Counter-rotating propellers

Okay kiddo, imagine you have a toy airplane. And imagine that instead of one big propeller, there are two smaller propellers. But here's the cool part- they spin in opposite directions! One goes clockwise, and the other goes counterclockwise.

Now, why would you want two propellers that spin in opposite directions? Well, it has some really cool benefits! When the propellers spin, they create something called "torque" - this is like a twisting force that wants to spin the airplane around. But when you have two propellers spinning in opposite directions, they create torque that cancels each other out. This means the plane won't spin out of control!

Another benefit of counter-rotating propellers is that they can create more thrust, which means the plane can go faster. When the propellers spin in opposite directions, they create a sort of "wind tunnel" in between them, which makes the air move faster and creates more thrust.

Overall, counter-rotating propellers are a really cool design that can help planes stay stable and go faster. Just like how having two wheels on a bike makes it more stable than one wheel, having two propellers that spin in opposite directions makes a plane more stable too!