| gptkbp:instanceOf | gptkb:piston_engine 
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                                | gptkbp:basedOn | gptkb:Rolls-Royce_Merlin 
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                                | gptkbp:configuration | 60° V12 
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                                | gptkbp:countryOfOrigin | gptkb:United_States 
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                                | gptkbp:displacement | 1,649 cu in (27.0 L) 
 | 
                        
                            
                                | gptkbp:engineType | V-12 liquid-cooled piston engine 
 | 
                        
                            
                                | gptkbp:firstFlight | 1941 
 | 
                        
                            
                                | gptkbp:fuelType | gptkb:Aviation_gasoline 
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                                | gptkbp:manufacturer | gptkb:Packard 
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                                | gptkbp:notableAircraft | gptkb:P-51B_Mustang gptkb:P-51D_Mustang
 gptkb:P-51C_Mustang
 Avro Lancaster Mk X
 P-40F Warhawk
 P-40L Warhawk
 P-51K Mustang
 de Havilland Mosquito (US-built)
 
 | 
                        
                            
                                | gptkbp:notableFeature | improved high-altitude performance critical to Allied air superiority in WWII
 licensed production of British design
 
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                                | gptkbp:notableVariant | Packard V-1650-1 Packard V-1650-3
 Packard V-1650-7
 
 | 
                        
                            
                                | gptkbp:numberBuilt | over 55,000 
 | 
                        
                            
                                | gptkbp:powerOutput | up to 1,720 hp (1,280 kW) 
 | 
                        
                            
                                | gptkbp:productionStartYear | 1941–1945 
 | 
                        
                            
                                | gptkbp:supercharger | two-stage, two-speed 
 | 
                        
                            
                                | gptkbp:usedBy | gptkb:Royal_Air_Force gptkb:United_States_Army_Air_Forces
 gptkb:Royal_Canadian_Air_Force
 
 | 
                        
                            
                                | gptkbp:usedIn | gptkb:aircraft gptkb:Curtiss_P-40F
 Avro Lancaster (US-built)
 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:Packard_V-12_engines gptkb:Packard_V-12_engine
 
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                                | gptkbp:bfsLayer | 8 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Packard Merlin 
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