Monumental engineering text offers comprehensive, detailed coverage of every aspect of theory and design: elements of vertical flight, forward flight, performance, mathematics of rotating systems, rotary wing dynamics and aerodynamics, aeroelasticity, stability and control, stall, noise and more. Essential reading for any student or aeronautical engineer interested in the design and development of vertical-flight aircraft. 189 illustrations. Bibliography. 1980 edition.Johnson, Wayne is the author of 'Helicopter Theory' with ISBN 9780486682303 and ISBN 0486682307.