You can help expand this article with text translated from the corresponding article in German. (January 2011) Click [show] for important translation instructions. View a machine-translated version of the German article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing German Wikipedia article at [[:de:Karl Arnstein]]; see its history for attribution. You may also add the template {{Translated|de|Karl Arnstein}} to the talk page. For more guidance, see Wikipedia:Translation.

Karl Arnstein (March 24, 1887, Prague – December 12, 1974, Bryan, Ohio) was one of the most important 20th century airship engineers and designers in Germany and the United States of America. He was born in Prague, Bohemia (now the Czech Republic) to Jewish parents. He developed stress analysis methods that have been incorporated into bridges, airships and airplane materials. Before his involvement in airships he was one of the main engineers in building the Swiss Langwieser Viaduct.

In World War I Arnstein worked on improvements to the design of the German Zeppelin airships; see Zeppelin. He was the chief designer of the U.S. Navy airships, USS Akron and USS Macon, and was employed by the Goodyear-Zeppelin Corporation in Akron Ohio.^[1][2] He also designed one of the largest airship sheds in the US for sheltering huge Zeppelins.

• Finding aid for the Karl Arnstein Papers
• Dale Topping, Eric Brothers, When Giants Roamed the Sky - Karl Arnstein and the Rise of Airships from Zeppelin to Goodyear University of Akron Press, 2000