I am a little confused by the new SimVars TURB ENG THRUST EFFICIENCY LOSS, TURB ENG FUEL EFFICIENCY LOSS, and TURB ENG N1 LOSS. The SDK doesn't indicate how these are supposed to work. In the aircraft I am developing the values are always zero.
Is the intention that the developer controls the values directly? If so, how are we to write to them? I don't see any associated event IDs.
Or is the expectation the sim engine will change the values on its own. For example if I turn on engine or wing anti-ice should I see one or more of these SimVars change? For the record, I don't see any such effect.