Take-off from ground Helipad
The profile I refer to is described as "Take-off fom ground helipad", which I assume is not a confined area or one having 75m or so ahead. Indeed neither of these features are mentioned in the description of the profile.
Judging by other performance parameters for the 155, the weights per profile are pushed to the limits, so much so that use of electronics seems to be the only way to guarantee required climb rates. Therefore I assume again, single engine performance will not be great and a reasonably buttock clenching rate of descent will ensue.
I am looking for the benefits of this profile over an up and back, are there any?
Regardless of single engine performance surely forward motion can only help power margins with translational lift! Most of all though references in front of me are far more comforting than those barely if at all visible below.