Leishman Helicopter Aerodynamics
Hennie Jaffe
J. Gordon Leishman is the Minta Martin Chair of Engineering and Professor of Aerospace Engineering at the University of Maryland, College Park. He is a former aerodynamicist at Westland Helicopters and has written extensively on topics in helicopter aerodynamics. Leishman is a Fellow of the Royal Aeronautical Society, an Associate Fellow of the American Institute of Aeronautics and Astronautics, and a Technical Fellow of the American Helicopter Society. He is Editor-in-Chief for the Journal of the American Helicopter Society. He is also the author of The Helicopter: Thinking Forward, Looking Back (2007).
This second edition benefits from additional discussion of the NOTAR system and strakes, as well as frequently misunderstood principles of airspeed and high altitude operations. The book also concludes with a multiple-choice practice examination; used in conjunction with quizzes for each chapter, the reader can test their grasp of helicopter aerodynamics.
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Helicopters are highly capable and useful rotating-wing aircraft that have a variety of civilian and military applications. Their usefulness lies in their unique ability to take off and land vertically, to hover stationary relative to the ground, and to fly forward, backward, or sideways. These unique flying qualities, however, come at a price, including complex aerodynamic problems, significant vibrations, high levels of noise, and relatively large power requirements compared to a fixed-wing aircraft. This book provides a thorough, modern treatment of the aerodynamic principles of helicopters and other rotating-wing vertical lift aircraft. The first part of the text begins with a unique technical history of helicopter flight and then covers basic methods of rotor aerodynamic analysis and issues associated with helicopter performance and design. The second part is devoted to more advanced topics in helicopter aerodynamics, including airfoil flows, unsteady aerodynamics, dynamic stall, and rotor wakes.
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