Surely all readers know that Rotax-brand engines dominate the light aircraft landscape. The company owns something like 75% or more of the global market and close to that in the USA. Some worthy competitors are keeping the pressure on, but Rotax continues forward. The engine-to-follow is their new turbo-intercooler-fuel injected 135-horsepower 915 iS variant. Rotax Aircraft Engines first announced this new model at AirVenture 2015; see our video interview for details and go to the official 915 iS page for even more. In the press conference where the engine was unveiled, many in the standing-room-only audience were airframe manufacturers. As soon as the management and engineering team was done presenting, they quickly swarmed over the powerplant. You could almost see the wheels turning in their minds as they contemplated how they could fit and use this machine in their aircraft. That was almost two years ago — AirVenture Oshkosh is only about 75 days away!
- Maximum Cruise: 280 km/h — 175 mph — 152 knots
- Eco (lower fuel consuming) Cruise: 260 km/h — 163 mph — 141 knots
- Fuel Burn in Eco mode: 23 liters/hour — 6 gallons per hour
- Fuel Translation: 27.16 statute miles per gallon at 163 mph