| タイトル | Heavy rain effects on airplane performance |
| 本文（外部サイト） | http://hdl.handle.net/2060/19910002373 |
| 著者（英） | Dunham, R. E., Jr.; Mace, W. D., Jr.; Melson, W. E., Jr.; Bezos, G. M.; Campbell, B. A. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1990-07-01 |
| 言語 | eng |
| 内容記述 | 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. |
| NASA分類 | AIR TRANSPORTATION AND SAFETY |
| レポートNO | 91N11686 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/135514 |
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