• Thumbnail for Allison Model 250
    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...
    12 KB (1,383 words) - 15:04, 29 March 2025
  • Thumbnail for SIAI-Marchetti SF.260
    performed the first flight of a turboprop-powered SF.260TP, powered by an Allison Model 250 engine flat-rated at 350 shp. This variant was marketed towards the...
    43 KB (5,075 words) - 06:35, 22 May 2025
  • Thumbnail for Beechcraft T-34 Mentor
    school in 1979. Allison Turbine Mentor Conversion of surplus T-34 Mentors to be powered by Allison Model 250 turboprop engines. Model 73 Jet Mentor Powered...
    33 KB (3,817 words) - 22:49, 17 April 2025
  • Thumbnail for AgustaWestland AW109
    outfit it with a pair of Allison 250-C14 turboshaft engines. While early considerations had been made for a militarised model, which the company internally...
    62 KB (5,475 words) - 22:15, 9 May 2025
  • Thumbnail for McDonnell Douglas MD 500 Defender
    157 kg) normal MTOW 3,000 lb (1,361 kg) overload MTOW Powerplant: 1 × Allison Model 250-C20B turboshaft engine, 420 shp (310 kW) Main rotor diameter: 26 ft...
    22 KB (2,079 words) - 20:02, 16 April 2025
  • Thumbnail for MTT Turbine Superbike
    and custom builder, to head the project. Early models were powered by a Rolls-Royce-Allison Model 250-C18 gas turbine producing a claimed 320 hp (240 kW)...
    9 KB (871 words) - 12:29, 14 April 2025
  • Thumbnail for Fairchild Hiller FH-1100
    operators of the FH-1100 were impacted by a serious issue with the Allison Model 250-C18 turboshaft powerplant it used, the exhibited failure rate was...
    24 KB (2,311 words) - 06:58, 31 March 2025
  • Thumbnail for Gas turbine
    motorcycle powered by a turbine engine – specifically, a Rolls-Royce Allison model 250 turboshaft engine, producing about 283 kW (380 bhp). Speed-tested...
    100 KB (12,233 words) - 10:54, 6 May 2025
  • Thumbnail for MD Helicopters MD 600
    rotor (the MD 520N has a five blade unit) and an uprated Allison (now Rolls-Royce) Model 250 turboshaft. The prototype was modified to MD 600N standard...
    7 KB (611 words) - 00:28, 8 May 2025
  • C-20F/G/H/J, variants of the Gulfstream IV C20 is a version of the Allison Model 250 aircraft engine Bill C-20, the Canadian Clarity Act OMX Copenhagen...
    2 KB (268 words) - 01:45, 23 April 2024
  • M250 can refer to: M250 series, a Japanese freight train type Allison Model 250, a British aircraft engine M250 grenade launcher, an American grenade...
    313 bytes (78 words) - 00:34, 23 November 2022
  • Thumbnail for Fuji T-5
    the Japan Maritime Self-Defense Force. Fuji refitted a KM-2 with an Allison Model 250 turboprop engine in place of the original Lycoming piston engine,...
    6 KB (572 words) - 15:44, 3 February 2025
  • Thumbnail for 1977 Encino helicopter crash
    JetRanger serial number 433 built in 1969. It was powered by a single Allison model 250-C20B turboshaft engine, rated at 420 shaft horsepower. The aircraft...
    9 KB (875 words) - 01:36, 17 May 2025
  • Thumbnail for Aircraft engine
    fuels for general aviation aircraft a priority for pilots’ organizations. Model aircraft typically use nitro engines (also known as "glow engines" due to...
    24 KB (2,123 words) - 16:02, 9 May 2025
  • Allison Transmission Holdings Inc. is an American manufacturer of commercial duty automatic transmissions and hybrid propulsion systems. Allison products...
    51 KB (4,609 words) - 15:29, 8 April 2025
  • Thumbnail for Lycoming LTS101
    8:1 hp/lb Related development Honeywell HTS900 Comparable engines Allison Model 250 Related lists List of aircraft engines "Honeywell LTS101". Archived...
