| H-Series | |
|---|---|
 | |
| Let L-410NG H85 installation | |
| Type | Turboprop |
| National origin | Czech Republic/United States |
| Manufacturer | GE BGA Turboprops |
| First run | 2009 |
| Major applications | Thrush Model 510 Let L-410NG Technoavia Rysachok |
| Developed from | Walter M601 |
The General Electric H-Series is a family of turboprop aircraft engines produced by GE BGA Turboprops. The initial H80 is an updated derivative of the Walter M601, while the H75 and H85 are later derivatives.
The H80 was launched in 2009 based on the M601. GE added a new compressor, blisks, blades and new stators to enhance power by 3% and boost efficiency by 10%. [1] It reaches 597 kW (801 hp) (shaft horsepower) from the M601-F's 580 kW (780 hp), [2] and improves hot and high performance.
The H80 was certificated by EASA at 13 December 2011, followed by the FAA at 13 March 2012. [3] Its Russian type certificate was received in October 2012, and the engine also approved by Brazilian Civil Aviation agency (ANAC) and the Argentine Administración Nacional de Aviación Civil. [4]
Its Electronic Engine and Propeller Control (EEPC) system received EASA type certification in late 2016. The Diamond Dart 550 military trainer is due to fly it in early 2018 and it will be certified on the Thrush 510G crop duster in this year. [1]
The two-shaft, reverse flow design is derived from the Walter M601: its core features a two-stage axial and single-stage centrifugal compressor, an annular combustor and a single turbine stage, and its propulsion section is powered by a single-stage turbine driving a two-stage planetary gearbox. GE redesigned the compressor with 3D aero to improve its pressure ratio and upgraded the hot section and turbine stages with modern metal alloys for higher temperatures with the same durability. [5]
The H75-100 weighs 94 lb (43 kg) more than the equivalent PT6 but pioneers single lever electronic propeller and engine control in general aviation, for an initial TBO of 4,000 hr which could be increased with experience. [5] It promises 10% better fuel burn, 10% longer overhaul and lower maintenance costs than the PT6A-135 for the Nextant G90XT. [6]
| Variant | H75 | H80 | H85 |
|---|---|---|---|
| Dimensions (L×W×H) | 1,670×560×580 mm (66×22×23 in) | ||
| basic dry | 390 lb (180 kg) | ||
| Compressor [13] | 2-stage axial + 1-stage centrifugal | ||
| Combustor [13] | Annular with fuel slinger | ||
| turbine [13] | 1-stage axial gas.gen + 1-stage axial power | ||
| fuel type | Jet-A/A1 | ||
| Shaft power | 751 hp (560 kW) | 800 hp (597 kW) | 850 hp (634 kW) |
| Eq. shaft power | 795 hp (593 kW) | 845 hp (630 kW) | 898 hp (670 kW) |
| Power-to-weight ratio | 1.93 | 2.05 | 2.18 |
| gas gen. RPM | 35,524 | 35,854 | 36,183 |
| Shaft RPM | 2,080 | ||
| airflow | 8.1 lb (3.7 kg)/s | 8.2 lb (3.7 kg) | 8.4 lb (3.8 kg) |
| TBO | 4,000 h | ||
| Overall pressure ratio | 6.7:1 [14] | ||
Related development
Comparable engines
Related lists
A turboprop is a turbine engine that drives an aircraft propeller.
The Pratt & Whitney Canada PT6 is a turboprop aircraft engine produced by Pratt & Whitney Canada. Its design was started in 1958, it first ran in February 1960, first flew on 30 May 1961, entered service in 1964 and has been continuously updated since. It consists of two basic sections: a gas generator with accessory gearbox and a free power turbine with reduction gearbox, and is often seemingly mounted backwards in an aircraft in so far as the intake is at the rear and the exhaust at the front. Many variants of the PT6 have been produced, not only as turboprops but also as turboshaft engines for helicopters, land vehicles, hovercraft, and boats; as auxiliary power units; and for industrial uses. By November 2015, 51,000 had been produced, had logged 400 million flight hours from 1963 to 2016. It is known for its reliability with an in-flight shutdown rate of 1 per 651,126 hours in 2016. The PT6A covers the power range between 580 and 1,940 shp while the PT6B/C are turboshaft variants for helicopters.
The Europrop International TP400-D6 is an 11,000 shp (8,200 kW) powerplant, developed and produced by Europrop International for the Airbus A400M Atlas military transport aircraft. The TP400 is the most powerful turboprop in service using a single propeller; only the Kuznetsov NK-12 using contra-rotating propellers is larger.
The Rolls-Royce BR700 family of turbofan engines for regional jets and corporate jets. It was developed by BMW and Rolls-Royce plc through the joint venture BMW Rolls-Royce AeroEngines GmbH, established in 1990. The BR710 first ran in 1995. It is manufactured in Dahlewitz, Germany. Rolls-Royce took full control of the company in 2000, which is now known as Rolls-Royce Deutschland. The military designation of the series is F130.
