The use of planar laser-induced fluorescence (PLIF) of nitric oxide (NO) was investigated for use in visualizing wake flowfields downstream of rapid prototyping models in a hypersonic wind tunnel. The re-entry models for use in this study were fabricated using a stereo-lithography apparatus. These models were produced in one day or less, which is a significant time savings compared with the manufacture of ceramic or metal models. The models were tested in the NASA Langley Research Center 31-Inch Mach 10 Air Tunnel. Pure NO was either seeded through tubes plumbed into the model or via a tube attached to the strut holding the model, which provided localized addition of NO into the model's wake through a porous metal cylinder attached to the end of the tube. Various entry capsule model types and configurations and NO-seeding methods were used, including a new streamwise visualization method based on PLIF. Virtual diagnostics interface technology, developed at NASA Langley Research Center, was used to visualize the datasets in post-processing. The use of calibration 'dotcards' was investigated to correct for camera perspective and lens distortions in the PLIF images.


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    Titel :

    Fluorescence imaging and streakline visualization of hypersonic flow over rapid prototype wind-tunnel models


    Weitere Titelangaben:

    Fluoreszenzabbildung und Stromlinienvisualisierung der hypersonischen Strömung über schnelle Prototyp-Windkanal-Modelle


    Beteiligte:
    Danehy, P.M. (Autor:in) / Alderfer, D.W. (Autor:in) / Inman, J.A. (Autor:in) / Berger, K.T. (Autor:in) / Buck, G.M. (Autor:in) / Schwartz, R.J. (Autor:in)


    Erscheinungsdatum :

    2008


    Format / Umfang :

    15 Seiten, 20 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch





    Fluorescence imaging and streakline visualization of hypersonic flow over rapid prototype wind-tunnel models

    Danehy, P M / Alderfer, D W / Inman, J A et al. | SAGE Publications | 2008


    Fluorescence Visualization of Hypersonic Flow Over Rapid Prototype Wind-Tunnel Models

    Alderfer, David / Danehy, Paul / Inman, Jennifer et al. | AIAA | 2007


    Fluorescence Visualization of Hypersonic Flow Over Rapid Prototype Wind-Tunnel Models AIAA Paper

    Alderfer, D. / Danehy, P. / Inman, J. et al. | British Library Conference Proceedings | 2007