Rotax® 912 iS (© BRP-Powertrain GmbH)
Oshkosh, Wisconsin (July, 30th, 2013) – MT Propeller and Stock Flight Systems have developed an advanced single lever control system for the Rotax 912 iS aero engine. The new system includes an MT variable pitch propeller, a hydraulic MT governor with electrical interface and the Stock Flight System Engine Management Unit (EMU 912 iS) controlling the governor.
The combination of the Rotax 912 iS engine with the MT in-flight adjustable variable pitch propeller leads to a substantial improvement in terms of thrust and fuel efficiency for 912 iS equipped airplanes, the two companies say. They have already installed the combination in a Tecnam P92 aircraft and started flight tests at an airfield in Austria. The system offers a 100% fail-safe behavior and may be installed in any Rotax 912 iS equipped airplane with minimum effort. The propeller is available as 2-blade or 3-blade, with the hub also produced by MT Propeller. According to the development team, the
system significantly increases flight safety by providing more take-off power and endurance through propeller blade pitch control.
MTV-34-1-A/175-200 Propeller (© MT Propeller GmbH)
In addition to the controlling the variable pitch propeller, the Engine Management Unit features a sophisticated instrument called Power Margin Indicator (PMI). The PMI is displayed together with engine RPM and informs the pilot in real time about the actual power output of the engine, and the maximum power the engine can deliver under the particular environmental conditions (altitude, temperature). This allows the pilot to see the available power reserve at any time, and optimize fuel consumption during cruise flight.
The development team from MT Propeller and Stock Flight Systems will present the new system at Airventure on Friday at 11:30 in Workshop Classroom 2.
See and hear the development team and learn more about the revolutionary Rotax 912 iS single lever propeller control system at Airventure:
Friday at 11:30 in Workshop Classroom 2
EMU 912iS (© Stock Flight Systems)