Translations:AY Honors/Drones/Answer Key/84/en
Propellers: The purpose of the four quadcopter propellers, one attached to each motor, is to generate thrust and torque to keep the drone flying, and to maneuver it (up, down, left, right, rotate clockwise, rotate counterclockwise, forward, and backward). The upward thrust force generated by the propellers is usually measured in pounds or grams. To keep the drone flying at a hover, the upward thrust generated by the propellers must equal the weight of the drone. Typically, quadcopter propellers produce more thrust the faster they spin. The quadcopter drone has two different types of propellers and motors. One set is designed to spin clockwise (4 and 1 in the diagram below), while the other is designed to spin counter clockwise (2 and 3 in the diagram).
