Flight experiments on NASA Langley's B737-100 (TSRV) airplane have been conducted to document flow characteristics in order to further the understanding of high-lift flow physics, and to correlate and validate computational predictions and wind-tunnel measurements. The project is a cooperative effort involving NASA, industry, and universities. In addition to focusing on in-flight measurements, the project includes extensive application of various computational techniques, and correlation of flight data with computational results and wind-tunnel measurements. Results obtained in the most recent phase of flight experiments are analyzed and presented in this paper. In-flight measurements include surface pressure distributions, measured using flush pressure taps and pressure belts on the slats, main element, and flap elements; surface shear stresses, measured using Preston tubes; off-surface velocity distributions, measured using shear-layer rakes; aeroelastic deformations of the flap elements, measured using an optical positioning system; and boundary-layer transition phenomena, measured using hot-film anemometers and an infrared imaging system. The analysis in this paper primarily focuses on changes in the boundary-layer state that occurred on the slats, main element, and fore flap as a result of changes in flap setting and/or flight condition. Following a detailed description of the experiment, the boundary-layer state phenomenon will be discussed based on data measured during these recent flight experiments.


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    Title :

    Analysis of in-flight boundary-layer state measurements on a subsonic transport wing in high-lift configuration


    Contributors:
    vanDam, C. P. (author) / Los, S. M. (author) / Miley, S. J. (author) / Yip, L. P. (author) / Banks, D. W. (author) / Roback, V. E. (author) / Bertelrud, A. (author)

    Conference:

    1st AIAA Aircraft Engineering, Technology, and Operations Congress ; 1995 ; Los Angeles, CA, United States


    Publication date :

    1995-09-21


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :