ELI5: Explain Like I'm 5

Specific fuel consumption (thrust)

When you drive or ride in a car, you know that the car needs gasoline or diesel to move. Just like that, a plane needs fuel to fly through the air.

Specific fuel consumption is a way to measure how much fuel a plane needs to create a certain amount of thrust, which is what makes the plane move forward through the air.

It's like how much food you need to eat to have enough energy to run around and play. The plane needs fuel to give it the energy to go through the air fast and far.

The lower the specific fuel consumption of a plane, the less fuel it needs to create the same amount of thrust, which can make it more efficient and better for the environment. Just like how you don't want to eat too much junk food because it's not good for you, a plane doesn't want to use too much fuel because it's not good for the earth.