L2 Driver, do your comments apply to a constant circular turn (ie constant attitude, IAs etc) or a constant orbit relative to the fixed point ?
If the latter then I fully agree that power changes will be needed. But I am still struggling to see how they are needed for a constant rate turn (except the initiation of the turn).
So, going back to the first post, should we take the phrase "whilst turning down wind" to mean that a change in turn rate or similar is taking place or that the helicopter is just in a given orientation as part of a constant turn ?
In practice, if you are doing an orbit about a LZ then I assume that this will involve constant changes in power as it is not a constant rate turn unless there is no wind.