Mach number


Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to Mach number: Drag divergence Mach number

Mach number

also mach number  (mäk)
n. Abbr. M
The ratio of the speed of an object to the speed of sound in the surrounding medium. For example, an aircraft moving twice as fast as the speed of sound is said to be traveling at Mach 2.

[After Ernst Mach.]

Mach number

n
(Units) (often not capital) the ratio of the speed of a body in a particular medium to the speed of sound in that medium. Mach number 1 corresponds to the speed of sound. Often shortened to: Mach
[C19: named after Ernst Mach]

mach

or Mach

(mɑk)

n.
a number indicating the ratio of the speed of an object to the speed of sound in the medium through which the object is moving. Abbr.: M
[after E. Mach]

Mach

(mɑk, mɑx)

n.
Ernst, 1838–1916, Austrian physicist.

mach.

1. machine.
2. machinery.
3. machinist.

Mach number

(mäk)
The ratio of the speed of a body to the speed of sound in a particular medium. For example, an aircraft flying through air at twice the speed of sound has a Mach number of 2.

mach number

The ratio of the velocity of a body to that of sound in the surrounding medium.

mach number

A unit of velocity. Mach 1 is the speed of sound; Mach 5 is described as hypersonic.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.mach number - the ratio of the speed of a moving body to the speed of soundMach number - the ratio of the speed of a moving body to the speed of sound
ratio - the relative magnitudes of two quantities (usually expressed as a quotient)
Translations
Machovo číslo
References in periodicals archive ?
When the relaxation time was short, the flow behaved as supersonic if the Mach number of the equilibrium sound speed was larger than unity, even though the flow was subsonic based on the governing equations.
5 shows the history of Mach number curves corresponding to x and the original solution y.
It calculates flight parameters including altitude, air speed,static pressure, mach number, and true angle of attack.
For Axial measurement of Mach number, chamber like design was considered at the exit of the nozzle where the exit diameter of chamber considered was greater then 2 times the nozzle diameter and the length was 300mm.
To distinguish between compressible and incompressible flow in gases, the Mach number (the ratio of the speed of the flow to the speed of sound) must be greater than about 0.
In recognition of his work, the Mach number (the ratio between the speed of an object and the speed of sound) is named in his honor.
5[degrees] back swept angles, and adopts CFX (a general purpose Computational Fluid Dynamics software) to simulate every impeller, compares and analyzes the results of flow field on different back swept angles through considering pressure ratio, isentropic efficiency, volume flow rate and Mach number.
Interestingly, the book has a tabulation of flight times at each Mach number obtained.
B], the magnetic Mach number and [beta], the shock strength on the jump functions profiles across the shock wave on the bounded infinitesimal interval (1,1 + [epsilon]), [epsilon] being the fixed infinitesimal value, is analyzed.
While gravity is (technically speaking) not a force but an acceleration, a Shadow 200 with that type of acceleration would reach a Mach number of 457 two seconds after launch.
They would be starting the engine at a lower Mach number and then accelerate the airplane to Mach 6 or Mach 7.