Starter Generator – DC 23085 Series II



The 23085 Series II DC Starter Generators include but may not be limited to part numbers: 23085-029, 23085-030, and 23085-031. They are manufactured or cataloged by Safran Power (TRW Lucas Goodrich) and operate as a motor to provide torque for engine starting and as a generator to provide DC electrical power after engine starting is accomplished. When used as an engine starter, the starter-generator can be energized either by batteries or by ground-power units. The Output Rating is 9 kW and the external starting power supply limitations are self-limiting current load of 1,700 A max. with 28 VDC max. at start receptacle and 0.004 Ohms aircraft circuit resistance. The Rating for continuous load within speed 300A, 30 VDC, 7,200 to 12,000 rpm. Generally, these Starter Generators are used on turboprop and light jet aircraft serving the commercial and military sectors and are self-excited machines incorporating four main poles and four interpoles. During on-ground operation, a fan attached to the anti-drive end of the drive shaft supplies forced-air cooling. In flight, the starter-generator, in addition to the fan, is blast-cooled through the air inlet and the aircraft’s air duct system.

Additional information

Weight 50 lbs
Dimensions 24 × 12 × 12 in

Aircraft Type

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Aircraft Model


Part Number

23085-029, 23085-030, 23085-031