Boeing T50

The Boeing T50 (company designation Model 502) was a small turboshaft engine produced by Boeing. It was the first turboshaft engine to ever power a helicopter: a modified Kaman K-225 in 1951. 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.

Two T50 were tested on a HTK-1 (Kaman HH-43 Huskie) in the 1950s, which was the first test of twin turbine engine on a helicopter.

Variants

 * T50-BO-1:
 * T50-BO-2:
 * T50-BO-4:270 hp at 6,000 output rpm, military rating turboprop.
 * T50-BO-6:
 * T50-BO-8:300 hp at 5,950 output rpm, revised reduction gear ratio, fuelsystem and other changes.
 * T50-BO-8A:
 * T50-BO-10:330 hp at 6,000 output rpm
 * T50-BO-12:
 * 502-1-1:Auxiliary power unit
 * 502-2E:Turboprop, 175 hp at 2,900 output rpm max. continuous at sea level.
 * 502-7B:Compressed air generator.
 * 502-8A:Turboshaft.
 * 502-8B:Turboprop, 210 hp at 37,500 compressor rpm for take-off.
 * 502-10B:Turboprop, 270 hp at 37,500 compressor rpm for take-off.
 * 502-10C:Turboshaft power unit / gas producer
 * 502-10F:
 * 502-10V: (T50-BO-4)
 * 502-10VB: 325 hp 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.
 * 502-11B:
 * 502-12B:
 * 502-W
 * 502-14: (T50-BO-10)
 * 550-1: (T50-BO-12)

Applications

 * 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