A flight test investigation was conducted to evaluate an infrared (IR) imaging technique to visualize off-surface flow phenomena. A single-engine, general-aviation airplane was equipped with an IR imaging system that viewed the region around the left wingtip. Vortical flow at the wingtip was seeded with sulfur hexafluoride, a gas with strong infrared absorbing and emitting characteristics. Different terrain and sky backgrounds were evaluated for their effect on IR images of vortical flow. The best IR images were obtained with a clear sky background. The results of the investigation indicate that IR flow visualization compliments existing smoke generator methods for off-surface flow visualization.


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    Title :

    In-Flight Off-Surface Flow Visualization Using Infrared Imaging


    Additional title:

    Sae Technical Papers



    Conference:

    General, Corporate & Regional Aviation Meeting & Exposition ; 1991



    Publication date :

    1991-04-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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