abstract:A folding propeller is a type of propeller where the propeller blades fold in when the propeller is not in use, and out when the propeller is in use. This type of propeller is often used on sailing yachts to reduce drag while under sail.
It's likeputting the top down on a convertible, only instead offoldingup your roof, we'refolding up our wings and we're transferring powerfroma propellertothe wheels fordrivingonthe ground.