The Mach number (M or Ma), often only Mach, (/mɑːk/; German: [max]) is a dimensionless quantity in fluid dynamics representing the ratio of flow velocity past a boundary to the local speed of sound .
| Число Маха |  |
Число́ Ма́ха — в механике сплошных сред — один из критериев подобия в механике жидкости и газа. Представляет собой отношение скорости течения в данной точке газового потока к местной скорости распространения звука в движущейся среде — назван по... Википедия
A mach number is a number that describes speed. It is a measure of the speed of an object compared to the speed of sound. Mach number is given as a percentage ... |
The Mach number (Ma) is a dynamic measure of fluid compressibility, and is defined as the ratio of flow velocity (v) to sound speed (a):(1)Ma=v/a. |
23 мая 2023 г. · Mach number is defined as the aircraft's speed compared with the speed of sound in air, i.e., 343 m/s. It is dependent on a variety of factors, ... |
Mach number, in fluid mechanics, ratio of the velocity of a fluid to the velocity of sound in that fluid, named after Ernst Mach (1838–1916), ... |
This page shows an interactive Java applet which calculates the speed of sound and the mach number for an input velocity and altitude. |
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