Interest in the characterization of the aerodynamic drag performance of acoustic liners has increased in the past several years. This paper details experiments in NASA Langley's Grazing Flow Impedance Tube to quantify the relative drag of several conventional perforate-over-honeycomb liner configurations. For a fixed porosity, facesheet hole diameter and cavity depth are varied to study the effect of each. These configurations are selected to span the range of conventional liner geometries used in commercial aircraft engines. Detailed static pressure and acoustic measurements are made for grazing flows up to M=0.5 at 140 dB SPL for tones between 400 and 2800 Hz. These measurements are used to calculate a resistance factor (λ) for each configuration. Analysis shows a correlation between perforate hole size and the resistance factor but cavity depth seems to have little influence. Acoustic effects on liner drag are observed to be limited to the lower Mach numbers included in this investigation.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Acoustic Liner Drag: A Parametric Study of Conventional Configurations


    Beteiligte:

    Kongress:

    AIAA Aviation 2015 ; 2015 ; Dallas, TX, United States


    Erscheinungsdatum :

    2015-06-22


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Acoustic Liner Drag: A Parametric Study of Conventional Configurations

    Howerton, Brian M. / Jones, Michael G. | AIAA | 2015


    A Conventional Liner Acoustic/Drag Interaction Benchmark Database

    Howerton, Brian M. / Jones, Michael G. | NTRS | 2017


    A Conventional Liner Acoustic/Drag Interaction Benchmark Database

    Howerton, Brian M. / Jones, Michael G. | AIAA | 2017


    Acoustic Liner Drag Measurements

    Gustavsson, Jonas / Zhang, Yang / Cattafesta, Louis N. et al. | AIAA | 2019


    ACOUSTIC LINER DRAG MEASUREMENTS

    Gustavsson, Jonas / Zhang, Yang / Cattafesta, Louis N. et al. | British Library Conference Proceedings | 2019