Flying in Any Direction Page 21 part 1

A helicopter can fly in any direction 
straight up down forward backward 

sideways and it can even stand still in mid-air. Furthermore the helicopter can creep along a few inches above the ground or water or it can climb thousand of feet into the sky and travel at over 100 miles per hour. The fifteenth-century genius Leonardo da Vinci not only designed a workable parachute and the ornither but he also designed a very special flying machine.