Measuring Airspeed with Pressure Differences

A Pitot-static tube measures airspeed by comparing air pressure differences. It is widely used to find unknown speeds in airflow, including airplane airspeed.

The method relies on Bernoulli's principle, which links changes in pressure to changes in airflow speed. The tube senses stagnation pressu...

Unknown speeds in an airflow, for example, the air speed of an aircraft, are typically measured using a pitot-static tube. The pitot-static tube is based on Bernoulli's principle, where the increase in speed of a fluid is directly related to pressure variations.

The fluid itself exerts pressure on the surroundings, called static pressure. ...