Most cases of global active noise reduction in commuter turboprop aircraft cabins have been attempted at low frequencies. The case of noise reduction applications for a smaller piston engine aircraft has been studied less, although they are noisier than turboprops with levels of up to 100 dBA. Specifically, the case of a six-seat, two-engine aircraft is studied here for an active noise control application. The main frequencies for noise reduction have been found at BFP (75 Hz) and some harmonics, 225 and 375 Hz (according to A-weighted noise levels). Computer model analysis of the cabin shows that only the peak at 75 Hz could be globally controlled, so the local control strategy is selected for application. Zones of attenuation around the head of a hypothetical passenger and attenuation at their ear, applying local control strategy, are obtained for different configurations in laboratory and eventually tested under flight conditions.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Local active noise attenuation in a small piston engine aircraft cabin


    Additional title:

    Lokale aktive Schalldämpfung in kleinen Flugzeugen mit Kolbenmotor


    Contributors:
    Romeu, J. (author) / Pamies, T. (author) / Genesca, M. (author) / Cardona, J. (author)

    Published in:

    Publication date :

    2007


    Size :

    10 Seiten, 27 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Active control of aircraft cabin noise

    Dimino, Ignazio ;Aliabadi, Ferri ;Aliabadi, Mohammad H. | SLUB | 2015


    Active control of aircraft cabin noise

    Dimino, Ignazio | TIBKAT | 2015


    Active Control of Aircraft Cabin Noise

    Zimcik, D. G. / North Atlantic Treaty Organization | British Library Conference Proceedings | 2004


    Active Noise Control in an Aircraft Cabin

    Gerner, C. / Sachau, D. / Breitbach, H. et al. | British Library Conference Proceedings | 2004


    Aircraft cabin noise reduction through active vibration control

    Swanson, Douglas / Billoud, Guy | AIAA | 1999