    4 KB (290 words) - 11:45, 13 October 2024
  • Thumbnail for Sikorsky S-75
    (2,913 kg) Max takeoff weight: 8,470 lb (3,842 kg) Powerplant: 2 × Allison Model 250-C30S turboshaft engines, 650 shp (480 kW) each for take-off Main rotor...
    6 KB (521 words) - 14:57, 3 February 2025
  • Thumbnail for PZL Kania
    include a modified fuselage with more pointed nose, new engines (Allison Model 250-C20B turboshaft engines) each rated at 313 kW (420 hp), new composite...
    9 KB (1,006 words) - 11:55, 30 October 2024
  • Thumbnail for Klimov GTD-350
    Power-to-weight ratio: 2.20 kW/kg (1.34 hp/lb) Comparable engines Allison Model 250 Related lists List of aircraft engines Wikimedia Commons has media...
    3 KB (312 words) - 19:40, 11 February 2024
  • Thumbnail for MBB Bo 105
    main rotor from Westland Helicopter's Scout rotorcraft and a pair of Allison Model 250 turboshaft engines instead of their production counterparts. Sud Aviation...
    61 KB (5,679 words) - 06:22, 22 May 2025
  • Thumbnail for Cessna CH-1 Skyhook
    Light Observation Helicopter program, it was a CH-1C powered by an Allison Model 250 engine mounted behind the rear passenger seat. CH-1D CH-1C modified...
    14 KB (1,595 words) - 19:07, 11 September 2024
  • Thumbnail for SIAI-Marchetti SM.1019
    tanks; Oil capacity 8 L (2.1 US gal; 1.8 imp gal) Powerplant: 1 × Allison Model 250-B17B turboprop engine, 298 kW (400 hp) Propellers: 3-bladed Hartzell...
    6 KB (721 words) - 13:56, 13 October 2024
  • Thumbnail for Allison V-1710
    The Allison V-1710 aircraft engine designed and produced by the Allison Engine Company was the most common US-developed V-12 liquid-cooled engine in service...
    38 KB (5,279 words) - 21:28, 2 April 2025
  • Thumbnail for Allison T56
    T56/Model 501 engine has been used in a number of experimental efforts, and as something other than a turboprop powerplant. In early 1960, two Allison YT56-A-6...
    28 KB (3,001 words) - 18:18, 17 February 2025
  • Thumbnail for Allison Engine Company
    to be widely used in the airline industry. One of Allison's most successful projects is the Model 250 turboshaft/turboprop engine family, which was started...
    23 KB (2,531 words) - 21:50, 20 December 2024
  • Thumbnail for Rolls-Royce AE 2100
    developed by Allison Engine Company, now part of Rolls-Royce North America. The engine was originally known as the GMA 2100, when Allison was a division...
    21 KB (1,922 words) - 02:57, 8 February 2024
  • Thumbnail for City of Norwich Aviation Museum
    Int'l Airport Rolls-Royce Avon partially sectioned Allison Model 250-C20B partially sectioned Allison J33 Rolls-Royce Derwent RB.37 Mk.8 Rolls-Royce Gnome...
    13 KB (996 words) - 23:41, 19 August 2024
  • Thumbnail for Vulcanair Canguro
    tanks Oil capacity: 11.4 L (3.0 US gal; 2.5 imp gal) Powerplant: 2 × Allison Model 250-B17C turboprop, 313 kW (420 hp) each Propellers: 3-bladed Hartzell...
    7 KB (738 words) - 10:21, 22 May 2025
  • Thumbnail for Allison T40
    The Allison T40, company designation Allison Model 500, was an early American turboprop engine composed of two Allison T38 power sections driving a contra-rotating...
    13 KB (1,594 words) - 13:39, 2 January 2025
  • Thumbnail for Bobby Allison
    Robert Arthur Allison (December 3, 1937 – November 9, 2024) was an American professional stock car racing driver and owner. Allison was the founder of...
    131 KB (4,595 words) - 04:18, 19 May 2025