Rolls-Royce RR500

The Rolls-Royce RR500 is a family of small gas turbine engines developed by Rolls-Royce Corporation, with the RR500TP turboprop intended for small aircraft and the RR500TS turboshaft intended for light helicopters. It is a larger derivative of the Rolls-Royce RR300 turboshaft, with the engine core scaled up for more power, and it was to produce around 500 shp (373 kW) for takeoff and 380 shp (280 kW) in continuous use at a basic weight of 250 lb (113 kg). The proposed specification lists a twin-spool layout, a single-stage centrifugal compressor and an overall pressure ratio of 7.5 to 1. Development of the RR500 series ended in 2012.