Nonlinear response of aeroservoelastic systems using discrete state-space approach
Nonlinear response of aeroservoelastic systems using discrete state-space approach
- New search for: Chen, P.C.
- New search for: Sulaeman, E.
- New search for: Chen, P.C.
- New search for: Sulaeman, E.
A generalized direct simulation method using a discrete time-domain state-space approach for transient response of both open- and closed-loop nonlinear aeroelastic systems is developed. Based on a nonlinear parameter scheme that divides the nonlinear system into sublinear systems, the method first assembles a set of discrete time-domain state-space equations and then computes the transient response by switching the time-integration procedure between this set of state-space equations. In so doing, various nonlinearities in structures, aerodynamics and/or control systems can be included. The method is validated by correlating the transient response of a three-degree-of-freedom airfoil section in freeplay with the experimental and numerical results obtained by Conner et al. The stability of a strut-braced wing with buckling effects at two trim conditions is also studied, which shows that the aeroelastic stability of the present strut-braced wing is trim-condition dependent. Such results clearly could not be obtained if using a linear aeroelastic analysis.
Document information
Nonlinear response of aeroservoelastic systems using discrete state-space approach
Simulation der nichtlinearen Übergangsantwort eines aeroelastischen Servosystems mit einem diskreten Zustandsraumansatz
AIAA Journal ; 41 , 9 ; 1658-1666
2003
9 Seiten, 14 Bilder, 1 Tabelle, 26 Quellen
Article (Journal)
English
Aerodynamik , dynamische Belastung , elastische Eigenschaft , Flugzeugsteuerwerk , Landeklappe , nichtlineares System , Segmentierung , Servoeinrichtung , Simulationsmodell , Stabtragwerk , Teilsystem , Theorie-Experiment-Vergleich , Tragfläche (Aerodynamik) , Übergangsantwort , Zeitbereichanalyse , Zustandsraum
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