- blade passage frequency
- см. blade passing frequency
Авиасловарь. М.А.Левин. 2004.
blade passage frequency
Смотреть что такое "blade passage frequency" в других словарях:
ГОСТ 31353.1-2007: Шум машин. Вентиляторы промышленные. Определение уровней звуковой мощности в лабораторных условиях. Часть 1. Общая характеристика методов — Терминология ГОСТ 31353.1 2007: Шум машин. Вентиляторы промышленные. Определение уровней звуковой мощности в лабораторных условиях. Часть 1. Общая характеристика методов оригинал документа: 3.1.7 вентилятор с воздуховодами (ducted fan):… … Словарь-справочник терминов нормативно-технической документации
лопаточная частота — 3.1.5 лопаточная частота (blade passage frequency, BPF), Гц: Частота прохождения лопаток колеса вентилятора мимо некоторой контрольной точки. Примечание Лопаточную частоту рассчитывают по формуле где х число лопаток; п частота вращения… … Словарь-справочник терминов нормативно-технической документации
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literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… … Universalium
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Wood — /wood/, n. 1. Grant, 1892 1942, U.S. painter. 2. Leonard, 1860 1927, U.S. military doctor and political administrator. * * * I Hard, fibrous material formed by the accumulation of secondary xylem produced by the vascular cambium. It is the… … Universalium
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