Linked from

The 25 pages that link to Mach number, each with the reason it gives.

• Reynolds numberCompared with: It compares flow speed with acoustic propagation, highlighting compressibility rather than viscous effects.

• AerodynamicsRelated: Compressibility effects become decisive as this ratio approaches and exceeds one.

• Doppler effectRelated: Supersonic motion changes how sound wavefronts accumulate into a shock wave.

• Shock waveRelated: It indicates whether a moving source can outrun sound and generate a shock.

• Angle of attackCompared with: Compressibility effects can change lift behavior, but Mach number is not an orientation angle.

• AirfoilRelated: Compressibility changes airfoil pressure and drag as Mach number rises.

• Incompressible flowRelated: It helps assess whether compressibility effects can safely be neglected.

• Wind tunnelRelated: It determines whether compressibility effects must be reproduced in testing.

• Dimensionless quantityBroader topic: It compares speeds with like dimensions and organizes compressible-flow regimes.

• Compressible flowRelated: It indicates whether disturbances can travel upstream through the flow.

• Sound speedRelated: It uses sound speed as the reference for comparing flow and motion.

• Froude numberCompared with: It compares inertia with compressibility effects, while the Froude number compares inertia with gravity.

• SpeedRelated: It expresses speed relative to sound, especially in aerodynamics.

• Blast waveRelated: The shock front’s speed relative to sound indicates its strength and propagation regime.

• RamjetRelated: Ramjet inlet behavior and operating limits depend strongly on flight Mach number.

• StreamliningRelated: At high Mach numbers, compressibility changes the drag and useful body shapes.

• Supersonic flightRelated: It defines supersonic flight as Mach number greater than one.

• Lockheed SR-71 BlackbirdNarrower topic: The SR-71’s Mach 3 performance became a defining measure of its operational capability.

• KnotCompared with: Unlike a knot, it compares speed with a changing physical reference.

• Swept wingRelated: The benefits and penalties of sweep depend strongly on flight Mach number.

• Chuck YeagerRelated: It expresses the speed regime reached by Yeager’s aircraft.

• Kilometres per hourCompared with: It compares speed with sound rather than expressing distance per hour.

• Supersonic aircraftRelated: It expresses supersonic aircraft speed relative to changing atmospheric conditions.

• AeromechanicsRelated: It identifies compressibility regimes that change aerodynamic loads and vehicle behavior.

• Buckingham π theoremBroader topic: It organizes compressible-flow behavior into a dimensionless parameter.