Liberty L-12B engine

GPTKB entity

Statements (50)
Predicate Object
gptkbp:instanceOf aircraft engine
gptkbp:application gptkb:World_War_I_aircraft
gptkbp:bore 5.5 in
gptkbp:commissioningDate 1916
gptkbp:compressionRatio 5.2:1
gptkbp:coolingSystem water-cooled
liquid cooling system
gptkbp:cylinderCount 12
gptkbp:displacement 12.0 L
gptkbp:drivetrain overhead valve
gptkbp:engine 800 mm
1,200 mm
600 mm
V engine
used in various aircraft models
aircraft propulsion
influenced future aircraft engine designs
272 kg
gptkbp:engineConfiguration V12 configuration
produced_in_large_quantities_during_WWI
gptkbp:enginePower 298 kW
gptkbp:engineType high power-to-weight ratio
reciprocating engine
multiple variants developed
gptkbp:firstFlight 1917
gptkbp:fuelType spark ignition
aviation gasoline
carbureted
gptkbp:hasArea extensively tested before deployment
gptkbp:historical_significance first mass-produced aircraft engine in the U.S.
https://www.w3.org/2000/01/rdf-schema#label Liberty L-12B engine
gptkbp:is_used_in military aircraft
gptkbp:manufacturer gptkb:Liberty_Engine_Company
gptkbp:maximum_speed 1,800 RPM
gptkbp:notableUsers gptkb:United_States_Army_Air_Service
gptkbp:operationalHistory part of aviation history.
gptkbp:performances high reliability
detailed specifications available
excellent performance in flight
gptkbp:powerOutput 400 hp
gptkbp:productionYears 1917-1920
gptkbp:purpose military aviation
gptkbp:related_engine Liberty engine family
gptkbp:replacedBy gptkb:Wright_R-1300_engine
gptkbp:setting liquid-cooled
gptkbp:stroke 6.0 in
gptkbp:successor gptkb:Liberty_L-12_engine
gptkbp:torque 1,200 Nm
gptkbp:type gptkb:V12_engine
gptkbp:weight 600 lb