SynopsisCovering one of the most radical and highly developed helicopters ever produced, this volume describes the evolution and eventual failures of the AH-56A Cheyenne. Contains detailed accounts of structural breakup in wind tunnels, factory tech photos and cutaway views, propulsion and weapons system details, rigid rotor explanation, and more., Covering one of the most radical and highly developed helicopters ever, this work details the evolution and eventual failures of the aircraft.