Rolls-Royce Griffon V12 piston engine

GPTKB entity

Predicate	Object
gptkbp:instanceOf	gptkb:piston_engine
gptkbp:bore	6.0 in (152 mm)
gptkbp:compressionRatio	6:1 to 7:1
gptkbp:configuration	V12
gptkbp:coolingSystem	liquid-cooled
gptkbp:countryOfOrigin	gptkb:United_Kingdom
gptkbp:displacement	36.7 litres
gptkbp:engineType	V12 piston engine
gptkbp:firstRun	1939
gptkbp:fuelType	aviation gasoline
gptkbp:manufacturer	gptkb:Rolls-Royce_Limited
gptkbp:notableFeature	larger displacement than Merlin used in late-model Spitfires improved low-altitude performance
gptkbp:powerOutput	up to 2,500 hp
gptkbp:predecessor	gptkb:Rolls-Royce_Merlin
gptkbp:productionStartYear	1939–1955
gptkbp:stroke	6.6 in (168 mm)
gptkbp:successor	gptkb:Rolls-Royce_Eagle_22
gptkbp:supercharger	single-stage or two-stage, depending on variant
gptkbp:usedInAircraft	gptkb:aircraft gptkb:Fairey_Firefly gptkb:Avro_Shackleton gptkb:Blackburn_Firebrand
gptkbp:valvetrain	single overhead camshaft per bank
gptkbp:weight	1,980 lb (898 kg)
gptkbp:bfsParent	gptkb:Avro_Shackleton
gptkbp:bfsLayer	6
https://www.w3.org/2000/01/rdf-schema#label	Rolls-Royce Griffon V12 piston engine