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machnumber

Compute Mach number using velocity and speed of sound

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Syntax

mach = machnumber(velocities,speed_of_sound)

Description

example

mach= machnumber(velocities,speed_of_sound)computes Mach numbers,mach, from anm-by-3 array of Cartesian velocity vectors,velocities, and an array ofmspeeds of sound,speed_of_sound.

Examples

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Determine the Mach number for velocity and speed of sound in feet per second:

mach = machnumber([84.3905 33.7562 10.1269], 1116.4505)
mach = 0.0819

Determine the Mach number for velocity and speed of sound in meters per second:

mach = machnumber([25.7222 10.2889 3.0867], [340.2941 295.0696])
mach = 0.0819 0.0945

Determine the Mach number for velocity and speed of sound in knots:

mach = machnumber([50 20 6; 5 0.5 2], [661.4789 573.5694])
mach = 0.0819 0.0094

Input Arguments

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Cartesian velocity vectors, specified as anm-by-3 array.velocitiesandspeed_of_soundmust have the same length.

Data Types:double

Speed of sound, specified as an array ofmspeeds of sound.velocitiesandspeed_of_soundmust have the same length.

Data Types:double

Output Arguments

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Mach numbers, returned as a scalar or array ofmMach numbers.

Version History

Introduced in R2006b

See Also

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