[en] A number of different identification methods are considered as candidate
approaches to undertake online flight flutter testing. Rather than flying the test aircraft to a
new flight condition and then performing a data analysis at a constant flight condition, it is
shown how it is feasible to track changes in frequencies and damping ratios as the flight
speed is increased. It is also possible to provide an updated estimate of the predicted flutter
speed, giving the flight engineers added confidence in the margin of safety. Both frequency
and time domain methods are evaluated on a simulated 3 DOF aeroelastic system. These
preliminary results show that such an approach is feasible although further work is required
to determine the best testing and analysis approach.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Dimitriadis, Grigorios ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale
Cooper, Jonathan E; University of Manchester > School of Engineering
Language :
English
Title :
Online Flight Flutter Testing
Publication date :
September 2001
Event name :
International Conference on Structural System Identification
Event organizer :
COST F3, Universität Gesamthochschule Kassel
Event place :
Kassel, Germany
Event date :
du 5 septembre 2001 au 7 septembre 2001
Audience :
International
Main work title :
Proceedings of the International Conference on Structural System Identification
