🌐EnglishEnglishالعربية中文EntityQ5195975· pop 5· linked from 118 articlesCurtiss R-600Also known as R-600-1 Challengeraircraft engineWikidata factsImageCurtiss R-600.jpgvia Wikidata · CC0Available in 4 languagesالعربيةLithuanianTajikvia Wikidata sitelinks · CC0ConnectionsCurtissEntityUnited States Department of DefenseConceptCategories1920s aircraft piston enginesAircraft air-cooled radial piston enginesCurtiss aircraft enginesSix-cylinder engines