is to develop efficient CFD based techniques for the prediction of wing rock instabilities for a delta wing-body. Two approaches in addition to the basic time marching approach will be investigated. First direct calculation of the Hopf point for the onset of the instability for a fixed sweep angle the incidence is regarded as the bifurcation parameter will be developed based on techniques previously developed for aeroelasticity. Secondly reduced order models will be developed driven by CFD results to again predict the instability onset efficiently. Finally an assessment of the different methods will be carried out to provide guidance for future application in certification by analysis and design. The derived solutions will also be examined to answer some of the current questions as to the physical mechanisms for wing rock.
- Flight Control and Instrumentation