ELI5: Explain Like I'm 5

Calibrated airspeed

Calibrated airspeed is like a special way of measuring how fast an airplane is going through the air. It's like when you go on a car ride and your mom or dad looks at the speedometer to see how fast the car is going. But airplanes have a different way of measuring their speed because they're going so much faster and they're up in the sky where the air is different.

So, people who fly airplanes use something called an airspeed indicator to see how fast the airplane is going. The airspeed indicator has a bunch of different numbers and lines on it that tell you how fast the airplane is going. But it's not as simple as just looking at how fast the airplane is moving. That's because the air around the airplane can affect how fast it seems like it's going.

That's where calibrated airspeed comes in. It's like a special way of making sure the airspeed indicator is really measuring how fast the airplane is going, and not just how the air is affecting it. To get calibrated airspeed, people who fly airplanes have to do some calculations based on the temperature and pressure of the air around them.

Once they have the calibrated airspeed, they know that the airspeed indicator is showing them a really accurate picture of how fast the airplane is going. That's really important because airplanes have to fly at certain speeds to be safe and efficient, so they need to know exactly how fast they're going.