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Data from The Instrumentation Design And Control of a T63-A-700 Gas Turbine Engine General characteristics Type: Turboshaft Length: 40.5 in (1,029 mm) Diameter: 22.5 in (572 mm) Dry weight: 138.5 lb (63 kg) dry Components Compressor: 6-stage axial + 1-stage centrifugal compressors Combustors: Single can combustion chamber Turbine: 2-stage axial gas generator power turbine + 2-stage axial free ...
First prototype of the Fantrainer family. First flight in 1977 powered by two 150 shaft horsepower (110 kW) Wankel engines - 300 shaft horsepower (220 kW) in total, changed in 1978 to Allison engine. ATI-2 Second prototype. Fantrainer 400 Stretched fuselage version with metal wings, powered by a 406 kW (545 hp) Allison 250-C20B turboshaft engine.
For instance the Model 250-C40, with an overall pressure ratio of 9.2:1 at an airflow 6.1 lb/s, develops 715 shp. The RR300 mates a scaled-down centrifugal compressor from the Model 250-C40/47 to a combustor and turbine similar to that of the Model 250-C20, replacing the C20's complex six-stage axial/single-stage centrifugal compressor.
Allison's manager, Norman Gilman, decided to experiment with his own high-power cylinder design. Allison's engine became Manufacturer Serial No. 1, AAC S/N 25-521. It was the X-4520, a 24-cylinder air-cooled 4-bank “X” configured engine designed by the Army Air Corps and built by the Allison Engineering Company in 1925.
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The improved 330SP was introduced in May 1997 and featured an improved rotor and raised skids, which could be retrofitted to previous 330 models. An Allison (later Rolls-Royce) 250-C20W turboshaft was derated to 165 kW (220 hp), giving the 330SP excellent hot and high performance, maintaining power output to 18,000 feet. [citation needed]
Allison Transmission Holdings Inc. is an American manufacturer of commercial duty automatic transmissions and hybrid propulsion systems. Allison products are specified by over 250 vehicle manufacturers and are used in many market sectors, including bus, refuse, fire, construction, distribution, military, and specialty applications.
Eight-seat civil version, powered by two Allison Model 250-C20R-1 turboshaft engines. [15] A109C MAX Aeromedical evacuation version based on A109C with extra-wide cabin and access doors hinged top and bottom, rather than to one side. [46] A109D One prototype only A109E Power Upgraded civilian version, initially powered by two Turbomeca Arrius ...