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Alexander Lippisch, German pilot and engineer (born 1894)
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Alexander Lippisch
German aeronautical engineer, a pioneer of aerodynamics
Alexander Martin Lippisch was a German aeronautical engineer, a pioneer of aerodynamics who made important contributions to the understanding of tailless aircraft, delta wings and the ground effect, and also worked in the U.S. Within the Opel-RAK program, he was the designer of…Source: Wikipedia (CC BY-SA)
February 11
Day of the year
February 11 is the 42nd day of the year in the Gregorian calendar; 323 days remain until the end of the year.Source: Wikipedia (CC BY-SA)