At the dawn of the supersonic jet age, aircraft designers were forced to devise radically new high-speed planforms to harness the powerful new jet engine. One of the most successful was the delta wing. While in America Convair largely had the delta wing to itself, Fairey and Avro were its champions in Britain. The Fairey Delta 2 broke the World Air Speed Record in spectacular fashion, and Avro's 707 research aircraft led to the famous Vulcan, proving the delta wing could be adopted for a highly successful subsonic bomber. This book examines transatlantic delta-wing development, and how experimental aircraft proved the delta's potential and versatility. It covers the Fairey Delta 1 and Delta 2, the proposed Delta Rocket Fighter and huge Delta 3 long-range interceptor, and the Avro 707. On the American side, it examines the Convair XF-92 and XF-92A, the F-102/F-106 family development and the Convair Sea Dart - the world's only supersonic seaplane. Throughout the last century, one-off experimental aircraft and cutting-edge military prototypes have pushed the boundaries of what is possible. Authoritative and accessible, X-Planes is the series that explains the technology behind the world's most important prototype and research aircraft, their often dangerous flight-test careers, and how their successes and failures influenced frontline aircraft development. Each Book Contains: The best archive photography, Meticulously detailed original artwork, Expert history and analysis Book jacket.