Why Do Gliders Fly with No Engine?

What Crafty Clover says in this video

Intro

Hey there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why do gliders fly with no engine?

The Big Idea

A glider is a plane with no engine. It trades height for forward speed, then finds rising air to climb again. Long wings ride rising air, the way a hawk does! Record gliders have stayed up for hours and flown hundreds of miles using only sun warmed air.

Step 1

Step one: a tow or a push. A glider needs help at the start. A tow plane or a winch pulls it up to gain its first bit of height. The pilot keeps the nose slightly down so the glider keeps its speed.

Step 2

Step two: nose slightly down, and the wings make lift. The glider points its nose slightly down, and gravity pulls it forward. Fast air over the long, thin wings holds it up. Thermals are the hidden elevators of the sky.

Step 3

Step three: find a thermal, then climb. A thermal is a column of rising warm air. The pilot circles inside it to gain height, then glides on to the next rise. Then it slides forward, ready to look for another rise.

A Closer Look

Let's take a closer look at a glider! The long, thin wings make lots of lift and little drag. The fuselage is the body, the tail keeps it steady, and the pilot sits in the cockpit. And the thermal is rising warm air that lifts the whole plane. Long wings, rising air, no engine! Every part of a glider helps it stay light and slippery in the air.

Quick Facts

Quick facts! The Wright brothers flew gliders before they built powered planes. A good glider can go 40 meters forward for every 1 meter down. Birds taught us about thermals. And never launch a real glider without a trained grown-up. Albatrosses, hang gliders, and paper airplanes use the same glide idea.

Think Like a Scientist

Now, think like a scientist! First, fold two paper planes. Give one of them longer wings. Now launch both gently from a chair. Try it three times, and compare which one glides farther. Look at how the wing length changes things.

Outro

Gliders trade height for speed and ride rising air. That's flying with no engine! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!