Jaray, Paul, b. Vienna, March 11, 1889, d. St. Gallen (Switzerland), Sept. 22, 1974, engineer. Moved to Germany soon after his studies in Vienna and Prague, where he worked as an aircraft designer in 1913/14 and planned the Zeppelin airships LZ 38 to LZ 126 1914-1923. In 1919 planned a wind tunnel for a zeppelin, for decades studied specific questions of this field of work, especially streamlined automobiles. Lived in Switzerland from 1923 until his death. also played a major role in the development of the bicycle in 1920s.