Sperry , along with his assistant Emil Cachin , made three passes in front of a grandstand full of spectators and military observers .
Sperry 's aircraft , a Curtiss C - 2 , was the only one equipped with a gyroscopic stabilizer .
Sperry , along with Sperry 's assistant Emil Cachin , made three passes in front of a grandstand full of spectators and military observers .
Sperry 's aircraft , a Curtiss C - 2 , was the only one equipped with a gyroscopic stabilizer .