This excellent book covers Helicopters in Use Today, Principles of Flight, Documentation, Publications and Historical Records, Helicopter Fundamentals, The Main Rotor System, Mast and Flight Controls, Main Rotor Transmissions, Powerplants, Tail Rotors, Airframes and Special Purpose Equipment. Written in concise, simple language and packed with photographs and illustrations.

Synopsis
Helicopter aerodynamics, common flight techniques, normal field operations, and precautionary measures and critical conditions are discussed. This is U.S. Army handbook FM 1-51.