Mach

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Related to Mach numbers: Mach speed

Mach

also mach  (mäk)
n.
Mach number.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

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.
Farlex Trivia Dictionary. © 2012 Farlex, Inc. All rights reserved.
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)
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

Mach

[mæk] Nmach m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

Mach

[ˈmɑːk] nMach m
Collins English/French Electronic Resource. © HarperCollins Publishers 2005

Mach

nMach nt; Mach numberMachzahl f; the jet was approaching Mach 2das Flugzeug näherte sich (einer Geschwindigkeit von) 2 Mach
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

Mach

[mæk] n (Aer) (also Mach number) → (numero di) mach m inv
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
As the twist rate and stability of the long, heavy 225-grain projectile increases, its drag coefficient function gets lower, particularly in the transonic Mach numbers --below 1,200 fps.
Numerical modeling of flow control in a boundary-layer-ingesting offset inlet diffuser at transonic mach numbers, 44th AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada.
A Kriging surrogate model was proposed to model the unsteady aerodynamic forces with respect to a range of Mach numbers [18].
Figure 3c) shows the [c.sub.z] of two NACA 0012 airfoils crossing over time traveling at an angle of attack for 7[degrees], separated by 2.33 ft (S/c = 6.21), while comparing Mach numbers of 0.47 and 0.90.
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.
According to the instability criterion (30), the occurrence of KH instability of higher MHD modes would require lower threshold Alfven Mach numbers (and accordingly lower critical jet speeds) than those of the kink (m = [+ or -]1) mode.
To sum up, the linear aerodynamic theory shows similar results for various Mach numbers, whereas, with the nonlinear aerodynamic theory, a larger Mach number produces a lower panel positive deflection peak.
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.
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.
Because hypersonic flow is far more complex than low speed flow (low Mach numbers flow and incompressible flow), the prediction of hypersonic boundary layer transition has become more difficult, which makes the transition mechanism of hypersonic boundary layer unclear.