Having read all of the above posts-- I really did not see any comments addressing a question I have.
" If the given model hovers and holds stationary--then the amount of energy being used to hold and hover is the same "
Right?
If the engine rpm is changed -yet the hover is still the same -- the energy required is still the same.
Right?
If the rpm remains the same - on different type props -what is going on?
Looks like prop efficiency has a huge roll here -
"torque " applied by the engine - does not look to be relevant.
So - we have a "constant" of the net power required to hold altitude - regardless of torque or rpm involved.
The variables left are :
A rolling hover -or a stationary hover -- which requires more energy to accomplish?
The obvious answer would be the rolling hover - --as it took some energy from somewhere - to start an additional motion.
Here is what I thingk ( not certain) is happening.
To roll and hover -- the prop must "slip " more -- that is absorb more power -yet not add more lifting force.
More blade angle -yet less thrust is required. ( for hover AND roll)
The heli setups demonstrate this the best - in my book.
Did I get it right?