Bernoulli’s equation, which was named for Daniel Bernoulli, relates the pressure in a gas to the local velocity; so as the velocity changes around the object, the pressure changes as well.

What’s the problem?

Bernoulli’s equation is used on aircraft to provide a speedometer called a pitot-static tube. A pressure is quite easy to measure with a mechanical device. In a pitot-static tube, we measure the static and total pressure and can then use Bernoulli’s equation to compute the velocity.

  • Ask – How fast is this airplane going? It is moving through the air at some speed. The air itself can be moving too. Pilots talk about headwinds and

Do It
Challenges for you to work on…

Learn more…

  • Bernoulli and Newton – very complex explanation of the usual over-simplification of the description of the forces of aerodynamic lift