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Boeing
Model 502-6 Gas Turbine Engine |
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Model and type
502-6. Turboshaft,( free turbine), The gas generator incorporates a 1-stage centrifugal
compressor,2 through-flow combustors,1-stage axial flow turbine. The power turbine
incorporates an axial flow turbine wheel assembly, a planetary reduction gear.
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Compressor
Air inlet in front of unit. Single stage centrifugal, Single-entry impeller mounted on
home shaft supported in 2 bearings. one ball, one bushing. air mass flow 3.5 Ib/sec/36,500
rpm.
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Combustor
Two through-flow type.
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Turbine (Gas generator)
1-stage axial flow turbine. Maximum temperature 1225. F (663)C.
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Turbine (power)
axial flow free turbine wheel attached to home gear train pinion and reduction gear. |
Exhaust
Fixed area single outlet,exhausted upward. |
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Power outlet
Reduction gearbox at rear of unit. Output shaft 2,750 rpm. |
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Fuel system
Woodward integral fuel system. pump, governor, internal relief valve, and flow control. |
Ignition System
2 Bendix air-gap, ignition system. and 2 glow-type igniters. |
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Lubrication
Sump type, 35-70 psi Pressurized system. |
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Width and height
23.20 in and 23.34 in |
Length
42.90 in |
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Weight
200.0 Ib |
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Power weight
0.8 shp/Ib |
Fuel spec
Kerosene, or Jet-A |
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Fuel consumption
1.5 Ib/shp-hr |
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Oil spec; consumption
MIL-L-7808: 0.02phr. |
Rating
160 shp at 23,725 rpm power turbine rpm. |
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