Want to learn why ducted propellers improve both thrust and efficiency? Well, we’ve got both the lesson and the teacher for you. [Bruce Simpson] isn’t exactly a household name, but we bet most ...

The ball drone seems well suited to an indoor environment, but we’re not sure if it has any real advantages over a quadcopter with ducted propellers. Servos are cheaper than motors and ESCs ...

Trek has been based in Folsom since 2009. Its specialty is ducted-propeller technology. Ducted propellers can be more than 80% more efficient that non-ducted propellers, Bulaga said. The company ...