Ferry flight - single engine debate
An interesting topic came up in a discussion on ferry flights, and I would appreciate some input from all the experience out there.
Question - Why not fly on one engine at normal flight power, and the other at idle ? We are obviously talking twin engine helicopter here, ferry flight with no pax and the reason for stretching the flight is to avoid a costly dogleg to refuel en route. Cruise also at a height that would allow enough time to bring up the other engine from idle, should one have to enter autorotation from a cruise on the engine at flight power.
I expect the saving in range might not be all that much, but could be just sufficient to make the difference.
It would be interesting to see what figures drivers out there might come up with, hopefully from personal experience.
Keep the revs up fellows, the moon is yellow tonight.