Hi,
the problem with numbers is, that you tend to stick to them and loose the varity of options you have.
In the military and with some operators you have to give rules to adhere to, otherwise the young pilots do all the things they shouldn´t do ;-)
Still, it all depends on the wheather and the height / temperature / weight etc.
With about 30 to 40 knots most twins are happy to fly on one engine - and you don´t have to put the nose down 20° to get there.
Big attitude changes means also big workload - and that, while you have the problems of an engine failure anyway.
With just a little nose down - and collective adjusted from transient power to emergency power (or just keeping the Nr within allowed limits), in most cases you will have good chances to get away safely without a massive height loss.
Once you have the 30 to 40 KIAS ´isch, you can then go for Vy and safe altitude and deal with the emergency.
You can try it yourself with both engines operating (most helicopters beeing TQ limited) and go in an OGEH and then reduce the collective to 1/2 emergency-power from one engine (say 140% OEI allowed - go twin 70%) and look what happens, if you stuff the nose down 20° or just about an itch.
Try the same with less power - and get a feel for the behaviour of you bird and widen the varity of options you can choose from for the case of the real emergency.
Greetings Flying Bull#
P.S. Except over the sea - where you tend to make the decision "Fly away" or "ditch" when you know your power margin, you still have the option to land over land - and there 30 to 40 KIAS is better than rushing down with 70´isch and then have to do a giant flare.
So starting gentle keeps the options open
