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Airplanes have little tubes called pitots ("pea- toes") that poke into the wind. The faster the airplane goes the more air pressure builds in the tube and is transmitted to instruments inside the airplane. There are altitude and temperature compensations applied to the raw data.
There are other ways to measure airspeed--GPS, Inertial, star-navigation, ground reference, radar, dopier....everything is used since airspeed is very important to know.
These days GPS plays an important part in positioning and judging the speed of aircraft.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoTwo different ways. Air speed and land speed. Land speed is more useful to the passengers. To measure air speed, a pitot tube is used. The faster the plane moves, the higher the air pressure inside the tube, and air speed is recorded on a guage in the cockpit.
Wiki User
∙ 14y agoi think you times distance, then divide it by time.... or you could use a ray gun. We just went over it today in school, but i wasnt really listening.
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