To investigate the effect of control-surface freeplay, an aeroelastic wind-tunnel model of a T-tail with freeplay in the control chain was developed. The T-tail rig presents a conventional vertical fin represented only by its main structural component: the main spar. No aerodynamic sectors have been used to reproduce the aerodynamic contribution of a horizontal tail. This was chosen because of the limited size of the wind-tunnel chamber. Two numerical models were developed. The first one describes the dynamics of the tail by a state-space system with nonlinearity represented as a lumped element in the actuator feedback loop, and the second is described by the high-order harmonic balance approach, where the response of the nonlinear system is approximated with a periodic signal. The two approaches are then validated against experimental measurements collected during wind-tunnel testing. The results of this validation process as well the numerical and experimental approaches adopted are reported in this paper.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Freeplay-Induced Limit-Cycle Oscillations in a T-Tail: Numerical vs Experimental Validation


    Beteiligte:

    Erschienen in:

    Journal of Aircraft ; 52 , 2 ; 486-495


    Erscheinungsdatum :

    01.03.2015




    Medientyp :

    Aufsatz (Konferenz) , Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





    Experimental Studies on Freeplay Induced Limit Cycle Oscillations and Their Major Drivers

    Fonzi, Nicola / Ricci, Sergio / Livne, Eli | AIAA | 2025

    Freier Zugriff

    New insights on limit cycle oscillations due to control surface freeplay

    Fonzi, Nicola / Ricci, Sergio / Livne, Eli | TIBKAT | 2023

    Freier Zugriff