Drone exam · UAS general knowledge

A replacement propeller physically fits the motor and has the same diameter, but it is a different pitch and rotation type from the specified part. Why can that be a serious problem?

Answer

Propeller pitch, rotation direction, hub design, material, and approved pairing affect thrust and motor loading. Use the specified compatible part and install it in the correct position and orientation.

Explanation

A propeller is part of the propulsion design, not a generic spinning blade. A part that fits mechanically can still create the wrong thrust or load.