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).
Efficient, compact and robust, the engine has been chosen to power numerous light helicopters, in particular the H135 (Arrius 2B2Plus) and H120 (Arrius 2F) from Airbus Helicopters. The 2K2 model drives the AW109 Power developed by AgustaWestland and the 2G1 was chosen by Russian Helicopters for its Ka-226T.
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.
Early versions of the Arrius 2 entered service in 1996. The continuous integration of new technologies has enabled the engine to stay at the leading edge of progress.
Arrius engines comply with the highest market standards in terms of reliability and safety, particularly for single-engine applications.
To date, over 3,150 Arrius engines have been built by Safran Helicopter Engines. The worldwide Arrius fleet, distributed among 430 customers in 60 different countries, has accumulated more than eight million flight hours.
Certified in October 2014, the Arrius 2B2Plus is the latest in-service development of the 2B2. It powers the light twin-engine H135 developed by Airbus Helicopters. The Arrius 2B2Plus entered service in December 2014 with Italian operator Aiut Alpin Dolomites, who specializes in mountain rescue missions.
Thanks to the introduction of a Full Authority Digital Engine Control (FADEC), the engine delivers more power than the Arrius 2B2 in hot-and-high conditions. As a result, the H135's payload has been increased.
A 4,000-hour TBO (Time Between Overhaul) coupled with low fuel consumption make the 2B2Plus one of the most competitive engines in its category.