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Which of the following altitude is measured by the pitot-static tube?(a) Standard altitude(b) Constant altitude(c) Pressure altitude(d) Total altitudeI had been asked this question during a job interview.My doubt is from Air Data Equations topic in portion Air Data Systems, Altitude and Heading Reference of Avionics

Answer»

Correct answer is (c) PRESSURE altitude

To elaborate: Pressure altitude, as the name suggests, is the altitude derived from pressure MEASUREMENTS. It is measured from the static port of the pitot-static probe. The static pressure of AIR varies with altitude with APPROXIMATELY 101Kpa at SEA level.



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