This updated, second edition adds more reviews of modern four-winged aircraft belonging to convertiplanes, Medium Altitude Long Endurance UAVs, and solar planes. As in the first edition, different analytical, numerical, and experimental methods are discussed in detail.  The book presents new sections on unsteady aerodynamic characteristics of tandem wings and specifics of their aerodynamic loading for stress analysis and structural design. Also, dependencies between key geometric parameters and aerodynamic characteristics were updated with new studies that helped to understand the physics...