Corrected speed

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Corrected speed is the speed a component would rotate at if the inlet temperature corresponded to ambient conditions at sea level, on a standard day (i.e. 288.15 K).

Corrected speed can be calculated as follows:

Corrected speed is often abbreviated to or (for referred speed).

So-called non-dimensional speed is proportional to corrected speed:


  • – stagnation (or total) temperature (in kelvins),
  • – real shaft speed,
  • – referred temperature.

In relative form, corrected speed, referred speed and non-dimensional speed are all measures of peripheral Mach number.

See also[edit]