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gptkbp:instance_of
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gptkb:jet_engine
|
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gptkbp:application
|
gptkb:De_Haviland_DH-4
gptkb:Vickers_Vimy
gptkb:Handley_Page_O/400
gptkb:Martin_MB-1
Boeing MB-1
Sikorsky S-29
|
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gptkbp:bore
|
5.5 in
|
|
gptkbp:compression_ratio
|
5.2:1
|
|
gptkbp:cooling_system
|
liquid-cooled
water-cooled
|
|
gptkbp:displacement
|
27.0 L
|
|
gptkbp:engine
|
naturally aspirated
influenced future aircraft engines
|
|
gptkbp:engine_configuration
|
V engine
front-mounted
|
|
gptkbp:engine_history
|
developed during World War I
|
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gptkbp:engine_power
|
high reliability
good performance at altitude
|
|
gptkbp:engine_type
|
reciprocating engine
|
|
gptkbp:exhaust_system
|
gptkb:exhaust_system
|
|
gptkbp:firing_order
|
1-10-5-8-3-12-7-2-11-6-9-4
|
|
gptkbp:first_flight
|
gptkb:1917
|
|
gptkbp:fuel_capacity
|
about 2 ft 6 in
about 4 ft 6 in
|
|
gptkbp:fuel_type
|
aviation gasoline
|
|
gptkbp:gearbox
|
reduction gearbox
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Liberty L-12 engine
|
|
gptkbp:ignition_system
|
spark ignition
|
|
gptkbp:maintenance
|
periodic maintenance required
|
|
gptkbp:manufacturer
|
gptkb:Liberty_Motor_Company
|
|
gptkbp:noise_level
|
loud operation
moderate vibration
|
|
gptkbp:number_of_engines
|
gptkb:12
|
|
gptkbp:power_output
|
400 hp
|
|
gptkbp:production_years
|
1917-1920
|
|
gptkbp:stroke
|
6.0 in
|
|
gptkbp:successor
|
Packard V-12 engine
|
|
gptkbp:tuning
|
tuned for high altitude
|
|
gptkbp:type
|
gptkb:V8_engine
|
|
gptkbp:used_in
|
World War I aircraft
|
|
gptkbp:valve_configuration
|
overhead valve
|
|
gptkbp:weight
|
about 800 lb
|
|
gptkbp:bfsParent
|
gptkb:Medium_Mark_III_tank
|
|
gptkbp:bfsLayer
|
6
|