Climatic and Environmental Criteria for Aircraft Design, Edição 2

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U.S. Government Printing Office, 1952 - 65 páginas
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Página 34 - Direction of wind shown by smoke drift, but not by wind vanes...
Página 55 - insect" means any of the numerous small invertebrate animals generally having the body more or less obviously segmented, for the most part belonging to the class insecta, comprising six-legged, usually winged forms, as, for example, beetles, bugs, bees, flies, and to other allied classes of arthropods whose members are wingless and usually have more than six legs, as, for example, spiders, mites, ticks,, centipedes, and wood lice. i. The term "fungi...
Página 34 - Raises dust and loose paper ; small branches are moved. 5 Fresh breeze Small trees in leaf begin to sway; crested wavelets form on inland waters.
Página 9 - Humidity, Relative: The ratio of the actual partial pressure of the water vapor in a space to the saturation pressure of pure water at the same temperature.
Página 34 - Shift of the Wind. — The average direction of the wind changes slightly during the day, both over plains and on mountain tops, the tendency being for it always to follow the sun, or, rather, the most heated section of the earth. That is, the wind tends to be east during the forenoon, south (in the northern hemisphere) during the early afternoon, and west during the late afternoon and early evening. This does not mean that at each instant the wind really blows directly from the then warmest region,...
Página 9 - The mass of water vapor in a unit of moist air, usually expressed as so many grams per gram or per kilogram of moist air.
Página 21 - A light, feathery deposit of ice caused by the condensation of water vapor, directly in the crystalline form, on terrestrial objects whose temperatures are below freezing...
Página 34 - ... 6 Strong breeze Large branches in motion ; whistling heard in telegraph wires ; umbrellas used with difficulty...
Página 12 - Dew is water condensed onto objects near the ground whose temperatures have fallen below the dew point of the adjacent air due to radiational cooling during the night, but are still above freezing (ref.
Página 34 - Large branches in motion ; whistling heard in telegraph wires ; umbrellas used with difficulty 25-31 7 High wind Whole trees in motion; inconvenience felt in walking against wind 32-38 ( 8 Gale Breaks twigs off trees ; generally impedes progress...

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