The Pratt & Whitney Canada PW100 aircraft engine family is a series of 1,800 to 5,000 shaft horsepower turboprops manufactured by Pratt & Whitney Canada. Pratt & Whitney Canada dominates the turboprops market with 89% of the turboprop regional airliner installed base in 2016, leading GE Aviation and Allison Engine Company.
The Rolls-Royce RB.53 Dart is a turboprop engine designed and manufactured by Rolls-Royce Limited. First run in 1946, it powered the Vickers Viscount on its maiden flight in 1948. A flight on July 29 of that year, which carried 14 paying passengers between Northolt and Paris–Le Bourget Airport in a Dart-powered Viscount, was the first regularly scheduled airline flight by a turbine-powered aircraft. The Viscount was the first turboprop-powered aircraft to enter airline service - British European Airways (BEA) in 1953.
The Allison T56 is an American single-shaft, modular design military turboprop with a 14-stage axial flow compressor driven by a four-stage turbine. It was originally developed by the Allison Engine Company for the Lockheed C-130 Hercules transport entering production in 1954. It has been a Rolls-Royce product since 1995 when Allison was acquired by Rolls-Royce. The commercial version is designated 501-D. Over 18,000 engines have been produced since 1954, logging over 200 million flying hours.
The Let L-410 Turbolet is a twin-engine short-range transport aircraft, manufactured by the Czech aircraft manufacturer Let Kunovice, often used as an airliner. The aircraft is capable of landing on short and unpaved runways and operating under extreme conditions from −50 to +50 °C. By 2016, 1,200 L-410s had been built, and over 350 are in service in more than 50 countries.
The Rolls-Royce Trent 1000 is a high-bypass turbofan engine produced by Rolls-Royce plc, one of the two engine options for the Boeing 787 Dreamliner, competing with the General Electric GEnx. It first ran on 14 February 2006 and first flew on 18 June 2007 before a joint EASA/FAA certification on 7 August 2007 and entered service on 26 October 2011. Corrosion-related fatigue cracking of intermediate pressure (IP) turbine blades was discovered in early 2016, grounding up to 44 aircraft and costing Rolls-Royce at least £1.354 billion.
The General Electric GE38 is a gas turbine developed by GE Aviation for turboprop and turboshaft applications. It powers the Sikorsky CH-53K King Stallion as the T408.
The General Electric T700 and CT7 are a family of turboshaft and turboprop engines in the 1,500–3,000 shp (1,100–2,200 kW) class.
The Turbomeca Artouste is an early French turboshaft engine, first run in 1947. Originally conceived as an auxiliary power unit (APU), it was soon adapted to aircraft propulsion, and found a niche as a powerplant for turboshaft-driven helicopters in the 1950s. Artoustes were licence-built by Bristol Siddeley in the UK, Hindustan Aeronautics Limited in India, and developed by Continental CAE in the US as the Continental T51. Two major versions of the Artouste were produced. The Artouste II family, mainly used in the Aérospatiale Alouette II helicopter, had a one-stage centrifugal compressor and a two-stage turbine, with gearbox-limited power of 300 kW (400 hp). The Artouste III family, mainly used in Aérospatiale's Alouette III and Lama helicopters, had a two-stage axial-centrifugal compressor and a three-stage turbine, with gearbox-limited power of 420–440 kW (560–590 hp).
The Walter M601 is a turboprop aircraft engine produced by Walter Aircraft Engines of the Czech Republic. The company's first turboprop, the M601 is used in business, agricultural and military training aircraft.
The General Electric T31 was the first turboprop engine designed and built in the United States.
The Allison T38 was an early turboprop engine developed by Allison Engine Company during the late 1940s. The T38 became the basis for the very successful family of Allison T56 turboprop engine.
The Continental CAE T51 was a small turboshaft engine produced by Continental Aviation and Engineering (CAE) under license from Turbomeca. A development of the Artouste, it was followed by three additional turboshaft engines, the T72, the T65, and the T67. However, none of these engines, including the T51, entered full production. CAE abandoned turboshaft development in 1967 after the XT67 lost to the Pratt & Whitney Canada PT6T (T400) to power the Bell UH-1N Twin Huey.
The Technoavia Rysachok is a general purpose, twin turboprop-powered engined light utility aircraft, designed and built in Russia by Technoavia. Certification was expected by 2012 and by autumn 2011 three flight pre-production examples had been completed and flown. As of 2015 the certification process is stalled and Technoavia has declared that it is no longer involved in the project.
The Ivchenko AI-24 turboprop aircraft engine was designed and developed in the late-1950s by the Ivchenko design bureau and manufactured thereafter by Motor Sich. It was designed to power Antonov's successful An-24, An-26 and An-30 aircraft series.
The General Electric Catalyst is a turboprop engine by GE Aviation. It was announced on 16 November 2015 and will power the Beechcraft Denali, it first ran on December 22, 2017, and should be certified in 2023. The 850 to 1,600 hp engine aims for 20% better efficiency than its competition thanks to a 16:1 overall pressure ratio, variable stator vanes, cooled turbine blades, 3D printed parts and FADEC.
The Allison T56 turboprop engine has been developed extensively throughout its production run, the many variants are described by the manufacturer as belonging to four main series groups.