Results of analyzing flight-test data of pressure-fluctuation fields in front of forward-facing steps and behind backward-facing steps are presented. The range of dimensionless step heights (normalized by boundary-layer displacement thickness) in the flight test was 0.042-0.236. The flight tests covered a mach-number range from 0.57 to 1.97. In the mach-number ranges covered by wind-tunnel tests (0.57 to 0.78 and 1.5 to 2) data agree very well with the flight data. Very importantly, the flight-test data fill in the gap previously existing for small-step pressure-fluctuations in the range of mach 0.78 to 1.5. Increased pressure-fluctuations were observed in the transonic region.


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    Titel :

    Influence of Small Steps on Wall Pressure Fluctuation Spectra Measured on Tu-144LL Flying Laboratory


    Beteiligte:
    B. M. Efimtsov (Autor:in) / A. Y. Golubev (Autor:in) / S. A. Rizzu (Autor:in) / A. O. Andersson (Autor:in) / R. G. Rackl (Autor:in)

    Erscheinungsdatum :

    2002


    Format / Umfang :

    9 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch





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    Efimtsov, B. / Kozlov, N. / Kravchenko, S. et al. | AIAA | 1999


    Wall pressure-fluctuation spectra at small backward-facing steps

    Efimtsov, B. / Kozlov, N. / Kravchenko, S. et al. | AIAA | 2000



    Flight Test Measurements From The Tu- 144LL Structure/Cabin Noise Experiment

    S. A. Rizzi / R. G. Rackl / E. V. Andrianov | NTIS | 2000