Folding propeller
A folding propeller is like a toy that folds up when you're not playing with it anymore. Just like how you can fold up your toys and put them away, a folding propeller can fold up and be put away when it's not needed.
On a boat or an airplane, a propeller helps move the vehicle through the water or air. But sometimes, when the vehicle is moving really fast, the propeller can get in the way and slow the vehicle down. This is where the folding propeller comes in.
A folding propeller can fold up so it doesn't stick out as much and doesn't slow down the vehicle too much. When the vehicle slows down or stops, the propeller can unfold and work just like a normal propeller again.
So basically, a folding propeller is a propeller that can fold up when it's not needed so it doesn't get in the way and slow down the vehicle.
On a boat or an airplane, a propeller helps move the vehicle through the water or air. But sometimes, when the vehicle is moving really fast, the propeller can get in the way and slow the vehicle down. This is where the folding propeller comes in.
A folding propeller can fold up so it doesn't stick out as much and doesn't slow down the vehicle too much. When the vehicle slows down or stops, the propeller can unfold and work just like a normal propeller again.
So basically, a folding propeller is a propeller that can fold up when it's not needed so it doesn't get in the way and slow down the vehicle.