The phenomenon of the tail buffet is usually associated with high-angle-of-attack operations of a twin-tail aircraft. The unsteady pressures that result from the tail buffet, along with the aeroelastic coupling of the vertical tail structural assembly, cause vibration of the empennage structural assembly. Such buffet-induced vibrations can shorten the fatigue life of the empennage structure and limit the flight envelope of the aircraft due to the large amplitudes of the fin vibrations. Methods of alleviating the tail buffet-induced vibrations, by the use of smart structure concepts, is presented. Theoretical and experimental investigations were conducted to estimate, and enhance the required control authority for tail buffet alleviation using piezoceramic-stack-based actuators. This was accomplished by designing an effective piezoelectric ceramic actuator assembly, developing procedures to place the sensors and actuators optimally on the vertical tail subassembly, designing controllers using acceleration feedback control concepts, and developing procedures to implement these controllers by using digital signal processor-based systems. The effectiveness of multimode controllers was validated by testing a full-scale laboratory subassembly under excitation provided by a shaker and wind-tunnel tests on a 1/16th-scale model with aeroelastically tailored vertical tail subassembly.


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    Titel :

    Tail buffet alleviation of high-performance twin-tail aircraft using piezostack actuators


    Weitere Titelangaben:

    Begrenzung der Flatterschwingungen eines Flugzeug-Doppelleitwerks mit gestapelten piezoelektrischen Aktoren


    Beteiligte:
    Hanagud, S. (Autor:in) / Bayon de Noyer, M. (Autor:in) / Luo, H. (Autor:in) / Henderson, D. (Autor:in) / Nagaraja, K.S. (Autor:in)

    Erschienen in:

    AIAA Journal ; 40 , 4 ; 619-627


    Erscheinungsdatum :

    2002


    Format / Umfang :

    9 Seiten, 13 Bilder, 35 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Tail Buffet Alleviation of High-Performance Twin-Tail Aircraft Using Piezostack Actuators

    S. Hanagud / M. Bayon de Noyer / H. Luo et al. | AIAA | 2002



    Tail Buffet Alleviation of High Performance Twin Tail Aircraft Using Piezo-Stack Actuators

    Hanagud, S. / Henderson, D. / Nagaraja, K. et al. | British Library Conference Proceedings | 1999


    Tail buffet alleviation of high performance twin tail aircraft using piezo-stack actuators

    Hanagud, S. / Bayon de Noyer, M. / Luo, H. et al. | AIAA | 1999


    VORTEX CONTROL FOR TAIL BUFFET ALLEVIATION ON A TWIN-TAIL FIGHTER CONFIGURATION

    Puram, C. K. / Rao, Dhanvada M. / Shah, Gautam H. | SAE Technical Papers | 1989