I Ratant
Penultimate Amazing
- Joined
- Apr 8, 2008
- Messages
- 19,258
More information as to the NoC flight and its aerodynamic requirements...
The left turn before the right turn is also impossible.
And the transition from the left turn to the right turn is just not.... possible!
The bank angles and roll rates which would be needed to support those ground tracks are beyond the capability of the airplane to achieve in the time available, and the bank angles would very close to wings vertical, which was not observed, nor on the FDR data.
Getting to those angles would take many many seconds, and the transition from left to right a lot more, than the 4 seconds that are available.
100 ton airplanes are incapable of those manuvers at any time.
I've been through some "interesting" manuvers in Flight Test in the L-1011 Tristar, and even by accident nothing of the magnitudes of the manuvers that ground track requires ever occurred, and we had pilots who tried to find the limits of the airplane... and sometimes got there!
The left turn before the right turn is also impossible.
And the transition from the left turn to the right turn is just not.... possible!
The bank angles and roll rates which would be needed to support those ground tracks are beyond the capability of the airplane to achieve in the time available, and the bank angles would very close to wings vertical, which was not observed, nor on the FDR data.
Getting to those angles would take many many seconds, and the transition from left to right a lot more, than the 4 seconds that are available.
100 ton airplanes are incapable of those manuvers at any time.
I've been through some "interesting" manuvers in Flight Test in the L-1011 Tristar, and even by accident nothing of the magnitudes of the manuvers that ground track requires ever occurred, and we had pilots who tried to find the limits of the airplane... and sometimes got there!