The Boeing T50 (company designation Model 502) was a small turboshaft engine produced by Boeing. Based on Boeing's earlier Model 500 gas generator, the T50's main application was in the QH-50 DASH helicopter drone of the 1950s. An up-rated version designated Model 550 was developed to power the QH-50D and was given the military designation T50-BO-12.
T50-BO-4
270 hp (201.34 kW) at 6,000 output rpm, military rating turboprop.
T50-BO-6
T50-BO-8
300 hp (223.71 kW) at 5,950 output rpm, revised reduction gear ratio, fuelsystem and other changes.
T50-BO-8A
T50-BO-10
330 hp (246.08 kW) at 6,000 output rpm
T50-BO-12
502-2E
Turboprop, 175 hp (130.50 kW) at 2,900 output rpm max. continuous at sea level.
502-7B
Compressed air generator.
502-8A
Turboshaft.
502-8B
Turboprop, 210 hp (156.60 kW) at 37,500 compressor rpm for take-off.
502-10B
Turboprop, 270 hp (201.34 kW) at 37,500 compressor rpm for take-off.
502-10C
502-10V
(T50-BO-4)
502-10VB
325 hp (242.35 kW) at 3,000 output rpm, variant of -10V / T50-B0-4 with revised reduction gear ratio.
502-10VC
(T50-BO-8)
502-11
Compressed air generator.
502-12B
502-W
502-14
(T50-BO-10)
550-1
(T50-BO-12)
T50 (Model 502)
Gyrodyne QH-50 DASH
Kaman K-225
Kaman HTK-1
Kaman K-1125
XL-19B Bird Dog
Radioplane RP-77D
GT502
Stridsvagn 103
Data from Jane's All the World's Aircraft 1962-63.
Type: Turboshaft
Length: 37.2 in (945 mm)
Diameter: 22.5 in (572 mm)
Dry weight: 215 lb (98 kg)
Compressor: Single-stage centrifugal flow
Combustors: 2 can combustors
Turbine: 1x axial gas generator power turbine stage + 1x axial free-power turbine stage
Fuel type: Aviation kerosene
Oil system: pressure spray/splash, oil specification: MIL-L-7808
Maximum power output: 330 hp (246.08 kW) military rating at 6,000 output shaft rpm
Overall pressure ratio: 4.35:1
Air mass flow: (4.1 lb (2 kg))/s
Turbine inlet temperature: Jet pipe Temperature: 1,140 °F (616 °C)
Specific fuel consumption: 0.87 lb/(hp h) (0.532 kg/(kW h))
Power-to-weight ratio: 1.535 hp/lb (2.523 kW/kg)
