Safran Helicopter Engines (née Turbomeca) has designed a new kind of combustor for the Arrano turboshaft, thus allowing for better operability and a simpler arrangement, the engine manufacturer announced in May. Keeping the flow swirling is key, head of combustion department Claude Bérat told AIN. The 1,100- to 1,300-shp Arrano powers the in-development Airbus Helicopters H...