|
gptkbp:instance_of
|
gptkb:jet_engine
|
|
gptkbp:application
|
gptkb:aircraft
gptkb:military_aircraft
|
|
gptkbp:compression_ratio
|
6.5:1
|
|
gptkbp:control_system
|
mechanical control
|
|
gptkbp:cooling_system
|
air-cooled
direct air cooling
|
|
gptkbp:displacement
|
4360 cubic inches
|
|
gptkbp:engine
|
gptkb:Pratt_&_Whitney_R-4000
four-stroke cycle
important in aviation history
|
|
gptkbp:engine_altitude_performance
|
good altitude performance
|
|
gptkbp:engine_configuration
|
horizontally opposed
conventional design
nose-mounted
radial layout
|
|
gptkbp:engine_design_purpose
|
military and commercial use
|
|
gptkbp:engine_power
|
high performance
high reliability
long lifespan
good efficiency
|
|
gptkbp:engine_torque-to-weight_ratio
|
high torque-to-weight ratio
|
|
gptkbp:engine_type
|
piston engine
|
|
gptkbp:first_flight
|
gptkb:1944
|
|
gptkbp:fuel_economy
|
moderate fuel consumption
|
|
gptkbp:fuel_type
|
aviation gasoline
carbureted
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Pratt & Whitney R-4360-78
|
|
gptkbp:ignition_system
|
dual ignition
|
|
gptkbp:maintenance
|
moderate maintenance
|
|
gptkbp:manufacturer
|
gptkb:Pratt_&_Whitney
|
|
gptkbp:noise_level
|
low vibration
moderate noise
|
|
gptkbp:notable_users
|
gptkb:Lockheed_Constellation
gptkb:Martin_Mars
gptkb:Boeing_Stratocruiser
|
|
gptkbp:number_of_engines
|
gptkb:28
four-row
|
|
gptkbp:power_output
|
3000 horsepower
|
|
gptkbp:production_years
|
1944-1955
|
|
gptkbp:propeller
|
variable-pitch propeller
|
|
gptkbp:propulsion
|
high power-to-weight ratio
high thrust
|
|
gptkbp:successor
|
gptkb:Pratt_&_Whitney_R-2800
|
|
gptkbp:torque
|
high torque
|
|
gptkbp:type
|
gptkb:radial_engine
|
|
gptkbp:used_in
|
gptkb:Boeing_B-17_Flying_Fortress
gptkb:Douglas_DC-7
gptkb:Convair_B-36_Peacemaker
|
|
gptkbp:valve_configuration
|
overhead valves
|
|
gptkbp:weight
|
1,800 pounds
|