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The Allison Model 250, now known as the Rolls-Royce M250, (US military designations T63 and T703) is a highly successful turboshaft engine family, originally developed by the Allison Engine Company in the early 1960s. The Model 250 has been produced by Rolls-Royce since it acquired Allison in 1995.
One of Allison's most successful projects is the Model 250 turboshaft/turboprop engine family, which was started by the company in the early 1960s, when helicopters started to be powered by turbine, rather than reciprocating, engines. Allison turbine engines were used to power Bell 206 Jet Ranger and Long Ranger helicopters as well as the ...
Pages in category "Rolls-Royce aircraft gas turbine engines" The following 53 pages are in this category, out of 53 total. This list may not reflect recent changes .
The RR300 is the second attempt to develop a lower-rated version of the Model 250, coming 20 years after the 350 shp Allison Model 225 of 1987. [ 2 ] The five-seat Robinson R66 light helicopter features the RR300 as a turboshaft engine, Robinson having originally intended on utilizing the standard Model 250-C20.
Pages in category "Allison aircraft engines" The following 18 pages are in this category, out of 18 total. ... Allison Model 250; P. Pratt & Whitney/Allison 578-DX; T ...
Allison T40 (Allison 500, 503) Allison T44; Allison T54; Allison T56 (501-D) Allison T61; Allison T63; Allison T71; Allison T78 [22] Allison T80; Allison T406 (AE1107) Allison T701 (Allison 501-M62) Allison T703 (Allison 250) Allison TF32; Allison TF41 (development of Rolls-Royce Spey) Allison GMA 200; Allison GMA 500; Allison AE3010; Allison ...
During the 1990s, some Bell 222s were modified with the 222B's engines and 230's Allison 250-C30G engines for improved single engine (engine-out) performance, and redesignated as 222SPs. [6] Bell 430 In 1995 the Bell 430, a stretched 230 (adding another seating row), was launched, with uprated engines and a four-blade main rotor.
The AE 2100 engine and gearbox are rated at 6,000 shaft horsepower (4,500 kilowatts), but was derated to 4,200, 4,590, and 3,600 shp (3,130, 3,420, and 2,680 kW) for the Saab 2000, Lockheed Martin C-130J Super Hercules, and IPTN N-250, respectively. [18] The engine uses six-bladed, all-composite blade Dowty propellers, including the model R381 ...