What Is a Glide Ratio?

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. What is a glide ratio?

The Big Idea

How far can a plane glide? There is a number that tells you. It is called the glide ratio.

Forward and Down

Step one: forward and down. A glide ratio compares how far an aircraft goes forward with how much height it loses. A ratio of twenty to one means it goes twenty feet forward for each foot it drops.

Different Ratios

Step two: different ratios. A paper plane has a modest ratio, an airliner has about seventeen to one, and a sailplane can have fifty to one or better. Long wings help a lot.

More Choices

Step three: more choices. A good glide ratio means the pilot has more time and choices. It is a safety advantage.

A Closer Look

Let's take a closer look! Measure how far forward. Measure how much it dropped. Divide the two. That is the glide ratio.

Quick Facts

Quick facts! A jet at cruising height could glide more than a hundred miles if its engines stopped. A paper plane has a modest ratio. Sailplanes can have ratios of fifty to one. A good ratio gives the pilot more time.

Think Like a Scientist

Now, think like a scientist! Throw a paper plane from a table three feet high. Measure how far it goes. Divide that distance by three. That is its glide ratio. Then explain what you learned to a friend.

Outro

A glide ratio compares how far a plane glides forward with how much height it loses, and a higher ratio means more time and choices. Science is amazing! Keep wondering and keep exploring! Next time you see this in real life, remember what you learned today and smile! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!