Govenor, How does it work?

[HFG]

well if you don't compare at the same head speed, you achieve nothing because the biggest factor in power used is the headspeed.


Actually it's the load NOT the HS. Using a higher HS means you can get away with using less pitch which can mean less load. Its not as simple as saying higher HS means more load, there are many variables. As far as newbs using gov mode incorrectly you can't blame the gov for it not being setup properly. And it is very unlikely they will use the same HS anyways. Most ppl flying electric will be using a 100-90-100 type of curve and when switching to gov mode they will have to use a flat 75-80% which will mean a lower HS when hovering (minimal loading). And sport flying will really have a huge power savings, during forward flight you get the added advantage of translational lift which mean you can reduce the HS. If you change out for a higher pinion so you can get the same HS as when using a flat 100-90-100 type of curve your running a hotter setup which isnt comparing apples to apples. Your also forgetting that the gov can also go DOWN not just up. If you HS raises like for instance in a tail slide the gov will reduce the throttle. From my personal experience i can get away with a lower HS and get the same performance but longer flight times using a gov mode properly setup.

[Phoinix]

Not exactly. True, but only to some extent. Forward speed will reduce power required to only a certain indicated speed. From then on, the power demand will begin to rise again, as will the AOA.

With, "load", did you mean torque on the main rotor mast or load as mass per square unit of rotor disc? HS gets power consuming with higher RPM as the drag of rotor blades is in corelation with the power of blade vlocity. Yes, you have slightly less AOA if you have greater HS, but the drag is far more greather than.

There is only one sweet spot concerning power demand in forward speed, and it looks a little something like this:

http://i97.photobucket.com/albums/l236/BlenderPilot/Show%20and%20tell/Modeli/TLH/upor.jpg

Drag on y axis, helicopter indicated speed on x axis. The red line represents the sum of parasitic, induced and profile drag.

[HFG]

Yes its not a simple more HS means more power function. My point was that typically you can get away with using less collective pitch running a higher HS. Good example of this is in stationary flips, with a quick HS you barely need any collective to flip her on a dime.