EntityQ7965948· pop 5· linked from 34 articlesWalter RegulusSign in to save1930s Czech piston aircraft engineConnectionsInternational Standard Book NumberEntityCzechoslovakiaEntityaircraftEntitymetric horsepowerEntityturbojetEntityturbopropEntityaircraft engineEntityradial engineEntitycompression ratioEntityengine displacementEntityvalvetrainEntitystrokeEntityaerospace manufacturerEntityBristol JupiterEntityboreEntityBristol PegasusEntityWP-5EntityBristol MercuryEntityArmstrong Siddeley MongooseEntityBMW IIIaEntityCategories1930s aircraft piston enginesAircraft air-cooled radial piston enginesWalter aircraft engines