Quadcopters tend to have very poor efficency because of their high disk loading. High disk loading– that is, how much weight each square meter of area swept by the propellers must carry–is almost ...

Airplane propellers are primarily categorized into fixed-pitch, offering a performance compromise, and variable-pitch types (e.g., constant-speed, ground-adjustable, controllable-pitch) that allow for ...

The second part of the series (click HERE to read more) covered Hamilton Standard’s invention of the first practical controllable-pitch propeller and its impact on the aviation industry. The invention ...