Mach

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Related to Mach numbers: Mach speed

Mach

also mach  (mäk)
n.
Mach number.

Mach

(mæk)
n
(Units) short for Mach number

Mach

(German max)
n
(Biography) Ernst (ɛrnst). 1838–1916, Austrian physicist and philosopher. He devised the system of speed measurement using the Mach number. He also founded logical positivism, asserting that the validity of a scientific law is proved only after empirical testing

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

- The scale measuring the speed of an object or fluid relative to the speed of sound is named for philosopher/physicist Ernst Mach (1838-1916), who researched thermodynamics; Mach is the ratio of the speed of something to the speed of sound in the surrounding medium.
See also related terms for measuring.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.mach - Austrian physicist and philosopher who introduced the Mach number and who founded logical positivism (1838-1916)Mach - Austrian physicist and philosopher who introduced the Mach number and who founded logical positivism (1838-1916)
Translations

Mach

[mæk] Nmach m

Mach

[ˈmɑːk] nMach m

Mach

nMach nt; Mach numberMachzahl f; the jet was approaching Mach 2das Flugzeug näherte sich (einer Geschwindigkeit von) 2 Mach

Mach

[mæk] n (Aer) (also Mach number) → (numero di) mach m inv
References in periodicals archive ?
Effects of compressibility are only important for high Mach numbers, which most modern rotors are designed to avoid.
This indicates that a supersonic jet with higher Mach numbers reduces ignition probability.
Fine-tuning the pylons--from head on, they look like the arm and hand of a pitcher throwing a fast ball--through extensive wind tunnel testing resulted in a lower drag configuration than fuselage-mounted engines, reduced shock wave strength at higher Mach numbers and generated good stall characteristics--although it still requires a stick pusher.
2 m blow down type Trisonic Wind Tunnel with ejector system in the range of Mach numbers 0.
The contraction ratio can decrease beyond the Kantrowitz limit for high flight Mach numbers because the shock structure is formed of oblique shocks, thereby generating less loss than would a normal shock assumed at the throat.
This method considerably reduced the first torsional mode frequencies, as shown in Table 5; however these wing models reached the flutter conditions for lower Mach numbers than expected.
The objective of the LDSD project is to see if the cutting-edge, rocket-powered test vehicle operates as it was designed-in near-space at high Mach numbers.
According to Norm Cotter, full-scale testing of the original J58 compressor revealed the lack of sufficient stall margin at the higher Mach numbers.
There are two convective Mach numbers that influence noise emission: one for primary instability with respect to the secondary stream and the other for secondary instability with respect to the ambient.
The electron concentration and collision frequency profile under different Mach numbers and incident angles will be discussed.
The Area-Mach relation was used to obtain both the inlet and the exit area ratios by suitably substituting the stagnation and exit Mach numbers.
The scramjet has a level of efficiency at high Mach numbers that is better than anything else we currently have.