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Abstract
This article introduces as new approach for flight envelope clearance of aircraft. This can now be performed as one continuous test, resulting in a major time saving. Both analysis of the current behaviour of the structure, and prediction towards higher velocities are important for flight flutter testing, and are dealt with in this article. The timevarying weighted nonlinear leastsquares estimator is used to obtain the frozen system poles of a cantilever wing under test in a low speed wind tunnel. The obtained smooth variation of the transfer function coefficients is used as basis for predicting the damping ratio towards higher velocities. Comparison with timeinvariant measurements have shown that only one tenth of the measurement time is needed to obtain equal uncertainties on the estimates when performing a flight flutter test as one continuous test.
Original language  English 

Title of host publication  ISMA  USD2012 International Conference on Uncertainty in Structural Dynamics, 1719 September, 2012 
Pages  30133024 
Number of pages  12 
Publication status  Published  17 Sep 2012 
Event  International Conference on Uncertainty in Structural Dynamics, USD2012  Leuven, Belgium Duration: 17 Sep 2012 → 19 Sep 2012 
Conference
Conference  International Conference on Uncertainty in Structural Dynamics, USD2012 

Country  Belgium 
City  Leuven 
Period  17/09/12 → 19/09/12 
Keywords
 timevarying systems
 identification
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Dive into the research topics of 'Flutter speed prediction based on frequencydomain identification of a timevarying system'. Together they form a unique fingerprint.Projects
 1 Finished

DWTC282: Dynamical systems, control and optimization
Pintelon, R., Vandewalle, J., Aeyels, D., Sepulchre, R., Kinnaert, M., Vande Wouwer, A., Blondel, V., Winkin, J., Boyd, S. & Leonard, N.
1/04/12 → 30/09/17
Project: Fundamental