Turbomeca Arriel
The Turbomeca Arriel is a series of French turboshaft engines that first ran in 1974.[1] Delivering 650 to 1,000 hp (480 to 750 kW), over 12,000 Arriel engines have been produced from 1978 to 2018, logging more than 50 million flight hours for 40 helicopter applications. In June 2018, 1,000 Arriel 2D were in service, powering H125 and H130 single-engine helicopters, having logged one million flight hours since 2011. After endurance tests and fleet data analysis, their TBO increased by 25% to 5,000 hours and mandatory inspection rose to 15 years with no hourly limit, lowering maintenance costs.[2]
| Arriel | |
|---|---|
 | |
| Cutaway of a Turbomeca Arriel | |
| Type | Turboshaft |
| National origin | France |
| Manufacturer | Turbomeca |
| First run | 1974 |
| Major applications | Agusta A109 HH-65C Dolphin Sikorsky S-76 Harbin Z-9 Harbin Z-19 |
| Number built | 10,000 |
The Liming WZ-8 (turboshaft) and Liming WJ-9 (turboprop) are the designations for Turbomeca Arriel production in China.
Applications
Specifications (Arriel 1)
Data from FAA Type Certificate Data Sheet.[3]
General characteristics
- Type: Turboshaft engine
- Length: 112.2 cm (44.2 in)
- Diameter: 60 cm (24 in)
- Dry weight: 111 kg (245 lb)
Components
- Compressor: Single-stage axial plus single-stage centrifugal
- Combustors: Annular combustion chamber
- Turbine: Single-stage power turbine, two-stage gas generator turbine
- Fuel type: Jet A1
Performance
- Maximum power output: 681 shp (508 kW)
- Overall pressure ratio: 8:1
- Turbine inlet temperature: 840 °C (1,540 °F)
- Power-to-weight ratio: 5 kilowatts per kilogram (3.0 hp/lb) approx
References
- Gunston 1989, p.170.
- Mark Huber (June 27, 2018). "Safran Boosts Arriel 2D TBO by 25 Percent". AIN online.
- FAA Type Certificate Data Sheet Retrieved: 2 November 2008
- Gunston, Bill (1986). World Encyclopedia of Aero Engines. Wellingborough: Patrick Stephens. p. 166.
External links
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