ELI5: Explain Like I'm 5

Drop tank

Hey there, kiddo! Do you know that sometimes planes need to fly very far and they need to carry extra fuel with them? But carrying lots of fuel means carrying extra weight, which makes the plane go slower and harder to fly. So, to solve this problem, they use something called a “drop tank”!

A drop tank is an extra fuel tank that can be attached to the outside of the plane. It's called a "drop" tank because when the plane doesn't need it anymore, it can be dropped off and left behind. This makes the plane lighter and easier to fly again.

Drop tanks are specially designed to be aerodynamic and can hold a lot of fuel. They can be attached to different parts of the plane, depending on the type of plane being used. Some planes can even carry multiple drop tanks, which means they can fly even further without having to stop and refuel.

So, next time you see a plane with a big tank hanging from it, just know that it's a drop tank, and it's helping the plane fly further and faster!