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Asen YordanoffAsen Hristov Yordanoff (1886-1967) was was born in Sofia, Bulgaria. He graduated from the Aviation School of Louis Bleriot in Ethen, France. He was an aviation constructor with a global recognition. He was the constructor of the first Bulgarian motor plane, which after the tests made on 15 August, 1915 was recognized as an invention. For the first time he introduced a third wing that stabilized the plane in case of a slope of 45 degrees. After 1921 in the USA he was a member of the construction teams of Lockheed, Douglas, Piper, Boeing, and McDonald. As a leading constructor he participated in the development and construction of the "Flying Fortress", the Boeing 17, Lockheed P38 Lightning, Hawk 81 of Curtis, B24 and B29. His masterpiece was acknowledged to be a plane called the Dakota, the Douglas DC-3. Those planes made the first transcontinental flights as well. By a decision of the U.S. Federal government, A. Yordanov organized completely the civil aviation of the USA land support with radio equipment, aid meteorology, theoretic and flight preparation of the pilots for diurnal and nocturnal piloting. He worked as an instructor and lecturer while preparing astronauts. A. Yordanov worked also on the safety of automobiles and invented a device now known as the air bag. He also invented snow removers, as well as the Jodaphone telephones wireless, with an answering function, with an amplifier and intercom functions. Yordanoff, Asen Yordanoff, Asen Yordanoff, Asen Yordanoff, Asen
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