Aviation History Magazine
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"From its unusual title to the final page, this is a fascinating history of the development of the helicopter and its use in peace and war. Not only does Chiles review the efforts of such early pioneers of vertical flight as George Cayley, the Breguet brothers, Paul Cornu and Emile Berliner, he has dug deeply into the backgrounds of several dozen other relatively unknown "helicoptrians" who risked their fortunes, reputations and often their lives ... But what makes The God Machine an exceptional book is its many revelations about the designers who labored so long to counter the mystifying aerodynamic forces at work while trying to create and fly a vertical lift machine ..."
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