Originally Posted by
usmc-sgt
The reason I say pitch down for VYSE is not because you were climbing at other than VYSE it is because with the sudden loss of your engine also goes the sudden loss of your airspeed and altitude for various reasons.
I only have a few hundred hours of ME though so this is not from direct actual engine failure it is more of what I have experienced through teaching and what I have read so what I am saying is by no means gospel. I would be interested to hear other from people with more experience than I have
I agree, more than likely, you will pitch down for VYse, although, the closer you are to VYse, the less you will need to pitch down.
Let's take an example here. Vmc of 75 = Vr of about 80, assume VYse of 104. Rotate at 80, puts you climbing about 90 to 95 (~Vx) therefore you must accelerate anywhere from 9 to 14. Hold your takeoff until about 95 to 100 and you are climbing anywhere from 105 to 110 (~VYse + 5). In the event of a loss of power on one engine you will experience a degredation of airspeed and will have to pitch down to maintain VYse. However, to accelerate to VYse from 90 to 95 will require more of a down pitch than the small nose down pitch to maintain VYse with the degredation of airspeed from 105 to 100 down to 104. I believe on climbout the closer you initially are to VYse, then you are that much further from Vmc, and that is a good thing
This is by no means set in stone, it is just an example of a typical light twin. I have flown aiplanes that will not climb at or above VYse and regardless with those, it takes a large pitch down to even get to VYse in the event of an engine failure.