PPRuNe Forums - View Single Post - 4 engines, one fail. Go, no go?
View Single Post
Old 29th Oct 2008, 10:32
  #16 (permalink)  
A Comfy Chair
 
Join Date: Dec 2001
Location: Somewhere over the rainbow
Posts: 234
Likes: 0
Received 0 Likes on 0 Posts
JumboDriver,

I think you might have missed my point. These days, everyone is "go" minded, which I agree is a good thing.
I fully agree that there are risks associated with high energy stops.

If we're talking a couple of knots short of V1, then yes, you'll end up continuing because you won't have started the stopping action in time.

I am also aware, however, that if your V1 is based on your minimum engine out "Go" speed, to attempt a continued take off below that speed could be more dangerous than stopping! The point is that engine out below a minimum "go" V1 you will either not meet your screen height at the end of the runway (which is only 35ft anyway), or you won't meet the required climb gradients in the second segment. Not a situation I'd like to be taking into the air to sort out!

Topbunk, yes it flies ok on two... although on takeoff at 397 tonne I'm not sure I'd be saying that! A big catch is the 18,000 odd max performance altitude limit that causes problems with 20,000ft safety heights
A Comfy Chair is offline