Two optical systems capable of measuring model attitude and deformation were compared to inertial devices employed to acquire wind tunnel model angle of attack measurements during the sting mounted full span 30% geometric scale flexible configuration of the Northrop Grumman Unmanned Combat Air Vehicle (UCAV) installed in the NASA Langley Transonic Dynamics Tunnel (TDT). The overall purpose of the test at TDT was to evaluate smart materials and structures adaptive wing technology. The optical techniques that were compared to inertial devices employed to measure angle of attack for this test were: (1) an Optotrak (registered) system, an optical system consisting of two sensors, each containing a pair of orthogonally oriented linear arrays to compute spatial positions of a set of active markers; and (2) Video Model Deformation (VMD) system, providing a single view of passive targets using a constrained photogrammetric solution whose primary function was to measure wing and control surface deformations. The Optotrak system was installed for this test for the first time at TDT in order to assess the usefulness of the system for future static and dynamic deformation measurements.


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    Titel :

    Comparison of Angle of Attack Measurements for Wind Tunnel Testing


    Beteiligte:

    Kongress:

    Aerospace Sciences ; 2001 ; Reno, NV, United States


    Erscheinungsdatum :

    2001-01-01


    Medientyp :

    Preprint


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :



    AIAA 2001-0559 COMPARISON OF ANGLE OF ATTACK MEASUREMENTS FOR WIND TUNNEL TESTING

    Jones, T. / Hoppe, J. / AIAA | British Library Conference Proceedings | 2001



    Wind Tunnel Model Angle of Attack Measurements using an Optical Model Attitude System

    Owen, F. K. / McDevitt, T. K. / Morgan, D. G. et al. | British Library Conference Proceedings | 2000


    Wind tunnel model angle of attack measurements using an optical model attitude system

    Owen, F. / McDevitt, T. / Morgan, D. et al. | AIAA | 2000