Machmeter
Sign in to savethumb|right|Illustration showing the face of a Machmeter reading a Mach number of 0.83
Article
5 sectionsContents
- Use
- Operation
- Calibration
- See also
- References
thumb|right|Illustration showing the face of a Machmeter reading a Mach number of 0.83
A Machmeter is an aircraft pitot-static system flight instrument that shows the ratio of the true airspeed to the speed of sound, a dimensionless 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 as Mach 1.