Boeing 502 Engines currently in stock.
Manufacturer: The Boeing Co., Commercial Airplane Division, Turbine Program
Model: 502-6
Type: Turboshaft
Power: 160 bhp normal maximum (continuous)
Air Compressor: Single stage, centrifugal
Burners: Two: through-flow type
Turbine Stages: Two: compressor and output turbines
Compressor Turbine Speed: 36,500 rpm normal maximum (continuous)
Compressor Turbine Rotation: Counterclockwise, viewed from shaft end
Overspeed Limit: 3,210 to 3,290 rpm output shaft speed
Fuel: Kerosene or Jet-A
Oil: MIL-L-7808 OR MIL-L-23699
Electrical System: 24 Vdc
Weight: 200+ lbs (252 lbs stated in manual)
Dimensions: 43″L x 23″W x 23″H
Operating Limits:
Condition Minimum Normal Maximum
Turbine RPM Cranking 4,000 rpm 5,000 rpm 5,000 rpm
Idling 14,500 rpm 15,000 rpm 15,000 rpm
Rated Speed —– —– 36,500 rpm
Momentary —– —– 37,500 rpm
Turbine Oil Pres. Rated Speed 35 psi 50 psi 70 psi
Auto. Shutdown 18 psi 20 psi 20 psi
Fuel Pressure Starting 50 psi 100 psi 200 psi
Rated Speed —– 350 psi 500 psi
Idling Speed 10 psi 10-50 psi 50 psi
Exhaust Temp. Continuous —– 1150F(621C) 1225F(663C)
Auto. Shutdown —– 1300F(704C)
