Let's Fly: Helicopters

Let's Fly: Helicopters book cover
CHAPTER 1 To the Rescue 5 CHAPTER 2 Helicopter History 9 CHAPTER 3 Spinning Blades 15 HOW IT WORKS Tilting and Turning 20 CHAPTER 4 Modern Choppers 23 Focus on Helicopters 28 Glossary 30 To Learn More 31 Index 32 TABLE OF CONTENTS