How do planes stay in the air? What is vertical take-off? How does a pilot control a hot-air balloon? Join the friendly Stickmen to find out how… • Jet engines soar • Helicopters hover • Solar-powered aircraft fly • Remote-control drones operate ...and much more. The Stickmen share facts and demonstrate functions alongside clear, cutaway illustrations and diagrams of mechanisms at work. Come close ads see right inside these airborne wonders!