🌐EnglishEnglishDeutschEspañolFrançaisTiếng Việtفارسی中文日本語EntityQ3012851· pop 11· linked from 100 articlesKellett XR-8Also known as XR-8, Kellett XH-8, XH-8experimental helicopter with intermeshing rotorsWikidata factsImageKellett XR-8.JPGSources (2)wikidata.orgde.wikipedia.orgvia Wikidata · CC0Available in 10 languagesEspañolFrançaisDeutsch中文CzechSlovenianTajikTiếng Việtفارسیvia Wikidata sitelinks · CC0ConnectionsWorld War IIConcepthelicopterEntityCategories1940s United States experimental aircraft1940s United States helicoptersAircraft first flown in 1944Kellett aircraftSingle-engined piston helicoptersSynchroptersUnited States military helicopters