The General Electric H-Series is a family of

turboprop A turboprop is a Gas turbine, gas turbine engine that drives an aircraft Propeller (aeronautics), propeller. A turboprop consists of an intake, reduction drive, reduction gearbox, gas compressor, compressor, combustor, turbine, and a propellin ...

aircraft engine An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Aircraft using power components are referred to as powered flight. Most aircraft engines are either piston engines or gas turbin ...

s produced by GE BGA Turboprops. The initial H80 is an updated derivative of the

Walter M601 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. Development The turboprop was ...

, while the H75 and H85 are later derivatives.

Development

The H80 was launched in 2009 based on the M601. GE added a new compressor,

blisk A blisk (portmanteau of bladed disk) is a turbomachine component comprising both rotor disk and blades as a single part instead of a disk assembled with individual removable blades. Blisks generally have better aerodynamics than conventional rot ...

s, blades and new stators to enhance power by 3% and boost efficiency by 10%. It reaches (

shaft horsepower Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are th ...

) from the M601-F's , and improves

hot and high In aviation, hot and high is a condition of low air density due to high ambient temperature and high airport elevation. Air density decreases with increasing temperature and altitude. The lower air density reduces the power output from an airc ...

performance. The H80 was certificated by EASA at 13 December 2011, followed by the FAA at 13 March 2012. 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. Its Electronic Engine and Propeller Control (EEPC) system received EASA type certification in late 2016. The

Diamond Dart 550 The Diamond DART is a series of tandem, two-seat civilian and military turboprop trainers manufactured by Austrian Diamond Aircraft, "DART" meaning ''Diamond Aircraft Reconnaissance Trainer''. Development The DART-450 made its first flight ...

military trainer is due to fly it in early 2018 and it will be certified on the Thrush 510G crop duster in this year.

Design

The two-shaft, reverse flow design is derived from the

: its core features a two-stage axial and single-stage

centrifugal compressor Centrifugal compressors, sometimes called impeller compressors or radial compressors, are a sub-class of dynamic axisymmetric work-absorbing turbomachinery. They achieve pressure rise by adding energy to the continuous flow of fluid through th ...

, an

annular combustor A combustor is a component or area of a gas turbine, ramjet, or scramjet engine where combustion takes place. It is also known as a burner, burner can, combustion chamber or flame holder. In a gas turbine engine, the ''combustor'' or combustion ch ...

and a single

turbine A turbine ( or ) (from the Greek , ''tyrbē'', or Latin ''turbo'', meaning vortex) is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. The work produced can be used for generating electrical ...

stage, and its propulsion section is powered by a single-stage turbine driving a two-stage

planetary gearbox An epicyclic gear train (also known as a planetary gearset) is a gear reduction assembly consisting of two gears mounted so that the center of one gear (the "planet") revolves around the center of the other (the "sun"). A carrier connects the ...

. 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. The H75-100 weighs 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. It promises 10% better fuel burn, 10% longer overhaul and lower maintenance costs than the PT6A-135 for the Nextant G90XT.

Variants

;H80: formerly the M601H-80 ;H75: 750 shp or 550 shp derivatives ;H75-A: 550 shp derivative with aerobatic modifications ;H85: 850 shp derivative

Applications

CAIGA Primus 150 The AVIC Leadair AG300, previously called Primus 150, built by the China Aviation Industry General Aircraft, is a development of the Epic LT aircraft built using the international rights to Epic Aircraft bought in bankruptcy in 2010. As part ...

(H85) *

(H75-100) * Dornier Do-28 G92 (H75-200) *

Let L-410 Turbolet The Let L-410 Turbolet is a twin-engine short-range transport aircraft designed and produced by the Czech Republic, Czech aircraft manufacturer Aircraft Industries, Let Kunovice (named Aircraft Industries since 2005). It was developed as the ''L ...

UVP-E20 (H80-200) and L-410NG (H85) * Nextant G90XT (H75-100) *

Technoavia Rysachok The Technoavia Rysachok (Ru:Рысачок, ) 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-product ...

(H80) * Thrush Model 510 (H80)

Specification (H80)

References

External links

H-Series , GE Aviation

EASA type certification data sheet

* ttp://www.leteckemotory.cz/motory/h80 H80 on LeteckeMotory.cz(cs) {{GE aeroengines 2000s turboprop engines