Home›1930s aircraft piston engines›Hirth HM 504🌐EnglishEnglishDeutschFrançaisItalianoNederlandsSvenskaРусский日本語EntityQ3785791· pop 6· linked from 65 articlesHirth HM 5041930s German aircraft engineWikidata factsImageHirth HM 504 Aircraft engine at Flugausstellung Hermeskeil, pic1.jpgSources (1)wikidata.orgvia Wikidata · CC0Available in 5 languagesDeutschРусскийItalianoSvenskavia Wikidata sitelinks · CC0ConnectionsInternational Standard Book NumberEntitygas turbineEntityCategories1930s aircraft piston enginesAircraft air-cooled inline piston enginesHirth aircraft enginesInverted aircraft piston enginesStraight-four engines