Safran Helicopter Engines UK has signed a by-the-hour support contract with Airbus Helicopters to provide support for the engines operated by the UK Military Flying Training System (UKMFTS) programme.
The 17-year contract is valued at more than €100m, and covers Arrius 2B2Plus and Arriel 2E engines that power the new fleets of Airbus Helicopters' H135 and H145.
Safran's Arriel 2E engine features an axial compressor, a HP compressor diffuser, HP turbine blade material and a dual-channel full authority digital engine control (FADEC) linked to a modernised fuel system.
The Arriel 2E was designed to offer 20% more power than the Arriel 1E2 installed on the EC145, and offers a take-off power of 894shp, a cruising power of 828shp and a maximum power of 1072shp via the one engine inoperative (OEI) rating.
Arrius 2B2Plus is equipped with a FADEC, and is said to deliver more power than the Arrius 2B2 in hot-and-high conditions.
Arrius engines offer power ranging between 450shp and 750shp, and were developed for single and twin-engine helicopters weighing between 1.5t and 3.2t.
These engines have two main modules, including a reduction gearbox and a gas generator module, in addition to a single-stage centrifugal compressor, a single-stage turbine and a power turbine.
Safran was selected to supply Arrius and Arriel turbines for the H135 and H145 fleets in July.
The company notes that similar variants are already being used in training operations in countries including the US, Australia, France and Germany.
The H135 helicopter has been designed for basic, advanced and mission training by armed forces worldwide, while H145 is primarily intended for use by military and law enforcement agencies in transportation, special operations, intelligence, surveillance, target acquisition and reconnaissance (ISTAR), search and rescue, fire support, and medical evacuation missions.
Image: The Arrius 2B2Plus and Arriel 2E engines power the new fleets of Airbus Helicopters' H135 and H145. Photo: courtesy of Safran.