Arrius engines cover a power range of between 450 and 750 shp. They are intended for single and twin-engine helicopters weighing between 1.5 and 3.2 tonnes.
The Arrius features a simple and robust design. Two main modules, a reduction gearbox and a gas generator module, facilitate maintenance operations. Depending on the variant, Time Between Overhaul (TBO) is between 3,000 and 4,000 hours.
It comprises a single-stage centrifugal compressor, a single-stage turbine and a power turbine. Earlier variants have a hydro-mechanical control system while more recent ones are equipped with Full Authority Digital Engine Control (FADEC).
In 2013, the Arrius 2R was selected to power the new Bell 505 Jet Ranger X developed by Bell Helicopter. It is the first Bell product to be powered by a Safran engine.
Certified in 2000 and 2003, the Arrius 2K1 and 2K2 power the AW109 Power helicopter developed by AgustaWestland for use by civil and military customers in medevac (EMS), rescue, law enforcement and transport missions.
The Arrius 2K1 is capable of a take-off power of 670 shp and a cruise power of 580 shp. Maximum power available via the One Engine Inoperative (OEI) rating is 750 shp.
The Arrius 2K2 powers the twin-engine AW109 LUH (Light Utility Helicopter) ordered by armed forces in South Africa, Malaysia and Sweden. The LUH is used in medevac, surveillance, rescue and troop-carrier missions.
The Arrius 2K2 is capable of a take-off power of 716 shp and a cruise power of 609 shp. Maximum power available via the emergency One Engine Inoperative (OEI) rating is 791 shp.