Arrius
Turbomeca Arrius 1B
Type	Turboshaft
National origin	France
Manufacturer	Safran Helicopter Engines
First run	1981
Major applications	Eurocopter EC120 Colibri Eurocopter EC135 Kamov Ka-226
Number built	2800

The Turbomeca Arrius is one of a family of turboshaft engines for helicopter use, first produced in 1981. As of 2012, some 2,700 units had been sold. Power ranges between 357 kW (479 shp) and 530 kW (716 shp) for different versions. Following Turbomeca tradition, the Arrius was named after a Pyrenean peak (pic d'Arrius), located in the Ossau Valley near Pau.

Variants

Arrius 1A

Arrius 1A1

Arrius 1M

Arrius 2B1

Arrius 2B1A

Arrius 2B2

Arrius 2F

Arrius 2K1

Arrius 2K2

Arrius 2G1

Arrius 2R

Applications

Turboshafts

• Eurocopter AS355 N Ecureuil 2 (2 x Arrius 1A)
• Eurocopter AS355 NP Ecureuil 2 (2 x Arrius 1A1)
• Eurocopter AS555 Fennec (2 x Arrius 1M)
• Eurocopter EC135 T1 (2 x Arrius 2B1/2B1A)
• Eurocopter EC135 T2 (2 x Arrius 2B2)
• Eurocopter EC635 T1 (2 x Arrius 2B1/2B1A)
• Eurocopter EC635 T2 (2 x Arrius 2B2)
• Eurocopter EC120B Colibri (1 x Arrius 2F)
• Agusta A109 Power (2 x Arrius 2K1/2K2)
• Kamov Ka-226T (2 x Arrius 2G1)
• Bell 505 Jet Ranger X (1 x Arrius 2R)

General characteristics

• Type: Twin-spool free-turbine turboshaft
• Length: 63 in (1601 mm)
• Diameter: 17.2 in (436 mm)
• Dry weight: 223.3 lb (101.3 kg)

Components

• Compressor: Single stage centrifugal
• Combustors: Annular reverse flow combustion chamber
• Turbine: Single stage power turbine, single stage gas generator turbine

Performance

• Maximum power output: 520 shp (388 kW)
• Turbine inlet temperature: 870 °C

Specifications (Arrius 1A)

Data from FAA Type Certificate Data Sheet.^[1]