How Helicopters Fly contains information about helicopter aerodynamics from the FAA's Rotorcraft Flying Handbook.
This book was produced as an example for the book iBooks Author: Publishing Your First Ebook. Readers of the book produce this book while learning to use iBooks Author software.
Although the information in this book is an accurate description of helicopter flight, if you have a real interest in this topic, please download the free FAA book on which it was based, Rotorcraft Flying Handbook (2000), FAA-H-8083-21. You’ll find it much more complete than this sample book.