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...

In aerodynamics, the critical Mach number (Mcr or M*) of an aircraft is the lowest Mach number at which the airflow over some point of the aircraft reaches...

speed of sound, often stated as starting at speeds of Mach 5 and above. The precise Mach number at which a craft can be said to be flying at hypersonic...

Look up Mach or mach in Wiktionary, the free dictionary. Mach most commonly refers to Mach number, the speed of sound in local conditions. It may also...

ratio of the speed of a flow or object to that of sound is named the Mach number in his honour. As a philosopher of science, he was a major influence...

Mach 5 or variation, may refer to: Mach 5 (speed), a mach number representing the delimiting speed separating supersonic speed (below Mach 5) from hypersonic...

The drag-divergence Mach number (not to be confused with critical Mach number) is the Mach number at which the aerodynamic drag on an airfoil or airframe...

airspeed), but other measures of airspeed, such as indicated airspeed and Mach number give useful information about the capabilities and limitations of airplane...

Mach 1 can refer to: Mach number The speed of sound M.A.C.H. 1, a comic strip MACH-1 (Marvel Comics), a comic book superhero alter-ego of Abner Jenkins...

expressed by a Mach number, it is expressed relative to the local speed of sound, e.g. VMO: Maximum operating speed, MMO: Maximum operating Mach number. V1 is...

Mach 2 or variation, may refer to: Mach number for twice the speed of sound Supersonic speed of 2 times the speed of sound Ford Mach 2, a 1967 car; see...

\lambda } ≈ 8×10−8 m (80 nm). The Knudsen number can be related to the Mach number and the Reynolds number. Using the dynamic viscosity μ = 1 2 ρ c ¯...

compressible, flows are usually treated as being incompressible when the Mach number (the ratio of the speed of the flow to the speed of sound) is smaller...

Mach 4 or variant, may refer to: Mach number for four times the speed of sound Supersonic speed of 4 times the speed of sound MACH-4 (Marvel Comics), a...

In fluid dynamics, a Mach wave, also known as a weak discontinuity, is a pressure wave traveling with the speed of sound caused by a slight change of pressure...

but subsonic fixed-wing aircraft's stall speed is near the critical Mach number, at a given gross weight and G-force loading. In this region of flight...

object to the speed of sound (in the same medium) is called the object's Mach number. Objects moving at speeds greater than the speed of sound (Mach1) are...

physics, particularly in discussions of gravitation theories, Mach's principle (or Mach's conjecture) is the name given by Albert Einstein to an imprecise...

Mach 10 or variation, may refer to: Mach number for ten times the speed of sound Hypersonic speed of 10 times the speed of sound Mach 10 Training Systems...

assumption in the Prandtl–Glauert transformation is approximately constant Mach number throughout the flow, and the increasing slope in the transformation indicates...

K. R.; Jackson, Mary W. (September 1958), Effects of Nose Angle and Mach Number on Transition on Cones at Supersonic Speeds (NACA TN 4388), National...

over the bottom surface. When the aircraft speed reaches its critical Mach number the accelerated airflow locally reaches the speed of sound and creates...

Mach 7 or variation, may refer to: Mach number for seven times the speed of sound Hypersonic speed of 7 times the speed of sound Mach-VII (Marvel Comics)...

shocks.[clarification needed] The Mach number in the upstream is given by M 1 {\displaystyle {M_{1}}} and the mach number in the downstream is given by M...

quantity called Mach number. This is shown on a Machmeter as a decimal fraction. An aircraft flying at the speed of sound is flying at a Mach number of one, expressed...

computing. Mach is often considered one of the earliest examples of a microkernel. However, not all versions of Mach are microkernels. Mach's derivatives...

Mach 9 or variation, may refer to: Mach number for nine times the speed of sound Hypersonic speed of 9 times the speed of sound Wharfedale MACH 9, a loudspeaker...

critical Mach number, but transonic flow is seen at flight speeds close to the speed of sound (343 m/s at sea level), typically between Mach 0.8 and 1...

properties of the fluid (density, pressure, temperature, flow velocity, Mach number) change almost instantaneously. Measurements of the thickness of shock...

Mach-O, short for Mach object file format, is a file format for executables, object code, shared libraries, dynamically loaded code, and core dumps. It...