EntityQ2303705· pop 10· linked from 55 articlesKotobukiSign in to saveR-9 piston aircraft engine family by NakajimaConnectionsKawasaki Ha40EntityInternational Standard Book NumberEntityGunma PrefectureEntitypropellerEntityprototypeEntityImperial Japanese NavyEntityrationalityEntityaircraft engineEntitycylinderEntityreciprocating engineEntityA5MEntityengine displacementEntityNakajima Ki-27Entityrotary engineEntityImperial Japanese Air ForceEntityNakajimaEntitystrokeEntityaerospace manufacturerEntityBristol JupiterEntityNakajima E8NEntityCategories1930s aircraft piston enginesAircraft air-cooled radial piston enginesAircraft engines without specificationsNakajima aircraft enginesNine-cylinder engines