Mach nummer

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An F/A-18 Hornet creatin a vapor cone at transonic speed just afore reachin the speed o soond

In fluid dynamics, the Mach nummer (M or Ma) (German: [maχ]) is a dimensionless quantity representin the ratio o flow velocity past a boondary tae the local speed o soond.[1][2]

References[eedit | eedit soorce]

  1. Young, Donald F.; Bruce R. Munson; Theodore H. Okiishi; Wade W. Huebsch (2010). A Brief Introduction to Fluid Mechanics (5 ed.). John Wiley & Sons. p. 95. ISBN 978-0-470-59679-1. 
  2. Graebel, W.P. (2001). Engineering Fluid Mechanics. Taylor & Francis. p. 16. ISBN 978-1-56032-733-2.