Fuel bladder

A fuel bladder is like a big, stretchy balloon that can hold fuel inside of it. Think of it like a water balloon that you might play with on a hot day. Just like a water balloon can hold water, a fuel bladder can hold fuel.

But instead of playing with it, people use fuel bladders to transport fuel from one place to another. For example, if a big truck needs to travel a long distance, it might use a fuel bladder to carry extra fuel so it doesn't have to stop and refuel as often.

Fuel bladders are made out of special materials that are really strong and can hold up to the weight of the fuel without leaking or breaking. They are also designed to fit perfectly into the space where the fuel needs to go, like the back of a truck or airplane.

When it's time to use the fuel inside of the bladder, a special hose is attached to the valve on the bladder to pump the fuel out. This way, the fuel can be easily transferred to the vehicle that needs it without making a big mess or wasting any fuel.