Researchers Look at Single-engine Cruise Ops on Twins | Aviation International News

Researchers Look at Single-engine Cruise Ops on Twins

Fuel savings of up to 30 percent expected, but automated quick restart is key.

By Thierry Dubois • Writer

February 14, 2015

Single-engine cruise flight on twin-engine helicopters, to save fuel, could be possible, according to researchers at the Technische Universität of Munich, Germany. Their work focuses on how to cope with failure of the operating engine when the other has already been shut down. Two elements are key: quick automated restart; and limiting to safe levels the rate at which the engine builds torque during that quick restart.

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