The Wright brothers, Wilbur and Orville, are often depicted as lone geniuses, secretly assembling the first successful powered aircraft far from civilization at Kitty Hawk on the Outer Banks of North Carolina. There is a germ of truth in the popular story, but only a germ. The brothers succeeded while so many other experimenters failed not because…

The flight of a quadcopter drone, readily available as a toy, is analyzed using simple physics concepts. A smartphone with built-in accelerometer and gyroscope was attached to the drone to register the accelerations and angular velocities along the three spatial axis while the drone is taking off, landing or rotating. The vertical speed, the…