The objective is to determine if the aerodynamic characteristics of an airplane are altered while flying in the rain. Wind-tunnel tests conducted at the NASA Langley Research Center (LaRC) have shown losses in maximum lift, reduction in stall angle, and increases in drag when a wing is placed in a simulated rain spray. For these tests the water spray concentration used represented a very heavy rainfall. A lack of definition of the scaling laws for aerodynamic testing in a two-phase, two-component flow makes interpolation of the wind-tunnel test uncertain. Tests of a large-scale wing are to be conducted at the LaRC. The large-scale wing is mounted on top of the Aircraft Landing Dynamics Facility (ALDF) carriage. This carriage (which is 70-foot long, 30-foot wide, and 30-foot high) is propelled with the wing model attached down a 3000-foot long test track by a water jet at speeds of up to 170 knots. A simulated rain spray system has been installed along 500 feet of the test track and can simulate rain falls from 2 to 40 inches/hour. Operational checks are underway and the initial tests should be completed by the Fall of 1989.


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    Titel :

    Heavy Rain Effects on Airplane Performance


    Beteiligte:
    R. E. Dunham (Autor:in) / G. M. Bezos (Autor:in) / B. A. Campbell (Autor:in) / W. D. Mace (Autor:in) / W. E. Melson (Autor:in)

    Erscheinungsdatum :

    1990


    Format / Umfang :

    17 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Heavy rain effects on airplane performance

    Dunham, R. E., Jr. / Bezos, G. M. / Campbell, B. A. et al. | NTRS | 1990


    Heavy rain influence on airplane accidents

    LUERS, J. / HAINES, P. | AIAA | 1983


    Heavy rain influence on airplane accidents

    Luers, J. / Haines, P. | NTRS | 1983