The theory, methods, and applications of the videogrammetric model deformation (VMD) measurement technique used at NASA for wind tunnel testing are presented. The VMD technique, based on non-topographic photogrammetry, can determine static and dynamic aeroelastic deformation and attitude of a wind-tunnel model. Hardware of the system includes a video-rate CCD camera, a computer with an image acquisition frame grabber board, illumination lights, and retroreflective or painted targets on a wind tunnel model. Custom software includes routines for image acquisition, target-tracking/identification, target centroid calculation, camera calibration, and deformation calculations. Applications of the VMD technique at five large NASA wind tunnels are discussed.


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    Titel :

    Videogrammetric Model Deformation Measurement Technique


    Beteiligte:
    A. W. Burner (Autor:in) / T. S. Liu (Autor:in)

    Erscheinungsdatum :

    2001


    Format / Umfang :

    31 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch